diff --git a/package.json b/package.json
index 38f29b01..a2f0bde9 100644
--- a/package.json
+++ b/package.json
@@ -27,9 +27,10 @@
   },
   "devDependencies": {
     "@babel/preset-typescript": "^7.23.3",
-    "@truffle/hdwallet-provider": "^2.1.11",
+    "@truffle/hdwallet-provider": "^2.1.15",
     "@types/chai": "^4.3.0",
     "@types/crypto-js": "^4.0.2",
+    "@types/ethereumjs-abi": "^0.6.5",
     "@types/jest": "^29.5.12",
     "@types/mime-types": "^2.1.4",
     "@types/mocha": "^9.1.0",
@@ -61,6 +62,7 @@
     "axios": "^0.27.2",
     "crypto": "^1.0.1",
     "crypto-js": "^4.1.1",
+    "ethereumjs-abi": "^0.6.8",
     "ethers": "5.7.2",
     "fetch-blob": "^4.0.0",
     "form-data": "^4.0.0",
diff --git a/src/contract/VWBLERC6150ERC2981.json b/src/contract/VWBLERC6150ERC2981.json
new file mode 100644
index 00000000..da9c305b
--- /dev/null
+++ b/src/contract/VWBLERC6150ERC2981.json
@@ -0,0 +1,1161 @@
+{
+    "_format": "hh-sol-artifact-1",
+    "contractName": "VWBLERC6150ERC2981",
+    "sourceName": "contracts/access-condition/ERC6150/VWBLERC6150ERC2981.sol",
+    "abi": [
+      {
+        "inputs": [
+          {
+            "internalType": "string",
+            "name": "_baseURI",
+            "type": "string"
+          },
+          {
+            "internalType": "address",
+            "name": "_gatewayProxy",
+            "type": "address"
+          },
+          {
+            "internalType": "address",
+            "name": "_accessCheckerContract",
+            "type": "address"
+          },
+          {
+            "internalType": "string",
+            "name": "_signMessage",
+            "type": "string"
+          }
+        ],
+        "stateMutability": "nonpayable",
+        "type": "constructor"
+      },
+      {
+        "anonymous": false,
+        "inputs": [
+          {
+            "indexed": false,
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          },
+          {
+            "indexed": false,
+            "internalType": "address",
+            "name": "grantee",
+            "type": "address"
+          }
+        ],
+        "name": "AncestorPermissionGranted",
+        "type": "event"
+      },
+      {
+        "anonymous": false,
+        "inputs": [
+          {
+            "indexed": false,
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          },
+          {
+            "indexed": false,
+            "internalType": "address",
+            "name": "revoker",
+            "type": "address"
+          }
+        ],
+        "name": "AncestorPermissionRevoked",
+        "type": "event"
+      },
+      {
+        "anonymous": false,
+        "inputs": [
+          {
+            "indexed": true,
+            "internalType": "address",
+            "name": "owner",
+            "type": "address"
+          },
+          {
+            "indexed": true,
+            "internalType": "address",
+            "name": "approved",
+            "type": "address"
+          },
+          {
+            "indexed": true,
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          }
+        ],
+        "name": "Approval",
+        "type": "event"
+      },
+      {
+        "anonymous": false,
+        "inputs": [
+          {
+            "indexed": true,
+            "internalType": "address",
+            "name": "owner",
+            "type": "address"
+          },
+          {
+            "indexed": true,
+            "internalType": "address",
+            "name": "operator",
+            "type": "address"
+          },
+          {
+            "indexed": false,
+            "internalType": "bool",
+            "name": "approved",
+            "type": "bool"
+          }
+        ],
+        "name": "ApprovalForAll",
+        "type": "event"
+      },
+      {
+        "anonymous": false,
+        "inputs": [
+          {
+            "indexed": true,
+            "internalType": "address",
+            "name": "minter",
+            "type": "address"
+          },
+          {
+            "indexed": true,
+            "internalType": "address",
+            "name": "to",
+            "type": "address"
+          },
+          {
+            "indexed": false,
+            "internalType": "uint256",
+            "name": "parentId",
+            "type": "uint256"
+          },
+          {
+            "indexed": false,
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          }
+        ],
+        "name": "Minted",
+        "type": "event"
+      },
+      {
+        "anonymous": false,
+        "inputs": [
+          {
+            "indexed": true,
+            "internalType": "address",
+            "name": "previousOwner",
+            "type": "address"
+          },
+          {
+            "indexed": true,
+            "internalType": "address",
+            "name": "newOwner",
+            "type": "address"
+          }
+        ],
+        "name": "OwnershipTransferred",
+        "type": "event"
+      },
+      {
+        "anonymous": false,
+        "inputs": [
+          {
+            "indexed": false,
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          },
+          {
+            "indexed": false,
+            "internalType": "uint256",
+            "name": "oldParentId",
+            "type": "uint256"
+          },
+          {
+            "indexed": false,
+            "internalType": "uint256",
+            "name": "newParentId",
+            "type": "uint256"
+          }
+        ],
+        "name": "ParentTransferred",
+        "type": "event"
+      },
+      {
+        "anonymous": false,
+        "inputs": [
+          {
+            "indexed": true,
+            "internalType": "address",
+            "name": "from",
+            "type": "address"
+          },
+          {
+            "indexed": true,
+            "internalType": "address",
+            "name": "to",
+            "type": "address"
+          },
+          {
+            "indexed": true,
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          }
+        ],
+        "name": "Transfer",
+        "type": "event"
+      },
+      {
+        "anonymous": false,
+        "inputs": [
+          {
+            "indexed": false,
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          },
+          {
+            "indexed": false,
+            "internalType": "address",
+            "name": "grantee",
+            "type": "address"
+          }
+        ],
+        "name": "ViewPermissionGranted",
+        "type": "event"
+      },
+      {
+        "anonymous": false,
+        "inputs": [
+          {
+            "indexed": false,
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          },
+          {
+            "indexed": false,
+            "internalType": "address",
+            "name": "revoker",
+            "type": "address"
+          }
+        ],
+        "name": "ViewPermissionRevoked",
+        "type": "event"
+      },
+      {
+        "anonymous": false,
+        "inputs": [
+          {
+            "indexed": false,
+            "internalType": "address",
+            "name": "oldAccessCheckerContract",
+            "type": "address"
+          },
+          {
+            "indexed": false,
+            "internalType": "address",
+            "name": "newAccessCheckerContract",
+            "type": "address"
+          }
+        ],
+        "name": "accessCheckerContractChanged",
+        "type": "event"
+      },
+      {
+        "inputs": [],
+        "name": "accessCheckerContract",
+        "outputs": [
+          {
+            "internalType": "address",
+            "name": "",
+            "type": "address"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "address",
+            "name": "to",
+            "type": "address"
+          },
+          {
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          }
+        ],
+        "name": "approve",
+        "outputs": [],
+        "stateMutability": "nonpayable",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "address",
+            "name": "owner",
+            "type": "address"
+          }
+        ],
+        "name": "balanceOf",
+        "outputs": [
+          {
+            "internalType": "uint256",
+            "name": "",
+            "type": "uint256"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [],
+        "name": "baseURI",
+        "outputs": [
+          {
+            "internalType": "string",
+            "name": "",
+            "type": "string"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "newParentId",
+            "type": "uint256"
+          },
+          {
+            "internalType": "uint256[]",
+            "name": "tokenIds",
+            "type": "uint256[]"
+          }
+        ],
+        "name": "batchTransferParent",
+        "outputs": [],
+        "stateMutability": "nonpayable",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          },
+          {
+            "internalType": "address",
+            "name": "user",
+            "type": "address"
+          }
+        ],
+        "name": "checkDirPermission",
+        "outputs": [
+          {
+            "internalType": "bool",
+            "name": "",
+            "type": "bool"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          },
+          {
+            "internalType": "address",
+            "name": "user",
+            "type": "address"
+          }
+        ],
+        "name": "checkViewPermission",
+        "outputs": [
+          {
+            "internalType": "bool",
+            "name": "",
+            "type": "bool"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          }
+        ],
+        "name": "childrenOf",
+        "outputs": [
+          {
+            "internalType": "uint256[]",
+            "name": "childrenIds",
+            "type": "uint256[]"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [],
+        "name": "counter",
+        "outputs": [
+          {
+            "internalType": "uint256",
+            "name": "",
+            "type": "uint256"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [],
+        "name": "gatewayProxy",
+        "outputs": [
+          {
+            "internalType": "address",
+            "name": "",
+            "type": "address"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [],
+        "name": "getAllowOrigins",
+        "outputs": [
+          {
+            "internalType": "string",
+            "name": "",
+            "type": "string"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          }
+        ],
+        "name": "getApproved",
+        "outputs": [
+          {
+            "internalType": "address",
+            "name": "",
+            "type": "address"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [],
+        "name": "getFee",
+        "outputs": [
+          {
+            "internalType": "uint256",
+            "name": "",
+            "type": "uint256"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [],
+        "name": "getGatewayAddress",
+        "outputs": [
+          {
+            "internalType": "address",
+            "name": "",
+            "type": "address"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          }
+        ],
+        "name": "getMinter",
+        "outputs": [
+          {
+            "internalType": "address",
+            "name": "",
+            "type": "address"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [],
+        "name": "getSignMessage",
+        "outputs": [
+          {
+            "internalType": "string",
+            "name": "",
+            "type": "string"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "address",
+            "name": "minter",
+            "type": "address"
+          }
+        ],
+        "name": "getTokenByMinter",
+        "outputs": [
+          {
+            "internalType": "uint256[]",
+            "name": "",
+            "type": "uint256[]"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          },
+          {
+            "internalType": "address",
+            "name": "grantee",
+            "type": "address"
+          },
+          {
+            "internalType": "bool",
+            "name": "toDir",
+            "type": "bool"
+          }
+        ],
+        "name": "grantViewPermission",
+        "outputs": [
+          {
+            "internalType": "uint256",
+            "name": "",
+            "type": "uint256"
+          }
+        ],
+        "stateMutability": "nonpayable",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          },
+          {
+            "internalType": "address",
+            "name": "grantee",
+            "type": "address"
+          }
+        ],
+        "name": "grantViewPermissionToDir",
+        "outputs": [
+          {
+            "internalType": "uint256",
+            "name": "",
+            "type": "uint256"
+          }
+        ],
+        "stateMutability": "nonpayable",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "",
+            "type": "uint256"
+          },
+          {
+            "internalType": "address",
+            "name": "",
+            "type": "address"
+          }
+        ],
+        "name": "hasDirPermission",
+        "outputs": [
+          {
+            "internalType": "bool",
+            "name": "",
+            "type": "bool"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "",
+            "type": "uint256"
+          },
+          {
+            "internalType": "address",
+            "name": "",
+            "type": "address"
+          }
+        ],
+        "name": "hasViewPermission",
+        "outputs": [
+          {
+            "internalType": "bool",
+            "name": "",
+            "type": "bool"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "address",
+            "name": "owner",
+            "type": "address"
+          },
+          {
+            "internalType": "address",
+            "name": "operator",
+            "type": "address"
+          }
+        ],
+        "name": "isApprovedForAll",
+        "outputs": [
+          {
+            "internalType": "bool",
+            "name": "",
+            "type": "bool"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          }
+        ],
+        "name": "isLeaf",
+        "outputs": [
+          {
+            "internalType": "bool",
+            "name": "",
+            "type": "bool"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          }
+        ],
+        "name": "isRoot",
+        "outputs": [
+          {
+            "internalType": "bool",
+            "name": "",
+            "type": "bool"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "string",
+            "name": "_getKeyURl",
+            "type": "string"
+          },
+          {
+            "internalType": "uint256",
+            "name": "_parentId",
+            "type": "uint256"
+          },
+          {
+            "internalType": "uint96",
+            "name": "_feeNumerator",
+            "type": "uint96"
+          },
+          {
+            "internalType": "bytes32",
+            "name": "_documentId",
+            "type": "bytes32"
+          }
+        ],
+        "name": "mint",
+        "outputs": [
+          {
+            "internalType": "uint256",
+            "name": "",
+            "type": "uint256"
+          }
+        ],
+        "stateMutability": "payable",
+        "type": "function"
+      },
+      {
+        "inputs": [],
+        "name": "name",
+        "outputs": [
+          {
+            "internalType": "string",
+            "name": "",
+            "type": "string"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [],
+        "name": "owner",
+        "outputs": [
+          {
+            "internalType": "address",
+            "name": "",
+            "type": "address"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          }
+        ],
+        "name": "ownerOf",
+        "outputs": [
+          {
+            "internalType": "address",
+            "name": "",
+            "type": "address"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          }
+        ],
+        "name": "parentOf",
+        "outputs": [
+          {
+            "internalType": "uint256",
+            "name": "parentId",
+            "type": "uint256"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [],
+        "name": "renounceOwnership",
+        "outputs": [],
+        "stateMutability": "nonpayable",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          },
+          {
+            "internalType": "address",
+            "name": "revoker",
+            "type": "address"
+          }
+        ],
+        "name": "revokeDirPermission",
+        "outputs": [
+          {
+            "internalType": "uint256",
+            "name": "",
+            "type": "uint256"
+          }
+        ],
+        "stateMutability": "nonpayable",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          },
+          {
+            "internalType": "address",
+            "name": "revoker",
+            "type": "address"
+          }
+        ],
+        "name": "revokeViewPermission",
+        "outputs": [
+          {
+            "internalType": "uint256",
+            "name": "",
+            "type": "uint256"
+          }
+        ],
+        "stateMutability": "nonpayable",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "_tokenId",
+            "type": "uint256"
+          },
+          {
+            "internalType": "uint256",
+            "name": "_salePrice",
+            "type": "uint256"
+          }
+        ],
+        "name": "royaltyInfo",
+        "outputs": [
+          {
+            "internalType": "address",
+            "name": "",
+            "type": "address"
+          },
+          {
+            "internalType": "uint256",
+            "name": "",
+            "type": "uint256"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "address",
+            "name": "from",
+            "type": "address"
+          },
+          {
+            "internalType": "address",
+            "name": "to",
+            "type": "address"
+          },
+          {
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          }
+        ],
+        "name": "safeTransferFrom",
+        "outputs": [],
+        "stateMutability": "nonpayable",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "address",
+            "name": "from",
+            "type": "address"
+          },
+          {
+            "internalType": "address",
+            "name": "to",
+            "type": "address"
+          },
+          {
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          },
+          {
+            "internalType": "bytes",
+            "name": "data",
+            "type": "bytes"
+          }
+        ],
+        "name": "safeTransferFrom",
+        "outputs": [],
+        "stateMutability": "nonpayable",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "address",
+            "name": "newAccessCheckerContract",
+            "type": "address"
+          }
+        ],
+        "name": "setAccessCheckerContract",
+        "outputs": [],
+        "stateMutability": "nonpayable",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "string",
+            "name": "_origins",
+            "type": "string"
+          }
+        ],
+        "name": "setAllowOrigins",
+        "outputs": [],
+        "stateMutability": "nonpayable",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "address",
+            "name": "operator",
+            "type": "address"
+          },
+          {
+            "internalType": "bool",
+            "name": "approved",
+            "type": "bool"
+          }
+        ],
+        "name": "setApprovalForAll",
+        "outputs": [],
+        "stateMutability": "nonpayable",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "string",
+            "name": "_baseURI",
+            "type": "string"
+          }
+        ],
+        "name": "setBaseURI",
+        "outputs": [],
+        "stateMutability": "nonpayable",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "string",
+            "name": "_signMessage",
+            "type": "string"
+          }
+        ],
+        "name": "setSignMessage",
+        "outputs": [],
+        "stateMutability": "nonpayable",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "bytes4",
+            "name": "interfaceId",
+            "type": "bytes4"
+          }
+        ],
+        "name": "supportsInterface",
+        "outputs": [
+          {
+            "internalType": "bool",
+            "name": "",
+            "type": "bool"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [],
+        "name": "symbol",
+        "outputs": [
+          {
+            "internalType": "string",
+            "name": "",
+            "type": "string"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "",
+            "type": "uint256"
+          }
+        ],
+        "name": "tokenIdToTokenInfo",
+        "outputs": [
+          {
+            "internalType": "bytes32",
+            "name": "documentId",
+            "type": "bytes32"
+          },
+          {
+            "internalType": "address",
+            "name": "minterAddress",
+            "type": "address"
+          },
+          {
+            "internalType": "string",
+            "name": "getKeyURl",
+            "type": "string"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          }
+        ],
+        "name": "tokenURI",
+        "outputs": [
+          {
+            "internalType": "string",
+            "name": "",
+            "type": "string"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "address",
+            "name": "from",
+            "type": "address"
+          },
+          {
+            "internalType": "address",
+            "name": "to",
+            "type": "address"
+          },
+          {
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          }
+        ],
+        "name": "transferFrom",
+        "outputs": [],
+        "stateMutability": "nonpayable",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "address",
+            "name": "newOwner",
+            "type": "address"
+          }
+        ],
+        "name": "transferOwnership",
+        "outputs": [],
+        "stateMutability": "nonpayable",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "newParentId",
+            "type": "uint256"
+          },
+          {
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          }
+        ],
+        "name": "transferParent",
+        "outputs": [],
+        "stateMutability": "nonpayable",
+        "type": "function"
+      }
+    ]
+}
\ No newline at end of file
diff --git a/src/contract/VWBLERC6150ERC2981ForMetadata.json b/src/contract/VWBLERC6150ERC2981ForMetadata.json
new file mode 100644
index 00000000..107e6b6f
--- /dev/null
+++ b/src/contract/VWBLERC6150ERC2981ForMetadata.json
@@ -0,0 +1,1161 @@
+{
+    "_format": "hh-sol-artifact-1",
+    "contractName": "VWBLERC6150ERC2981ForMetadata",
+    "sourceName": "contracts/access-condition/ERC6150/extensions/VWBLERC6150ERC2981ForMetadata.sol",
+    "abi": [
+      {
+        "inputs": [
+          {
+            "internalType": "address",
+            "name": "_gatewayProxy",
+            "type": "address"
+          },
+          {
+            "internalType": "address",
+            "name": "_accessCheckerContract",
+            "type": "address"
+          },
+          {
+            "internalType": "string",
+            "name": "_signMessage",
+            "type": "string"
+          }
+        ],
+        "stateMutability": "nonpayable",
+        "type": "constructor"
+      },
+      {
+        "anonymous": false,
+        "inputs": [
+          {
+            "indexed": false,
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          },
+          {
+            "indexed": false,
+            "internalType": "address",
+            "name": "grantee",
+            "type": "address"
+          }
+        ],
+        "name": "AncestorPermissionGranted",
+        "type": "event"
+      },
+      {
+        "anonymous": false,
+        "inputs": [
+          {
+            "indexed": false,
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          },
+          {
+            "indexed": false,
+            "internalType": "address",
+            "name": "revoker",
+            "type": "address"
+          }
+        ],
+        "name": "AncestorPermissionRevoked",
+        "type": "event"
+      },
+      {
+        "anonymous": false,
+        "inputs": [
+          {
+            "indexed": true,
+            "internalType": "address",
+            "name": "owner",
+            "type": "address"
+          },
+          {
+            "indexed": true,
+            "internalType": "address",
+            "name": "approved",
+            "type": "address"
+          },
+          {
+            "indexed": true,
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          }
+        ],
+        "name": "Approval",
+        "type": "event"
+      },
+      {
+        "anonymous": false,
+        "inputs": [
+          {
+            "indexed": true,
+            "internalType": "address",
+            "name": "owner",
+            "type": "address"
+          },
+          {
+            "indexed": true,
+            "internalType": "address",
+            "name": "operator",
+            "type": "address"
+          },
+          {
+            "indexed": false,
+            "internalType": "bool",
+            "name": "approved",
+            "type": "bool"
+          }
+        ],
+        "name": "ApprovalForAll",
+        "type": "event"
+      },
+      {
+        "anonymous": false,
+        "inputs": [
+          {
+            "indexed": true,
+            "internalType": "address",
+            "name": "minter",
+            "type": "address"
+          },
+          {
+            "indexed": true,
+            "internalType": "address",
+            "name": "to",
+            "type": "address"
+          },
+          {
+            "indexed": false,
+            "internalType": "uint256",
+            "name": "parentId",
+            "type": "uint256"
+          },
+          {
+            "indexed": false,
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          }
+        ],
+        "name": "Minted",
+        "type": "event"
+      },
+      {
+        "anonymous": false,
+        "inputs": [
+          {
+            "indexed": true,
+            "internalType": "address",
+            "name": "previousOwner",
+            "type": "address"
+          },
+          {
+            "indexed": true,
+            "internalType": "address",
+            "name": "newOwner",
+            "type": "address"
+          }
+        ],
+        "name": "OwnershipTransferred",
+        "type": "event"
+      },
+      {
+        "anonymous": false,
+        "inputs": [
+          {
+            "indexed": false,
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          },
+          {
+            "indexed": false,
+            "internalType": "uint256",
+            "name": "oldParentId",
+            "type": "uint256"
+          },
+          {
+            "indexed": false,
+            "internalType": "uint256",
+            "name": "newParentId",
+            "type": "uint256"
+          }
+        ],
+        "name": "ParentTransferred",
+        "type": "event"
+      },
+      {
+        "anonymous": false,
+        "inputs": [
+          {
+            "indexed": true,
+            "internalType": "address",
+            "name": "from",
+            "type": "address"
+          },
+          {
+            "indexed": true,
+            "internalType": "address",
+            "name": "to",
+            "type": "address"
+          },
+          {
+            "indexed": true,
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          }
+        ],
+        "name": "Transfer",
+        "type": "event"
+      },
+      {
+        "anonymous": false,
+        "inputs": [
+          {
+            "indexed": false,
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          },
+          {
+            "indexed": false,
+            "internalType": "address",
+            "name": "grantee",
+            "type": "address"
+          }
+        ],
+        "name": "ViewPermissionGranted",
+        "type": "event"
+      },
+      {
+        "anonymous": false,
+        "inputs": [
+          {
+            "indexed": false,
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          },
+          {
+            "indexed": false,
+            "internalType": "address",
+            "name": "revoker",
+            "type": "address"
+          }
+        ],
+        "name": "ViewPermissionRevoked",
+        "type": "event"
+      },
+      {
+        "anonymous": false,
+        "inputs": [
+          {
+            "indexed": false,
+            "internalType": "address",
+            "name": "oldAccessCheckerContract",
+            "type": "address"
+          },
+          {
+            "indexed": false,
+            "internalType": "address",
+            "name": "newAccessCheckerContract",
+            "type": "address"
+          }
+        ],
+        "name": "accessCheckerContractChanged",
+        "type": "event"
+      },
+      {
+        "inputs": [],
+        "name": "accessCheckerContract",
+        "outputs": [
+          {
+            "internalType": "address",
+            "name": "",
+            "type": "address"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "address",
+            "name": "to",
+            "type": "address"
+          },
+          {
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          }
+        ],
+        "name": "approve",
+        "outputs": [],
+        "stateMutability": "nonpayable",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "address",
+            "name": "owner",
+            "type": "address"
+          }
+        ],
+        "name": "balanceOf",
+        "outputs": [
+          {
+            "internalType": "uint256",
+            "name": "",
+            "type": "uint256"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [],
+        "name": "baseURI",
+        "outputs": [
+          {
+            "internalType": "string",
+            "name": "",
+            "type": "string"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "newParentId",
+            "type": "uint256"
+          },
+          {
+            "internalType": "uint256[]",
+            "name": "tokenIds",
+            "type": "uint256[]"
+          }
+        ],
+        "name": "batchTransferParent",
+        "outputs": [],
+        "stateMutability": "nonpayable",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          },
+          {
+            "internalType": "address",
+            "name": "user",
+            "type": "address"
+          }
+        ],
+        "name": "checkDirPermission",
+        "outputs": [
+          {
+            "internalType": "bool",
+            "name": "",
+            "type": "bool"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          },
+          {
+            "internalType": "address",
+            "name": "user",
+            "type": "address"
+          }
+        ],
+        "name": "checkViewPermission",
+        "outputs": [
+          {
+            "internalType": "bool",
+            "name": "",
+            "type": "bool"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          }
+        ],
+        "name": "childrenOf",
+        "outputs": [
+          {
+            "internalType": "uint256[]",
+            "name": "childrenIds",
+            "type": "uint256[]"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [],
+        "name": "counter",
+        "outputs": [
+          {
+            "internalType": "uint256",
+            "name": "",
+            "type": "uint256"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [],
+        "name": "gatewayProxy",
+        "outputs": [
+          {
+            "internalType": "address",
+            "name": "",
+            "type": "address"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [],
+        "name": "getAllowOrigins",
+        "outputs": [
+          {
+            "internalType": "string",
+            "name": "",
+            "type": "string"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          }
+        ],
+        "name": "getApproved",
+        "outputs": [
+          {
+            "internalType": "address",
+            "name": "",
+            "type": "address"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [],
+        "name": "getFee",
+        "outputs": [
+          {
+            "internalType": "uint256",
+            "name": "",
+            "type": "uint256"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [],
+        "name": "getGatewayAddress",
+        "outputs": [
+          {
+            "internalType": "address",
+            "name": "",
+            "type": "address"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          }
+        ],
+        "name": "getMinter",
+        "outputs": [
+          {
+            "internalType": "address",
+            "name": "",
+            "type": "address"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [],
+        "name": "getSignMessage",
+        "outputs": [
+          {
+            "internalType": "string",
+            "name": "",
+            "type": "string"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "address",
+            "name": "minter",
+            "type": "address"
+          }
+        ],
+        "name": "getTokenByMinter",
+        "outputs": [
+          {
+            "internalType": "uint256[]",
+            "name": "",
+            "type": "uint256[]"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          },
+          {
+            "internalType": "address",
+            "name": "grantee",
+            "type": "address"
+          },
+          {
+            "internalType": "bool",
+            "name": "toDir",
+            "type": "bool"
+          }
+        ],
+        "name": "grantViewPermission",
+        "outputs": [
+          {
+            "internalType": "uint256",
+            "name": "",
+            "type": "uint256"
+          }
+        ],
+        "stateMutability": "nonpayable",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          },
+          {
+            "internalType": "address",
+            "name": "grantee",
+            "type": "address"
+          }
+        ],
+        "name": "grantViewPermissionToDir",
+        "outputs": [
+          {
+            "internalType": "uint256",
+            "name": "",
+            "type": "uint256"
+          }
+        ],
+        "stateMutability": "nonpayable",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "",
+            "type": "uint256"
+          },
+          {
+            "internalType": "address",
+            "name": "",
+            "type": "address"
+          }
+        ],
+        "name": "hasDirPermission",
+        "outputs": [
+          {
+            "internalType": "bool",
+            "name": "",
+            "type": "bool"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "",
+            "type": "uint256"
+          },
+          {
+            "internalType": "address",
+            "name": "",
+            "type": "address"
+          }
+        ],
+        "name": "hasViewPermission",
+        "outputs": [
+          {
+            "internalType": "bool",
+            "name": "",
+            "type": "bool"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "address",
+            "name": "owner",
+            "type": "address"
+          },
+          {
+            "internalType": "address",
+            "name": "operator",
+            "type": "address"
+          }
+        ],
+        "name": "isApprovedForAll",
+        "outputs": [
+          {
+            "internalType": "bool",
+            "name": "",
+            "type": "bool"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          }
+        ],
+        "name": "isLeaf",
+        "outputs": [
+          {
+            "internalType": "bool",
+            "name": "",
+            "type": "bool"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          }
+        ],
+        "name": "isRoot",
+        "outputs": [
+          {
+            "internalType": "bool",
+            "name": "",
+            "type": "bool"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "string",
+            "name": "_metadataURL",
+            "type": "string"
+          },
+          {
+            "internalType": "string",
+            "name": "_getKeyURl",
+            "type": "string"
+          },
+          {
+            "internalType": "uint256",
+            "name": "_parentId",
+            "type": "uint256"
+          },
+          {
+            "internalType": "uint96",
+            "name": "_feeNumerator",
+            "type": "uint96"
+          },
+          {
+            "internalType": "bytes32",
+            "name": "_documentId",
+            "type": "bytes32"
+          }
+        ],
+        "name": "mint",
+        "outputs": [
+          {
+            "internalType": "uint256",
+            "name": "",
+            "type": "uint256"
+          }
+        ],
+        "stateMutability": "payable",
+        "type": "function"
+      },
+      {
+        "inputs": [],
+        "name": "name",
+        "outputs": [
+          {
+            "internalType": "string",
+            "name": "",
+            "type": "string"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [],
+        "name": "owner",
+        "outputs": [
+          {
+            "internalType": "address",
+            "name": "",
+            "type": "address"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          }
+        ],
+        "name": "ownerOf",
+        "outputs": [
+          {
+            "internalType": "address",
+            "name": "",
+            "type": "address"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          }
+        ],
+        "name": "parentOf",
+        "outputs": [
+          {
+            "internalType": "uint256",
+            "name": "parentId",
+            "type": "uint256"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [],
+        "name": "renounceOwnership",
+        "outputs": [],
+        "stateMutability": "nonpayable",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          },
+          {
+            "internalType": "address",
+            "name": "revoker",
+            "type": "address"
+          }
+        ],
+        "name": "revokeDirPermission",
+        "outputs": [
+          {
+            "internalType": "uint256",
+            "name": "",
+            "type": "uint256"
+          }
+        ],
+        "stateMutability": "nonpayable",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          },
+          {
+            "internalType": "address",
+            "name": "revoker",
+            "type": "address"
+          }
+        ],
+        "name": "revokeViewPermission",
+        "outputs": [
+          {
+            "internalType": "uint256",
+            "name": "",
+            "type": "uint256"
+          }
+        ],
+        "stateMutability": "nonpayable",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "_tokenId",
+            "type": "uint256"
+          },
+          {
+            "internalType": "uint256",
+            "name": "_salePrice",
+            "type": "uint256"
+          }
+        ],
+        "name": "royaltyInfo",
+        "outputs": [
+          {
+            "internalType": "address",
+            "name": "",
+            "type": "address"
+          },
+          {
+            "internalType": "uint256",
+            "name": "",
+            "type": "uint256"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "address",
+            "name": "from",
+            "type": "address"
+          },
+          {
+            "internalType": "address",
+            "name": "to",
+            "type": "address"
+          },
+          {
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          }
+        ],
+        "name": "safeTransferFrom",
+        "outputs": [],
+        "stateMutability": "nonpayable",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "address",
+            "name": "from",
+            "type": "address"
+          },
+          {
+            "internalType": "address",
+            "name": "to",
+            "type": "address"
+          },
+          {
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          },
+          {
+            "internalType": "bytes",
+            "name": "data",
+            "type": "bytes"
+          }
+        ],
+        "name": "safeTransferFrom",
+        "outputs": [],
+        "stateMutability": "nonpayable",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "address",
+            "name": "newAccessCheckerContract",
+            "type": "address"
+          }
+        ],
+        "name": "setAccessCheckerContract",
+        "outputs": [],
+        "stateMutability": "nonpayable",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "string",
+            "name": "_origins",
+            "type": "string"
+          }
+        ],
+        "name": "setAllowOrigins",
+        "outputs": [],
+        "stateMutability": "nonpayable",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "address",
+            "name": "operator",
+            "type": "address"
+          },
+          {
+            "internalType": "bool",
+            "name": "approved",
+            "type": "bool"
+          }
+        ],
+        "name": "setApprovalForAll",
+        "outputs": [],
+        "stateMutability": "nonpayable",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "string",
+            "name": "_baseURI",
+            "type": "string"
+          }
+        ],
+        "name": "setBaseURI",
+        "outputs": [],
+        "stateMutability": "nonpayable",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "string",
+            "name": "_signMessage",
+            "type": "string"
+          }
+        ],
+        "name": "setSignMessage",
+        "outputs": [],
+        "stateMutability": "nonpayable",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "bytes4",
+            "name": "interfaceId",
+            "type": "bytes4"
+          }
+        ],
+        "name": "supportsInterface",
+        "outputs": [
+          {
+            "internalType": "bool",
+            "name": "",
+            "type": "bool"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [],
+        "name": "symbol",
+        "outputs": [
+          {
+            "internalType": "string",
+            "name": "",
+            "type": "string"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "",
+            "type": "uint256"
+          }
+        ],
+        "name": "tokenIdToTokenInfo",
+        "outputs": [
+          {
+            "internalType": "bytes32",
+            "name": "documentId",
+            "type": "bytes32"
+          },
+          {
+            "internalType": "address",
+            "name": "minterAddress",
+            "type": "address"
+          },
+          {
+            "internalType": "string",
+            "name": "getKeyURl",
+            "type": "string"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          }
+        ],
+        "name": "tokenURI",
+        "outputs": [
+          {
+            "internalType": "string",
+            "name": "",
+            "type": "string"
+          }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "address",
+            "name": "from",
+            "type": "address"
+          },
+          {
+            "internalType": "address",
+            "name": "to",
+            "type": "address"
+          },
+          {
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          }
+        ],
+        "name": "transferFrom",
+        "outputs": [],
+        "stateMutability": "nonpayable",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "address",
+            "name": "newOwner",
+            "type": "address"
+          }
+        ],
+        "name": "transferOwnership",
+        "outputs": [],
+        "stateMutability": "nonpayable",
+        "type": "function"
+      },
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "newParentId",
+            "type": "uint256"
+          },
+          {
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          }
+        ],
+        "name": "transferParent",
+        "outputs": [],
+        "stateMutability": "nonpayable",
+        "type": "function"
+      }
+    ]
+}
\ No newline at end of file
diff --git a/src/contract/VWBLERC721ERC2981.json b/src/contract/VWBLERC721ERC2981.json
index 8f3573b8..f06f64e4 100644
--- a/src/contract/VWBLERC721ERC2981.json
+++ b/src/contract/VWBLERC721ERC2981.json
@@ -3,6 +3,30 @@
   "contractName": "VWBLERC721ERC2981",
   "sourceName": "contracts/access-condition/ERC721/VWBLERC721ERC2981.sol",
   "abi": [
+    {
+      "inputs": [
+        {
+          "internalType": "uint256",
+          "name": "tokenId",
+          "type": "uint256"
+        },
+        {
+          "internalType": "address",
+          "name": "revoker",
+          "type": "address"
+        }
+      ],
+      "name": "revokeViewPermission",
+      "outputs": [
+        {
+          "internalType": "uint256",
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
     {
       "inputs": [
         {
@@ -766,6 +790,54 @@
       "outputs": [],
       "stateMutability": "nonpayable",
       "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "uint256",
+          "name": "tokenId",
+          "type": "uint256"
+        },
+        {
+          "internalType": "address",
+          "name": "grantee",
+          "type": "address"
+        }
+      ],
+      "name": "grantViewPermission",
+      "outputs": [
+        {
+          "internalType": "uint256",
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "uint256",
+          "name": "tokenId",
+          "type": "uint256"
+        },
+        {
+          "internalType": "address",
+          "name": "user",
+          "type": "address"
+        }
+      ],
+      "name": "checkViewPermission",
+      "outputs": [
+        {
+          "internalType": "bool",
+          "name": "",
+          "type": "bool"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
     }
   ],
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diff --git a/src/contract/VWBLERC721ERC2981ForMetadata.json b/src/contract/VWBLERC721ERC2981ForMetadata.json
index 38a90e29..291c3366 100644
--- a/src/contract/VWBLERC721ERC2981ForMetadata.json
+++ b/src/contract/VWBLERC721ERC2981ForMetadata.json
@@ -3,6 +3,30 @@
   "contractName": "VWBLERC721ERC2981ForMetadata",
   "sourceName": "contracts/access-condition/ERC721/extensions/VWBLERC721ERC2981ForMetadata.sol",
   "abi": [
+    {
+      "inputs": [
+        {
+          "internalType": "uint256",
+          "name": "tokenId",
+          "type": "uint256"
+        },
+        {
+          "internalType": "address",
+          "name": "revoker",
+          "type": "address"
+        }
+      ],
+      "name": "revokeViewPermission",
+      "outputs": [
+        {
+          "internalType": "uint256",
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
     {
       "inputs": [
         {
@@ -766,6 +790,54 @@
       "outputs": [],
       "stateMutability": "nonpayable",
       "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "uint256",
+          "name": "tokenId",
+          "type": "uint256"
+        },
+        {
+          "internalType": "address",
+          "name": "grantee",
+          "type": "address"
+        }
+      ],
+      "name": "grantViewPermission",
+      "outputs": [
+        {
+          "internalType": "uint256",
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "uint256",
+          "name": "tokenId",
+          "type": "uint256"
+        },
+        {
+          "internalType": "address",
+          "name": "user",
+          "type": "address"
+        }
+      ],
+      "name": "checkViewPermission",
+      "outputs": [
+        {
+          "internalType": "bool",
+          "name": "",
+          "type": "bool"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
     }
   ],
   "bytecode": 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diff --git a/src/contract/VWBLMetaTx.json b/src/contract/VWBLMetaTx.json
index 9eff5e21..c997c933 100644
--- a/src/contract/VWBLMetaTx.json
+++ b/src/contract/VWBLMetaTx.json
@@ -1,5 +1,29 @@
 {
     "abi": [
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          },
+          {
+            "internalType": "address",
+            "name": "revoker",
+            "type": "address"
+          }
+        ],
+        "name": "revokeViewPermission",
+        "outputs": [
+          {
+            "internalType": "uint256",
+            "name": "",
+            "type": "uint256"
+          }
+        ],
+        "stateMutability": "nonpayable",
+        "type": "function"
+      },
         {
           "inputs": [
             {
@@ -760,6 +784,54 @@
           ],
           "stateMutability": "pure",
           "type": "function"
+        },
+        {
+          "inputs": [
+            {
+              "internalType": "uint256",
+              "name": "tokenId",
+              "type": "uint256"
+            },
+            {
+              "internalType": "address",
+              "name": "grantee",
+              "type": "address"
+            }
+          ],
+          "name": "grantViewPermission",
+          "outputs": [
+            {
+              "internalType": "uint256",
+              "name": "",
+              "type": "uint256"
+            }
+          ],
+          "stateMutability": "nonpayable",
+          "type": "function"
+        },
+        {
+          "inputs": [
+            {
+              "internalType": "uint256",
+              "name": "tokenId",
+              "type": "uint256"
+            },
+            {
+              "internalType": "address",
+              "name": "user",
+              "type": "address"
+            }
+          ],
+          "name": "checkViewPermission",
+          "outputs": [
+            {
+              "internalType": "bool",
+              "name": "",
+              "type": "bool"
+            }
+          ],
+          "stateMutability": "view",
+          "type": "function"
         }
       ]
 }
\ No newline at end of file
diff --git a/src/contract/VWBLMetaTxSupportIPFS.json b/src/contract/VWBLMetaTxSupportIPFS.json
index c35b7e5b..c7d3f87c 100644
--- a/src/contract/VWBLMetaTxSupportIPFS.json
+++ b/src/contract/VWBLMetaTxSupportIPFS.json
@@ -1,5 +1,29 @@
 {
     "abi": [
+      {
+        "inputs": [
+          {
+            "internalType": "uint256",
+            "name": "tokenId",
+            "type": "uint256"
+          },
+          {
+            "internalType": "address",
+            "name": "revoker",
+            "type": "address"
+          }
+        ],
+        "name": "revokeViewPermission",
+        "outputs": [
+          {
+            "internalType": "uint256",
+            "name": "",
+            "type": "uint256"
+          }
+        ],
+        "stateMutability": "nonpayable",
+        "type": "function"
+      },
         {
           "inputs": [
             {
@@ -765,6 +789,54 @@
           ],
           "stateMutability": "pure",
           "type": "function"
+        },
+        {
+          "inputs": [
+            {
+              "internalType": "uint256",
+              "name": "tokenId",
+              "type": "uint256"
+            },
+            {
+              "internalType": "address",
+              "name": "grantee",
+              "type": "address"
+            }
+          ],
+          "name": "grantViewPermission",
+          "outputs": [
+            {
+              "internalType": "uint256",
+              "name": "",
+              "type": "uint256"
+            }
+          ],
+          "stateMutability": "nonpayable",
+          "type": "function"
+        },
+        {
+          "inputs": [
+            {
+              "internalType": "uint256",
+              "name": "tokenId",
+              "type": "uint256"
+            },
+            {
+              "internalType": "address",
+              "name": "user",
+              "type": "address"
+            }
+          ],
+          "name": "checkViewPermission",
+          "outputs": [
+            {
+              "internalType": "bool",
+              "name": "",
+              "type": "bool"
+            }
+          ],
+          "stateMutability": "view",
+          "type": "function"
         }
       ]
 }
\ No newline at end of file
diff --git a/src/util/biconomyHelper.ts b/src/util/biconomyHelper.ts
index 2d5a3bb7..3f88d047 100644
--- a/src/util/biconomyHelper.ts
+++ b/src/util/biconomyHelper.ts
@@ -1,3 +1,4 @@
+import * as abi from "ethereumjs-abi";
 import { ethers } from "ethers";
 
 const biconomyForwarderDomainData = {
@@ -89,3 +90,22 @@ export const getDomainSeparator = (forwarderAddress: string, chainId: number) =>
   );
   return domainSeparator;
 };
+
+export const getDataToSignForPersonalSign = (request: TxParam) => {
+  const hashToSign = abi.soliditySHA3(
+    ["address", "address", "address", "uint256", "uint256", "uint256", "uint256", "uint256", "bytes32"],
+    [
+      request.from,
+      request.to,
+      request.token,
+      request.txGas,
+      request.tokenGasPrice,
+      request.batchId,
+      request.batchNonce,
+      request.deadline,
+      ethers.utils.keccak256(request.data),
+    ]
+  );
+
+  return hashToSign;
+};
diff --git a/src/vwbl/base.ts b/src/vwbl/base.ts
index 92c1a47c..f0e9fdf7 100644
--- a/src/vwbl/base.ts
+++ b/src/vwbl/base.ts
@@ -49,7 +49,7 @@ export class VWBLBase {
    * @remarks
    * You need to call this method before you send a transaction（eg. mint NFT, decrypt NFT data）
    */
-  protected _sign = async (signer: Web3 | ethers.providers.JsonRpcSigner | ethers.Wallet, targetContract?: string) => {
+  protected _sign = async (signer: Web3 | ethers.Signer, targetContract?: string) => {
     //TODO: signerがWeb3 instanceかどうかを判断するロジックを切り出さないといけない signer instanceof Web3では意図した通り動かなかったため
     const castedSigner = signer as any;
     // eslint-disable-next-line
@@ -67,9 +67,7 @@ export class VWBLBase {
     console.log("signed");
   };
 
-  protected _getAddressBySigner = async (
-    signer: Web3 | ethers.providers.JsonRpcSigner | ethers.Wallet
-  ): Promise<string> => {
+  protected _getAddressBySigner = async (signer: Web3 | ethers.Signer): Promise<string> => {
     //TODO: signerがWeb3 instanceかどうかを判断するロジックを切り出さないといけない signer instanceof Web3では意図した通り動かなかったため
     const castedSigner = signer as any;
     // eslint-disable-next-line
diff --git a/src/vwbl/blockchain/Sign.ts b/src/vwbl/blockchain/Sign.ts
index 231a4f1f..723d34b7 100644
--- a/src/vwbl/blockchain/Sign.ts
+++ b/src/vwbl/blockchain/Sign.ts
@@ -9,10 +9,7 @@ const isEthersSigner = (signer: IEthersSigner): signer is IEthersSigner => {
   return signer.signMessage !== undefined;
 };
 
-export const signToProtocol = async (
-  signer: Web3 | ethers.providers.JsonRpcSigner | ethers.Wallet,
-  signMessage: string
-) => {
+export const signToProtocol = async (signer: Web3 | ethers.Signer, signMessage: string) => {
   if (isEthersSigner(signer as IEthersSigner)) {
     return await (signer as IEthersSigner).signMessage(signMessage);
   } else {
diff --git a/src/vwbl/blockchain/erc1155/VWBLProtocolEthers.ts b/src/vwbl/blockchain/erc1155/VWBLProtocolEthers.ts
index 0b5fb49f..ef391b15 100644
--- a/src/vwbl/blockchain/erc1155/VWBLProtocolEthers.ts
+++ b/src/vwbl/blockchain/erc1155/VWBLProtocolEthers.ts
@@ -7,14 +7,14 @@ import { GasSettings } from "../../types";
 
 export class VWBLERC1155EthersContract {
   private ethersProvider: ethers.providers.BaseProvider;
-  private ethersSigner: ethers.providers.JsonRpcSigner | ethers.Wallet;
+  private ethersSigner: ethers.Signer;
   private contract: ethers.Contract;
 
   constructor(
     address: string,
     isIpfs: boolean,
     ethersProvider: ethers.providers.BaseProvider,
-    ethersSigner: ethers.providers.JsonRpcSigner | ethers.Wallet
+    ethersSigner: ethers.Signer
   ) {
     this.ethersProvider = ethersProvider;
     this.ethersSigner = ethersSigner;
diff --git a/src/vwbl/blockchain/erc6150/VWBLMetaTxProtocol.ts b/src/vwbl/blockchain/erc6150/VWBLMetaTxProtocol.ts
new file mode 100644
index 00000000..890b0a41
--- /dev/null
+++ b/src/vwbl/blockchain/erc6150/VWBLMetaTxProtocol.ts
@@ -0,0 +1,105 @@
+import { ethers } from "ethers";
+
+import vwblERC6150 from "../../../contract/VWBLERC6150ERC2981.json";
+import vwblERC6150Ipfs from "../../../contract/VWBLERC6150ERC2981ForMetadata.json";
+import { GrantViewPermissionMetaTxParam, MintForIPFSMetaTxParam, MintMetaTxParam } from "../../types";
+import { VWBLNFTMetaTx } from "../erc721/VWBLMetaTxProtocol";
+import { parseToTokenId } from "../erc721/VWBLProtocolEthers";
+
+export class VWBLERC6150MetaTxEthers extends VWBLNFTMetaTx {
+  private erc6150Address: string;
+
+  constructor(
+    biconomyAPIKey: string,
+    walletProvider: ethers.providers.Web3Provider | ethers.Wallet,
+    address: string,
+    forwarderAddress: string
+  ) {
+    super(biconomyAPIKey, walletProvider, address, forwarderAddress);
+    this.erc6150Address = address;
+  }
+
+  override async mintToken(mintParam: MintMetaTxParam): Promise<number> {
+    const myAddress = await this.ethersSigner.getAddress();
+    const vwblMetaTxContract = new ethers.Contract(this.erc6150Address, vwblERC6150.abi, this.ethersSigner);
+    const { data } = await vwblMetaTxContract.populateTransaction.mint(
+      mintParam.decryptUrl,
+      mintParam.parentId,
+      mintParam.feeNumerator,
+      mintParam.documentId
+    );
+    const chainId = await this.ethersSigner.getChainId();
+    const { txParam, sig, domainSeparator, signatureType } = await this.constructMetaTx(myAddress, data!, chainId);
+    console.log("transaction start");
+    const receipt = await this.sendTransaction(
+      txParam,
+      sig,
+      myAddress,
+      domainSeparator,
+      mintParam.mintApiId,
+      signatureType
+    );
+    console.log("transaction end");
+    const tokenId = parseToTokenId(receipt);
+    return tokenId;
+  }
+
+  override async mintTokenForIPFS(mintForIPFSParam: MintForIPFSMetaTxParam): Promise<number> {
+    const myAddress = await this.ethersSigner.getAddress();
+    const vwblMetaTxContract = new ethers.Contract(this.erc6150Address, vwblERC6150Ipfs.abi, this.ethersSigner);
+    const { data } = await vwblMetaTxContract.populateTransaction.mint(
+      mintForIPFSParam.metadataUrl,
+      mintForIPFSParam.parentId,
+      mintForIPFSParam.decryptUrl,
+      mintForIPFSParam.feeNumerator,
+      mintForIPFSParam.documentId
+    );
+    const chainId = await this.ethersSigner.getChainId();
+    const { txParam, sig, domainSeparator, signatureType } = await this.constructMetaTx(myAddress, data!, chainId);
+    console.log("transaction start");
+    const receipt = await this.sendTransaction(
+      txParam,
+      sig,
+      myAddress,
+      domainSeparator,
+      mintForIPFSParam.mintApiId,
+      signatureType
+    );
+    console.log("transaction end");
+    const tokenId = parseToTokenId(receipt);
+    return tokenId;
+  }
+
+  override async grantViewPermission(grantParam: GrantViewPermissionMetaTxParam): Promise<void> {
+    const myAddress = await this.ethersSigner.getAddress();
+    const vwblMetaTxContract = new ethers.Contract(this.erc6150Address, vwblERC6150Ipfs.abi, this.ethersSigner);
+    const { data } = await vwblMetaTxContract.populateTransaction.grantViewPermission(
+      grantParam.tokenId,
+      grantParam.grantee,
+      grantParam.toDir
+    );
+    const chainId = await this.ethersSigner.getChainId();
+    const { txParam, sig, domainSeparator, signatureType } = await this.constructMetaTx(myAddress, data!, chainId);
+    console.log("transaction start");
+    await this.sendTransaction(
+      txParam,
+      sig,
+      myAddress,
+      domainSeparator,
+      grantParam.grantViewPermissionApiId,
+      signatureType
+    );
+    console.log("transaction end");
+  }
+
+  async revokeDirPermission(tokenId: number, revoker: string, revokeViewPermisionApiId: string): Promise<void> {
+    const myAddress = await this.ethersSigner.getAddress();
+    const vwblMetaTxContract = new ethers.Contract(this.erc6150Address, vwblERC6150Ipfs.abi, this.ethersSigner);
+    const { data } = await vwblMetaTxContract.populateTransaction.revokeDirPermission(tokenId, revoker);
+    const chainId = await this.ethersSigner.getChainId();
+    const { txParam, sig, domainSeparator, signatureType } = await this.constructMetaTx(myAddress, data!, chainId);
+    console.log("transaction start");
+    await this.sendTransaction(txParam, sig, myAddress, domainSeparator, revokeViewPermisionApiId, signatureType);
+    console.log("transaction end");
+  }
+}
diff --git a/src/vwbl/blockchain/erc6150/VWBLProtocol.ts b/src/vwbl/blockchain/erc6150/VWBLProtocol.ts
new file mode 100644
index 00000000..b83b1688
--- /dev/null
+++ b/src/vwbl/blockchain/erc6150/VWBLProtocol.ts
@@ -0,0 +1,155 @@
+import { Web3 } from "web3";
+
+import vwblERC6150 from "../../../contract/VWBLERC6150ERC2981.json";
+import vwblERC6150IPFS from "../../../contract/VWBLERC6150ERC2981ForMetadata.json";
+import { getFeeSettingsBasedOnEnvironment } from "../../../util/transactionHelper";
+import { GasSettings, GrantViewPermissionTxParam, MintForIPFSTxParam, MintTxParam } from "../../types";
+import { VWBLNFT } from "../erc721/VWBLProtocol";
+
+export class VWBLERC6150Web3 extends VWBLNFT {
+  private erc6150Contract: any; // eslint-disable-line
+
+  constructor(web3: Web3, address: string, isIpfs: boolean) {
+    super(web3, address, isIpfs);
+    this.erc6150Contract = isIpfs
+      ? new web3.eth.Contract(vwblERC6150IPFS.abi, address)
+      : new web3.eth.Contract(vwblERC6150.abi, address);
+  }
+
+  override async mintToken(mintParam: MintTxParam): Promise<number> {
+    const myAddress = (await this.web3.eth.getAccounts())[0];
+    const fee = await this.getFee();
+    let txSettings: unknown;
+    if (mintParam.gasSettings?.gasPrice) {
+      const gas = await this.erc6150Contract.methods
+        .mint(mintParam.decryptUrl, mintParam.parentId, mintParam.feeNumerator, mintParam.documentId)
+        .estimateGas({ from: myAddress, value: fee });
+      txSettings = {
+        from: myAddress,
+        value: fee,
+        gasPrice: mintParam.gasSettings?.gasPrice,
+        gas,
+      };
+    } else {
+      const { maxPriorityFeePerGas: _maxPriorityFeePerGas, maxFeePerGas: _maxFeePerGas } =
+        getFeeSettingsBasedOnEnvironment(
+          mintParam.gasSettings?.maxPriorityFeePerGas,
+          mintParam.gasSettings?.maxFeePerGas
+        );
+      txSettings = {
+        from: myAddress,
+        value: fee,
+        maxPriorityFeePerGas: _maxPriorityFeePerGas,
+        maxFeePerGas: _maxFeePerGas,
+      };
+    }
+    console.log("transaction start");
+    const receipt = await this.erc6150Contract.methods
+      .mint(mintParam.decryptUrl, mintParam.parentId, mintParam.feeNumerator, mintParam.documentId)
+      .send(txSettings);
+    console.log("transaction end");
+    const tokenId: number = receipt.events.Transfer.returnValues.tokenId;
+    return tokenId;
+  }
+
+  override async mintTokenForIPFS(mintForIPFSParam: MintForIPFSTxParam): Promise<number> {
+    const myAddress = (await this.web3.eth.getAccounts())[0];
+    const fee = await this.getFee();
+    let txSettings: unknown;
+    if (mintForIPFSParam.gasSettings?.gasPrice) {
+      const gas = await this.erc6150Contract.methods
+        .mint(
+          mintForIPFSParam.metadataUrl,
+          mintForIPFSParam.decryptUrl,
+          mintForIPFSParam.parentId,
+          mintForIPFSParam.feeNumerator,
+          mintForIPFSParam.documentId
+        )
+        .estimateGas({ from: myAddress, value: fee });
+      txSettings = {
+        from: myAddress,
+        value: fee,
+        gasPrice: mintForIPFSParam.gasSettings?.gasPrice,
+        gas,
+      };
+    } else {
+      const { maxPriorityFeePerGas: _maxPriorityFeePerGas, maxFeePerGas: _maxFeePerGas } =
+        getFeeSettingsBasedOnEnvironment(
+          mintForIPFSParam.gasSettings?.maxPriorityFeePerGas,
+          mintForIPFSParam.gasSettings?.maxFeePerGas
+        );
+      txSettings = {
+        from: myAddress,
+        value: fee,
+        maxPriorityFeePerGas: _maxPriorityFeePerGas,
+        maxFeePerGas: _maxFeePerGas,
+      };
+    }
+    console.log("transaction start");
+    const receipt = await this.erc6150Contract.methods
+      .mint(
+        mintForIPFSParam.metadataUrl,
+        mintForIPFSParam.decryptUrl,
+        mintForIPFSParam.parentId,
+        mintForIPFSParam.feeNumerator,
+        mintForIPFSParam.documentId
+      )
+      .send(txSettings);
+    console.log("transaction end");
+    const tokenId: number = receipt.events.Transfer.returnValues.tokenId;
+    return tokenId;
+  }
+
+  override async grantViewPermission(grantParam: GrantViewPermissionTxParam): Promise<void> {
+    const myAddress = (await this.web3.eth.getAccounts())[0];
+    let txSettings: unknown;
+    if (grantParam.gasSettings?.gasPrice) {
+      const gas = await this.erc6150Contract.methods
+        .grantViewPermission(grantParam.tokenId, grantParam.grantee, grantParam.toDir)
+        .estimateGas({ from: myAddress });
+      txSettings = {
+        from: myAddress,
+        gasPrice: grantParam.gasSettings?.gasPrice,
+        gas,
+      };
+    } else {
+      const { maxPriorityFeePerGas: _maxPriorityFeePerGas, maxFeePerGas: _maxFeePerGas } =
+        getFeeSettingsBasedOnEnvironment(
+          grantParam.gasSettings?.maxPriorityFeePerGas,
+          grantParam.gasSettings?.maxFeePerGas
+        );
+      txSettings = {
+        from: myAddress,
+        maxPriorityFeePerGas: _maxPriorityFeePerGas,
+        maxFeePerGas: _maxFeePerGas,
+      };
+    }
+    await this.erc6150Contract.methods
+      .grantViewPermission(grantParam.tokenId, grantParam.grantee, grantParam.toDir)
+      .send(txSettings);
+  }
+
+  async revokeDirPermission(tokenId: number, revoker: string, gasSettings?: GasSettings): Promise<void> {
+    const myAddress = (await this.web3.eth.getAccounts())[0];
+    let txSettings: unknown;
+    if (gasSettings?.gasPrice) {
+      const gas = await this.erc6150Contract.methods
+        .revokeDirPermission(tokenId, revoker)
+        .estimateGas({ from: myAddress });
+      txSettings = {
+        from: myAddress,
+        gasPrice: gasSettings?.gasPrice,
+        gas,
+      };
+    } else {
+      const { maxPriorityFeePerGas: _maxPriorityFeePerGas, maxFeePerGas: _maxFeePerGas } =
+        getFeeSettingsBasedOnEnvironment(gasSettings?.maxPriorityFeePerGas, gasSettings?.maxFeePerGas);
+      txSettings = {
+        from: myAddress,
+        maxPriorityFeePerGas: _maxPriorityFeePerGas,
+        maxFeePerGas: _maxFeePerGas,
+      };
+    }
+    await this.erc6150Contract.methods.revokeDirPermission(tokenId, revoker).send(txSettings);
+  }
+}
diff --git a/src/vwbl/blockchain/erc6150/VWBLProtocolEthers.ts b/src/vwbl/blockchain/erc6150/VWBLProtocolEthers.ts
new file mode 100644
index 00000000..01cffd6c
--- /dev/null
+++ b/src/vwbl/blockchain/erc6150/VWBLProtocolEthers.ts
@@ -0,0 +1,136 @@
+import { ethers } from "ethers";
+
+import vwblERC6150 from "../../../contract/VWBLERC6150ERC2981.json";
+import vwblERC6150IPFS from "../../../contract/VWBLERC6150ERC2981ForMetadata.json";
+import { getFeeSettingsBasedOnEnvironment } from "../../../util/transactionHelper";
+import { GasSettings, GrantViewPermissionTxParam, MintForIPFSTxParam, MintTxParam } from "../../types";
+import { parseToTokenId, VWBLNFTEthers } from "../erc721/VWBLProtocolEthers";
+
+export class VWBLERC6150Ethers extends VWBLNFTEthers {
+  private erc6150Contract: ethers.Contract;
+
+  constructor(
+    address: string,
+    isIpfs: boolean,
+    ethersProvider: ethers.providers.BaseProvider,
+    ethersSigner: ethers.Signer
+  ) {
+    super(address, isIpfs, ethersProvider, ethersSigner);
+    this.erc6150Contract = isIpfs
+      ? new ethers.Contract(address, vwblERC6150IPFS.abi, ethersSigner)
+      : new ethers.Contract(address, vwblERC6150.abi, ethersSigner);
+  }
+
+  override async mintToken(mintParam: MintTxParam): Promise<number> {
+    const fee = await this.getFee();
+    let txSettings: unknown;
+    if (mintParam.gasSettings?.gasPrice) {
+      txSettings = {
+        value: fee,
+        gasPrice: mintParam.gasSettings?.gasPrice,
+      };
+    } else {
+      const { maxPriorityFeePerGas: _maxPriorityFeePerGas, maxFeePerGas: _maxFeePerGas } =
+        getFeeSettingsBasedOnEnvironment(
+          mintParam.gasSettings?.maxPriorityFeePerGas,
+          mintParam.gasSettings?.maxFeePerGas
+        );
+      txSettings = {
+        value: fee,
+        maxPriorityFeePerGas: _maxPriorityFeePerGas,
+        maxFeePerGas: _maxFeePerGas,
+      };
+    }
+    console.log("transaction start");
+    const tx = await this.erc6150Contract.mint(
+      mintParam.decryptUrl,
+      mintParam.parentId,
+      mintParam.feeNumerator,
+      mintParam.documentId,
+      txSettings
+    );
+    const receipt = await this.ethersProvider.waitForTransaction(tx.hash);
+    console.log("transaction end");
+    const tokenId = parseToTokenId(receipt);
+    return tokenId;
+  }
+
+  override async mintTokenForIPFS(mintForIPFSParam: MintForIPFSTxParam): Promise<number> {
+    const fee = await this.getFee();
+    let txSettings: unknown;
+    if (mintForIPFSParam.gasSettings?.gasPrice) {
+      txSettings = {
+        value: fee,
+        gasPrice: mintForIPFSParam.gasSettings?.gasPrice,
+      };
+    } else {
+      const { maxPriorityFeePerGas: _maxPriorityFeePerGas, maxFeePerGas: _maxFeePerGas } =
+        getFeeSettingsBasedOnEnvironment(
+          mintForIPFSParam.gasSettings?.maxPriorityFeePerGas,
+          mintForIPFSParam.gasSettings?.maxFeePerGas
+        );
+      txSettings = {
+        value: fee,
+        maxPriorityFeePerGas: _maxPriorityFeePerGas,
+        maxFeePerGas: _maxFeePerGas,
+      };
+    }
+    console.log("transaction start");
+    const tx = await this.erc6150Contract.mint(
+      mintForIPFSParam.metadataUrl,
+      mintForIPFSParam.decryptUrl,
+      mintForIPFSParam.parentId,
+      mintForIPFSParam.feeNumerator,
+      mintForIPFSParam.documentId,
+      txSettings
+    );
+    const receipt = await this.ethersProvider.waitForTransaction(tx.hash);
+    console.log("transaction end");
+    const tokenId = parseToTokenId(receipt);
+    return tokenId;
+  }
+
+  override async grantViewPermission(grantParam: GrantViewPermissionTxParam): Promise<void> {
+    let txSettings: unknown;
+    if (grantParam.gasSettings?.gasPrice) {
+      txSettings = {
+        gasPrice: grantParam.gasSettings?.gasPrice,
+      };
+    } else {
+      const { maxPriorityFeePerGas: _maxPriorityFeePerGas, maxFeePerGas: _maxFeePerGas } =
+        getFeeSettingsBasedOnEnvironment(
+          grantParam.gasSettings?.maxPriorityFeePerGas,
+          grantParam.gasSettings?.maxFeePerGas
+        );
+      txSettings = {
+        maxPriorityFeePerGas: _maxPriorityFeePerGas,
+        maxFeePerGas: _maxFeePerGas,
+      };
+    }
+    const tx = await this.erc6150Contract.grantViewPermission(
+      grantParam.tokenId,
+      grantParam.grantee,
+      grantParam.toDir,
+      txSettings
+    );
+    await this.ethersProvider.waitForTransaction(tx.hash);
+  }
+
+  async revokeDirPermission(tokenId: number, revoker: string, gasSettings?: GasSettings): Promise<void> {
+    let txSettings: unknown;
+    if (gasSettings?.gasPrice) {
+      txSettings = {
+        gasPrice: gasSettings?.gasPrice,
+      };
+    } else {
+      const { maxPriorityFeePerGas: _maxPriorityFeePerGas, maxFeePerGas: _maxFeePerGas } =
+        getFeeSettingsBasedOnEnvironment(gasSettings?.maxPriorityFeePerGas, gasSettings?.maxFeePerGas);
+      txSettings = {
+        maxPriorityFeePerGas: _maxPriorityFeePerGas,
+        maxFeePerGas: _maxFeePerGas,
+      };
+    }
+    const tx = await this.erc6150Contract.revokeDirPermission(tokenId, revoker, txSettings);
+    await this.ethersProvider.waitForTransaction(tx.hash);
+  }
+}
diff --git a/src/vwbl/blockchain/erc721/VWBLMetaTxProtocol.ts b/src/vwbl/blockchain/erc721/VWBLMetaTxProtocol.ts
index 84d1b849..a34f2d41 100644
--- a/src/vwbl/blockchain/erc721/VWBLMetaTxProtocol.ts
+++ b/src/vwbl/blockchain/erc721/VWBLMetaTxProtocol.ts
@@ -7,71 +7,86 @@ import vwblMetaTxIpfs from "../../../contract/VWBLMetaTxSupportIPFS.json";
 import {
   buildForwardTxRequest,
   getDataToSignForEIP712,
+  getDataToSignForPersonalSign,
   getDomainSeparator,
   TxParam,
 } from "../../../util/biconomyHelper";
+import { GrantViewPermissionMetaTxParam, MintForIPFSMetaTxParam, MintMetaTxParam } from "../../types";
 
 export class VWBLNFTMetaTx {
-  private walletProvider: ethers.providers.Web3Provider;
+  private walletProvider: ethers.providers.Web3Provider | ethers.Wallet;
+  protected ethersSigner: ethers.Signer;
   private nftAddress: string;
   private forwarderAddress: string;
   private biconomyAPIKey: string;
 
   constructor(
     biconomyAPIKey: string,
-    walletProvider: ethers.providers.Web3Provider,
+    walletProvider: ethers.providers.Web3Provider | ethers.Wallet,
     nftAddress: string,
     forwarderAddress: string
   ) {
     this.biconomyAPIKey = biconomyAPIKey;
     this.walletProvider = walletProvider;
+    this.ethersSigner = isWeb3Provider(walletProvider as IWeb3Provider)
+      ? (walletProvider as IWeb3Provider).getSigner()
+      : (walletProvider as ethers.Wallet);
     this.nftAddress = nftAddress;
     this.forwarderAddress = forwarderAddress;
   }
 
-  async mintToken(decryptUrl: string, feeNumerator: number, documentId: string, mintApiId: string): Promise<number> {
-    const walletSigner = this.walletProvider.getSigner();
-    const myAddress = await walletSigner.getAddress();
-    const vwblMetaTxContract = new ethers.Contract(this.nftAddress, vwblMetaTx.abi, walletSigner);
-    const { data } = await vwblMetaTxContract.populateTransaction.mint(decryptUrl, feeNumerator, documentId);
-    const chainId = await walletSigner.getChainId();
-    const { txParam, sig, domainSeparator } = await this.constructMetaTx(myAddress, data!, chainId);
+  async mintToken(mintParam: MintMetaTxParam): Promise<number> {
+    const myAddress = await this.ethersSigner.getAddress();
+    const vwblMetaTxContract = new ethers.Contract(this.nftAddress, vwblMetaTx.abi, this.ethersSigner);
+    const { data } = await vwblMetaTxContract.populateTransaction.mint(
+      mintParam.decryptUrl,
+      mintParam.feeNumerator,
+      mintParam.documentId
+    );
+    const chainId = await this.ethersSigner.getChainId();
+    const { txParam, sig, domainSeparator, signatureType } = await this.constructMetaTx(myAddress, data!, chainId);
     console.log("transaction start");
-    const receipt = await this.sendTransaction(txParam, sig, myAddress, domainSeparator, mintApiId, "EIP712_SIGN");
+    const receipt = await this.sendTransaction(
+      txParam,
+      sig,
+      myAddress,
+      domainSeparator,
+      mintParam.mintApiId,
+      signatureType
+    );
     console.log("transaction end");
     const tokenId = parseToTokenId(receipt);
     return tokenId;
   }
 
-  async mintTokenForIPFS(
-    metadataUrl: string,
-    decryptUrl: string,
-    feeNumerator: number,
-    documentId: string,
-    mintApiId: string
-  ): Promise<number> {
-    const walletSigner = this.walletProvider.getSigner();
-    const myAddress = await walletSigner.getAddress();
-    const vwblMetaTxContract = new ethers.Contract(this.nftAddress, vwblMetaTxIpfs.abi, walletSigner);
+  async mintTokenForIPFS(mintForIPFSParam: MintForIPFSMetaTxParam): Promise<number> {
+    const myAddress = await this.ethersSigner.getAddress();
+    const vwblMetaTxContract = new ethers.Contract(this.nftAddress, vwblMetaTxIpfs.abi, this.ethersSigner);
     const { data } = await vwblMetaTxContract.populateTransaction.mint(
-      metadataUrl,
-      decryptUrl,
-      feeNumerator,
-      documentId
+      mintForIPFSParam.metadataUrl,
+      mintForIPFSParam.decryptUrl,
+      mintForIPFSParam.feeNumerator,
+      mintForIPFSParam.documentId
     );
-    const chainId = await walletSigner.getChainId();
-    const { txParam, sig, domainSeparator } = await this.constructMetaTx(myAddress, data!, chainId);
+    const chainId = await this.ethersSigner.getChainId();
+    const { txParam, sig, domainSeparator, signatureType } = await this.constructMetaTx(myAddress, data!, chainId);
     console.log("transaction start");
-    const receipt = await this.sendTransaction(txParam, sig, myAddress, domainSeparator, mintApiId, "EIP712_SIGN");
+    const receipt = await this.sendTransaction(
+      txParam,
+      sig,
+      myAddress,
+      domainSeparator,
+      mintForIPFSParam.mintApiId,
+      signatureType
+    );
     console.log("transaction end");
     const tokenId = parseToTokenId(receipt);
     return tokenId;
   }
 
   async getOwnTokenIds() {
-    const walletSigner = this.walletProvider.getSigner();
-    const myAddress = await walletSigner.getAddress();
-    const vwblMetaTxContract = new ethers.Contract(this.nftAddress, vwblMetaTxIpfs.abi, walletSigner);
+    const myAddress = await this.ethersSigner.getAddress();
+    const vwblMetaTxContract = new ethers.Contract(this.nftAddress, vwblMetaTxIpfs.abi, this.ethersSigner);
     const balance = await vwblMetaTxContract.callStatic.balanceOf(myAddress);
     return await Promise.all(
       range(Number.parseInt(balance)).map(async (i) => {
@@ -82,128 +97,133 @@ export class VWBLNFTMetaTx {
   }
 
   async getTokenByMinter(address: string) {
-    const vwblMetaTxContract = new ethers.Contract(
-      this.nftAddress,
-      vwblMetaTxIpfs.abi,
-      this.walletProvider.getSigner()
-    );
+    const vwblMetaTxContract = new ethers.Contract(this.nftAddress, vwblMetaTxIpfs.abi, this.ethersSigner);
     return await vwblMetaTxContract.callStatic.getTokenByMinter(address);
   }
 
   async getMetadataUrl(tokenId: number) {
-    const vwblMetaTxContract = new ethers.Contract(
-      this.nftAddress,
-      vwblMetaTxIpfs.abi,
-      this.walletProvider.getSigner()
-    );
+    const vwblMetaTxContract = new ethers.Contract(this.nftAddress, vwblMetaTxIpfs.abi, this.ethersSigner);
     return await vwblMetaTxContract.callStatic.tokenURI(tokenId);
   }
 
   async getOwner(tokenId: number) {
-    const vwblMetaTxContract = new ethers.Contract(
-      this.nftAddress,
-      vwblMetaTxIpfs.abi,
-      this.walletProvider.getSigner()
-    );
+    const vwblMetaTxContract = new ethers.Contract(this.nftAddress, vwblMetaTxIpfs.abi, this.ethersSigner);
     return await vwblMetaTxContract.callStatic.ownerOf(tokenId);
   }
 
   async getMinter(tokenId: number) {
-    const vwblMetaTxContract = new ethers.Contract(
-      this.nftAddress,
-      vwblMetaTxIpfs.abi,
-      this.walletProvider.getSigner()
-    );
+    const vwblMetaTxContract = new ethers.Contract(this.nftAddress, vwblMetaTxIpfs.abi, this.ethersSigner);
     return await vwblMetaTxContract.callStatic.getMinter(tokenId);
   }
 
+  async checkViewPermission(tokenId: number, user: string) {
+    const vwblMetaTxContract = new ethers.Contract(this.nftAddress, vwblMetaTxIpfs.abi, this.ethersSigner);
+    return await vwblMetaTxContract.callStatic.checkViewPermission(tokenId, user);
+  }
+
   async isOwnerOf(tokenId: number) {
-    const walletSigner = this.walletProvider.getSigner();
-    const myAddress = await walletSigner.getAddress();
+    const myAddress = await this.ethersSigner.getAddress();
     const owner = await this.getOwner(tokenId);
     return myAddress === owner;
   }
 
   async isMinterOf(tokenId: number) {
-    const walletSigner = this.walletProvider.getSigner();
-    const myAddress = await walletSigner.getAddress();
+    const myAddress = await this.ethersSigner.getAddress();
     const minter = await this.getMinter(tokenId);
     return myAddress === minter;
   }
 
+  async isGranteeOf(tokenId: number) {
+    const myAddress = await this.ethersSigner.getAddress();
+    return await this.checkViewPermission(tokenId, myAddress);
+  }
+
   async getFee() {
-    const vwblMetaTxContract = new ethers.Contract(
-      this.nftAddress,
-      vwblMetaTxIpfs.abi,
-      this.walletProvider.getSigner()
-    );
+    const vwblMetaTxContract = new ethers.Contract(this.nftAddress, vwblMetaTxIpfs.abi, this.ethersSigner);
     return await vwblMetaTxContract.callStatic.getFee();
   }
 
   async getTokenInfo(tokenId: number) {
-    const vwblMetaTxContract = new ethers.Contract(
-      this.nftAddress,
-      vwblMetaTxIpfs.abi,
-      this.walletProvider.getSigner()
-    );
+    const vwblMetaTxContract = new ethers.Contract(this.nftAddress, vwblMetaTxIpfs.abi, this.ethersSigner);
     return await vwblMetaTxContract.callStatic.tokenIdToTokenInfo(tokenId);
   }
 
   async approve(operator: string, tokenId: number, approveApiId: string): Promise<void> {
-    const walletSigner = this.walletProvider.getSigner();
-    const myAddress = await walletSigner.getAddress();
-    const vwblMetaTxContract = new ethers.Contract(this.nftAddress, vwblMetaTxIpfs.abi, walletSigner);
+    const myAddress = await this.ethersSigner.getAddress();
+    const vwblMetaTxContract = new ethers.Contract(this.nftAddress, vwblMetaTxIpfs.abi, this.ethersSigner);
     const { data } = await vwblMetaTxContract.populateTransaction.approve(operator, tokenId);
-    const chainId = await walletSigner.getChainId();
-    const { txParam, sig, domainSeparator } = await this.constructMetaTx(myAddress, data!, chainId);
+    const chainId = await this.ethersSigner.getChainId();
+    const { txParam, sig, domainSeparator, signatureType } = await this.constructMetaTx(myAddress, data!, chainId);
     console.log("transaction start");
-    await this.sendTransaction(txParam, sig, myAddress, domainSeparator, approveApiId, "EIP712_SIGN");
+    await this.sendTransaction(txParam, sig, myAddress, domainSeparator, approveApiId, signatureType);
     console.log("transaction end");
   }
 
   async getApproved(tokenId: number): Promise<string> {
-    const vwblMetaTxContract = new ethers.Contract(
-      this.nftAddress,
-      vwblMetaTxIpfs.abi,
-      this.walletProvider.getSigner()
-    );
+    const vwblMetaTxContract = new ethers.Contract(this.nftAddress, vwblMetaTxIpfs.abi, this.ethersSigner);
     return await vwblMetaTxContract.callStatic.getApproved(tokenId);
   }
 
   async setApprovalForAll(operator: string, setApprovalForAllApiId: string): Promise<void> {
-    const walletSigner = this.walletProvider.getSigner();
-    const myAddress = await walletSigner.getAddress();
-    const vwblMetaTxContract = new ethers.Contract(this.nftAddress, vwblMetaTxIpfs.abi, walletSigner);
+    const myAddress = await this.ethersSigner.getAddress();
+    const vwblMetaTxContract = new ethers.Contract(this.nftAddress, vwblMetaTxIpfs.abi, this.ethersSigner);
     const { data } = await vwblMetaTxContract.populateTransaction.setApprovalForAll(operator);
-    const chainId = await walletSigner.getChainId();
-    const { txParam, sig, domainSeparator } = await this.constructMetaTx(myAddress, data!, chainId);
+    const chainId = await this.ethersSigner.getChainId();
+    const { txParam, sig, domainSeparator, signatureType } = await this.constructMetaTx(myAddress, data!, chainId);
     console.log("transaction start");
-    await this.sendTransaction(txParam, sig, myAddress, domainSeparator, setApprovalForAllApiId, "EIP712_SIGN");
+    await this.sendTransaction(txParam, sig, myAddress, domainSeparator, setApprovalForAllApiId, signatureType);
     console.log("transaction end");
   }
 
   async isApprovedForAll(owner: string, operator: string): Promise<boolean> {
-    const vwblMetaTxContract = new ethers.Contract(
-      this.nftAddress,
-      vwblMetaTxIpfs.abi,
-      this.walletProvider.getSigner()
-    );
+    const vwblMetaTxContract = new ethers.Contract(this.nftAddress, vwblMetaTxIpfs.abi, this.ethersSigner);
     return await vwblMetaTxContract.callStatic.isApprovedForAll(owner, operator);
   }
 
   async safeTransfer(to: string, tokenId: number, safeTransferFromApiId: string): Promise<void> {
-    const walletSigner = this.walletProvider.getSigner();
-    const myAddress = await walletSigner.getAddress();
-    const vwblMetaTxContract = new ethers.Contract(this.nftAddress, vwblMetaTxIpfs.abi, walletSigner);
+    const myAddress = await this.ethersSigner.getAddress();
+    const vwblMetaTxContract = new ethers.Contract(this.nftAddress, vwblMetaTxIpfs.abi, this.ethersSigner);
     const { data } = await vwblMetaTxContract.populateTransaction.safeTransferFrom(myAddress, to, tokenId);
-    const chainId = await walletSigner.getChainId();
-    const { txParam, sig, domainSeparator } = await this.constructMetaTx(myAddress, data!, chainId);
+    const chainId = await this.ethersSigner.getChainId();
+    const { txParam, sig, domainSeparator, signatureType } = await this.constructMetaTx(myAddress, data!, chainId);
+    console.log("transaction start");
+    await this.sendTransaction(txParam, sig, myAddress, domainSeparator, safeTransferFromApiId, signatureType);
+    console.log("transaction end");
+  }
+
+  async grantViewPermission(grantParam: GrantViewPermissionMetaTxParam): Promise<void> {
+    const myAddress = await this.ethersSigner.getAddress();
+    const vwblMetaTxContract = new ethers.Contract(this.nftAddress, vwblMetaTxIpfs.abi, this.ethersSigner);
+    const { data } = await vwblMetaTxContract.populateTransaction.grantViewPermission(
+      grantParam.tokenId,
+      grantParam.grantee
+    );
+    const chainId = await this.ethersSigner.getChainId();
+    const { txParam, sig, domainSeparator, signatureType } = await this.constructMetaTx(myAddress, data!, chainId);
+    console.log("transaction start");
+    await this.sendTransaction(
+      txParam,
+      sig,
+      myAddress,
+      domainSeparator,
+      grantParam.grantViewPermissionApiId,
+      signatureType
+    );
+    console.log("transaction end");
+  }
+
+  async revokeViewPermission(tokenId: number, revoker: string, revokeViewPermissionApiId: string): Promise<void> {
+    const myAddress = await this.ethersSigner.getAddress();
+    const vwblMetaTxContract = new ethers.Contract(this.nftAddress, vwblMetaTxIpfs.abi, this.ethersSigner);
+    const { data } = await vwblMetaTxContract.populateTransaction.revokeViewPermission(tokenId, revoker);
+    const chainId = await this.ethersSigner.getChainId();
+    const { txParam, sig, domainSeparator, signatureType } = await this.constructMetaTx(myAddress, data!, chainId);
     console.log("transaction start");
-    await this.sendTransaction(txParam, sig, myAddress, domainSeparator, safeTransferFromApiId, "EIP712_SIGN");
+    await this.sendTransaction(txParam, sig, myAddress, domainSeparator, revokeViewPermissionApiId, signatureType);
     console.log("transaction end");
   }
 
-  private async constructMetaTx(myAddress: string, data: string, chainId: number) {
+  protected async constructMetaTx(myAddress: string, data: string, chainId: number) {
     console.log("estimate gas start");
     const gasLimit = await this.walletProvider.estimateGas({
       to: this.nftAddress,
@@ -211,11 +231,7 @@ export class VWBLNFTMetaTx {
       data,
     });
     console.log("estimate gas end");
-    const forwarderContract = new ethers.Contract(
-      this.forwarderAddress,
-      forwarder.abi,
-      this.walletProvider.getSigner()
-    );
+    const forwarderContract = new ethers.Contract(this.forwarderAddress, forwarder.abi, this.ethersSigner);
     const batchNonce = await forwarderContract.getNonce(myAddress, 0);
     const txParam: TxParam = buildForwardTxRequest(
       myAddress,
@@ -224,26 +240,37 @@ export class VWBLNFTMetaTx {
       batchNonce,
       data
     );
-    const domainSeparator = getDomainSeparator(this.forwarderAddress, chainId);
-    const dataToSign = getDataToSignForEIP712(txParam, this.forwarderAddress, chainId);
-    const sig = await this.walletProvider.send("eth_signTypedData_v3", [myAddress, dataToSign]);
-    return { txParam, sig, domainSeparator };
+
+    if (isWeb3Provider(this.walletProvider as IWeb3Provider)) {
+      const domainSeparator = getDomainSeparator(this.forwarderAddress, chainId);
+      const dataToSign = getDataToSignForEIP712(txParam, this.forwarderAddress, chainId);
+      const sig = await (this.walletProvider as ethers.providers.Web3Provider).send("eth_signTypedData_v3", [
+        myAddress,
+        dataToSign,
+      ]);
+      const signatureType = "EIP712_SIGN";
+      return { txParam, sig, domainSeparator, signatureType };
+    } else {
+      const hashToSign = getDataToSignForPersonalSign(txParam);
+      const sig = await (this.walletProvider as ethers.Wallet).signMessage(hashToSign);
+      const signatureType = "PERSONAL_SIGN";
+      return { txParam, sig, signatureType };
+    }
   }
 
-  private async sendTransaction(
+  protected async sendTransaction(
     request: TxParam,
     sig: any,
     myAddress: string,
-    domainSeparator: string,
+    domainSeparator: string | undefined,
     methodApiId: string,
     signatureType: string
   ): Promise<ethers.providers.TransactionReceipt> {
-    const params = [request, domainSeparator, sig];
-
+    const params = typeof domainSeparator === "undefined" ? [request, sig] : [request, domainSeparator, sig];
     try {
       const headers = {
         "x-api-key": this.biconomyAPIKey,
-        "content-Type": "application/json;charset=utf-8",
+        "Content-Type": "application/json;charset=utf-8",
       };
       const { data } = await axios.post(
         `https://api.biconomy.io/api/v2/meta-tx/native`,
@@ -257,7 +284,9 @@ export class VWBLNFTMetaTx {
         { headers: headers }
       );
       console.log("post meta tx resp", data);
-      const receipt = await this.walletProvider.waitForTransaction(data.txHash);
+      const receipt = isWeb3Provider(this.walletProvider as IWeb3Provider)
+        ? (this.walletProvider as ethers.providers.Web3Provider).waitForTransaction(data.txHash)
+        : (this.walletProvider as ethers.Wallet).provider.waitForTransaction(data.txHash);
       console.log("confirmed:", data.txHash);
       return receipt;
     } catch (error) {
@@ -284,3 +313,11 @@ const parseToTokenId = (receipt: ethers.providers.TransactionReceipt): number =>
   });
   return tokenId;
 };
+
+interface IWeb3Provider {
+  getSigner(): ethers.providers.JsonRpcSigner;
+}
+
+const isWeb3Provider = (walletProvider: IWeb3Provider): walletProvider is IWeb3Provider => {
+  return walletProvider.getSigner !== undefined;
+};
diff --git a/src/vwbl/blockchain/erc721/VWBLProtocol.ts b/src/vwbl/blockchain/erc721/VWBLProtocol.ts
index 60810f5d..a27f9fde 100644
--- a/src/vwbl/blockchain/erc721/VWBLProtocol.ts
+++ b/src/vwbl/blockchain/erc721/VWBLProtocol.ts
@@ -3,34 +3,37 @@ import { Web3 } from "web3";
 import vwbl from "../../../contract/VWBLERC721ERC2981.json";
 import vwblIPFS from "../../../contract/VWBLERC721ERC2981ForMetadata.json";
 import { getFeeSettingsBasedOnEnvironment } from "../../../util/transactionHelper";
-import { GasSettings } from "../../types";
+import { GasSettings, GrantViewPermissionTxParam, MintForIPFSTxParam, MintTxParam } from "../../types";
 
 export class VWBLNFT {
   private contract: any; // eslint-disable-line
-  private web3: Web3;
+  protected web3: Web3;
 
   constructor(web3: Web3, address: string, isIpfs: boolean) {
     this.web3 = web3;
     this.contract = isIpfs ? new web3.eth.Contract(vwblIPFS.abi, address) : new web3.eth.Contract(vwbl.abi, address);
   }
 
-  async mintToken(decryptUrl: string, feeNumerator: number, documentId: string, gasSettings?: GasSettings) {
+  async mintToken(mintParam: MintTxParam) {
     const myAddress = (await this.web3.eth.getAccounts())[0];
     const fee = await this.getFee();
     let txSettings: unknown;
-    if (gasSettings?.gasPrice) {
+    if (mintParam.gasSettings?.gasPrice) {
       const gas = await this.contract.methods
-        .mint(decryptUrl, feeNumerator, documentId)
+        .mint(mintParam.decryptUrl, mintParam.feeNumerator, mintParam.documentId)
         .estimateGas({ from: myAddress, value: fee });
       txSettings = {
         from: myAddress,
         value: fee,
-        gasPrice: gasSettings?.gasPrice,
+        gasPrice: mintParam.gasSettings?.gasPrice,
         gas,
       };
     } else {
       const { maxPriorityFeePerGas: _maxPriorityFeePerGas, maxFeePerGas: _maxFeePerGas } =
-        getFeeSettingsBasedOnEnvironment(gasSettings?.maxPriorityFeePerGas, gasSettings?.maxFeePerGas);
+        getFeeSettingsBasedOnEnvironment(
+          mintParam.gasSettings?.maxPriorityFeePerGas,
+          mintParam.gasSettings?.maxFeePerGas
+        );
       txSettings = {
         from: myAddress,
         value: fee,
@@ -39,35 +42,39 @@ export class VWBLNFT {
       };
     }
     console.log("transaction start");
-    const receipt = await this.contract.methods.mint(decryptUrl, feeNumerator, documentId).send(txSettings);
+    const receipt = await this.contract.methods
+      .mint(mintParam.decryptUrl, mintParam.feeNumerator, mintParam.documentId)
+      .send(txSettings);
     console.log("transaction end");
     const tokenId: number = receipt.events.Transfer.returnValues.tokenId;
     return tokenId;
   }
 
-  async mintTokenForIPFS(
-    metadataUrl: string,
-    decryptUrl: string,
-    feeNumerator: number,
-    documentId: string,
-    gasSettings?: GasSettings
-  ) {
+  async mintTokenForIPFS(mintForIPFSParam: MintForIPFSTxParam) {
     const myAddress = (await this.web3.eth.getAccounts())[0];
     const fee = await this.getFee();
     let txSettings: unknown;
-    if (gasSettings?.gasPrice) {
+    if (mintForIPFSParam.gasSettings?.gasPrice) {
       const gas = await this.contract.methods
-        .mint(metadataUrl, decryptUrl, feeNumerator, documentId)
+        .mint(
+          mintForIPFSParam.metadataUrl,
+          mintForIPFSParam.decryptUrl,
+          mintForIPFSParam.feeNumerator,
+          mintForIPFSParam.documentId
+        )
         .estimateGas({ from: myAddress, value: fee });
       txSettings = {
         from: myAddress,
         value: fee,
-        gasPrice: gasSettings?.gasPrice,
+        gasPrice: mintForIPFSParam.gasSettings?.gasPrice,
         gas,
       };
     } else {
       const { maxPriorityFeePerGas: _maxPriorityFeePerGas, maxFeePerGas: _maxFeePerGas } =
-        getFeeSettingsBasedOnEnvironment(gasSettings?.maxPriorityFeePerGas, gasSettings?.maxFeePerGas);
+        getFeeSettingsBasedOnEnvironment(
+          mintForIPFSParam.gasSettings?.maxPriorityFeePerGas,
+          mintForIPFSParam.gasSettings?.maxFeePerGas
+        );
       txSettings = {
         from: myAddress,
         value: fee,
@@ -77,7 +84,12 @@ export class VWBLNFT {
     }
     console.log("transaction start");
     const receipt = await this.contract.methods
-      .mint(metadataUrl, decryptUrl, feeNumerator, documentId)
+      .mint(
+        mintForIPFSParam.metadataUrl,
+        mintForIPFSParam.decryptUrl,
+        mintForIPFSParam.feeNumerator,
+        mintForIPFSParam.documentId
+      )
       .send(txSettings);
     console.log("transaction end");
     const tokenId: number = receipt.events.Transfer.returnValues.tokenId;
@@ -111,6 +123,10 @@ export class VWBLNFT {
     return await this.contract.methods.getMinter(tokenId).call();
   }
 
+  async checkViewPermission(tokenId: number, user: string) {
+    return await this.contract.methods.checkViewPermission(tokenId, user).call();
+  }
+
   async isOwnerOf(tokenId: number) {
     const myAddress = (await this.web3.eth.getAccounts())[0];
     const owner = await this.getOwner(tokenId);
@@ -123,6 +139,11 @@ export class VWBLNFT {
     return myAddress === minter;
   }
 
+  async isGranteeOf(tokenId: number) {
+    const myAddress = (await this.web3.eth.getAccounts())[0];
+    return await this.checkViewPermission(tokenId, myAddress);
+  }
+
   async getFee() {
     return await this.contract.methods.getFee().call();
   }
@@ -204,6 +225,55 @@ export class VWBLNFT {
     }
     await this.contract.methods.safeTransferFrom(myAddress, to, tokenId).send(txSettings);
   }
+
+  async grantViewPermission(grantParam: GrantViewPermissionTxParam): Promise<void> {
+    const myAddress = (await this.web3.eth.getAccounts())[0];
+    let txSettings: unknown;
+    if (grantParam.gasSettings?.gasPrice) {
+      const gas = await this.contract.methods
+        .grantViewPermission(grantParam.tokenId, grantParam.grantee)
+        .estimateGas({ from: myAddress });
+      txSettings = {
+        from: myAddress,
+        gasPrice: grantParam.gasSettings?.gasPrice,
+        gas,
+      };
+    } else {
+      const { maxPriorityFeePerGas: _maxPriorityFeePerGas, maxFeePerGas: _maxFeePerGas } =
+        getFeeSettingsBasedOnEnvironment(
+          grantParam.gasSettings?.maxPriorityFeePerGas,
+          grantParam.gasSettings?.maxFeePerGas
+        );
+      txSettings = {
+        from: myAddress,
+        maxPriorityFeePerGas: _maxPriorityFeePerGas,
+        maxFeePerGas: _maxFeePerGas,
+      };
+    }
+    await this.contract.methods.grantViewPermission(grantParam.tokenId, grantParam.grantee).send(txSettings);
+  }
+
+  async revokeViewPermission(tokenId: number, revoker: string, gasSettings?: GasSettings): Promise<void> {
+    const myAddress = (await this.web3.eth.getAccounts())[0];
+    let txSettings: unknown;
+    if (gasSettings?.gasPrice) {
+      const gas = await this.contract.methods.revokeViewPermission(tokenId, revoker).estimateGas({ from: myAddress });
+      txSettings = {
+        from: myAddress,
+        gasPrice: gasSettings?.gasPrice,
+        gas,
+      };
+    } else {
+      const { maxPriorityFeePerGas: _maxPriorityFeePerGas, maxFeePerGas: _maxFeePerGas } =
+        getFeeSettingsBasedOnEnvironment(gasSettings?.maxPriorityFeePerGas, gasSettings?.maxFeePerGas);
+      txSettings = {
+        from: myAddress,
+        maxPriorityFeePerGas: _maxPriorityFeePerGas,
+        maxFeePerGas: _maxFeePerGas,
+      };
+    }
+    await this.contract.methods.revokeViewPermission(tokenId, revoker).send(txSettings);
+  }
 }
 
 const range = (length: number) => {
diff --git a/src/vwbl/blockchain/erc721/VWBLProtocolEthers.ts b/src/vwbl/blockchain/erc721/VWBLProtocolEthers.ts
index 096c9db9..53cdee8a 100644
--- a/src/vwbl/blockchain/erc721/VWBLProtocolEthers.ts
+++ b/src/vwbl/blockchain/erc721/VWBLProtocolEthers.ts
@@ -3,18 +3,18 @@ import { ethers } from "ethers";
 import vwbl from "../../../contract/VWBLERC721ERC2981.json";
 import vwblIPFS from "../../../contract/VWBLERC721ERC2981ForMetadata.json";
 import { getFeeSettingsBasedOnEnvironment } from "../../../util/transactionHelper";
-import { GasSettings } from "../../types";
+import { GasSettings, GrantViewPermissionTxParam, MintForIPFSTxParam, MintTxParam } from "../../types";
 
 export class VWBLNFTEthers {
-  private ethersProvider: ethers.providers.BaseProvider;
-  private ethersSigner: ethers.providers.JsonRpcSigner | ethers.Wallet;
+  protected ethersProvider: ethers.providers.BaseProvider;
+  private ethersSigner: ethers.Signer;
   private contract: ethers.Contract;
 
   constructor(
     address: string,
     isIpfs: boolean,
     ethersProvider: ethers.providers.BaseProvider,
-    ethersSigner: ethers.providers.JsonRpcSigner | ethers.Wallet
+    ethersSigner: ethers.Signer
   ) {
     this.ethersProvider = ethersProvider;
     this.ethersSigner = ethersSigner;
@@ -23,17 +23,20 @@ export class VWBLNFTEthers {
       : new ethers.Contract(address, vwbl.abi, ethersSigner);
   }
 
-  async mintToken(decryptUrl: string, feeNumerator: number, documentId: string, gasSettings?: GasSettings) {
+  async mintToken(mintParam: MintTxParam) {
     const fee = await this.getFee();
     let txSettings: unknown;
-    if (gasSettings?.gasPrice) {
+    if (mintParam.gasSettings?.gasPrice) {
       txSettings = {
         value: fee,
-        gasPrice: gasSettings?.gasPrice,
+        gasPrice: mintParam.gasSettings?.gasPrice,
       };
     } else {
       const { maxPriorityFeePerGas: _maxPriorityFeePerGas, maxFeePerGas: _maxFeePerGas } =
-        getFeeSettingsBasedOnEnvironment(gasSettings?.maxPriorityFeePerGas, gasSettings?.maxFeePerGas);
+        getFeeSettingsBasedOnEnvironment(
+          mintParam.gasSettings?.maxPriorityFeePerGas,
+          mintParam.gasSettings?.maxFeePerGas
+        );
       txSettings = {
         value: fee,
         maxPriorityFeePerGas: _maxPriorityFeePerGas,
@@ -41,30 +44,27 @@ export class VWBLNFTEthers {
       };
     }
     console.log("transaction start");
-    const tx = await this.contract.mint(decryptUrl, feeNumerator, documentId, txSettings);
+    const tx = await this.contract.mint(mintParam.decryptUrl, mintParam.feeNumerator, mintParam.documentId, txSettings);
     const receipt = await this.ethersProvider.waitForTransaction(tx.hash);
     console.log("transaction end");
     const tokenId = parseToTokenId(receipt);
     return tokenId;
   }
 
-  async mintTokenForIPFS(
-    metadataUrl: string,
-    decryptUrl: string,
-    feeNumerator: number,
-    documentId: string,
-    gasSettings?: GasSettings
-  ) {
+  async mintTokenForIPFS(mintForIPFSParam: MintForIPFSTxParam) {
     const fee = await this.getFee();
     let txSettings: unknown;
-    if (gasSettings?.gasPrice) {
+    if (mintForIPFSParam.gasSettings?.gasPrice) {
       txSettings = {
         value: fee,
-        gasPrice: gasSettings?.gasPrice,
+        gasPrice: mintForIPFSParam.gasSettings?.gasPrice,
       };
     } else {
       const { maxPriorityFeePerGas: _maxPriorityFeePerGas, maxFeePerGas: _maxFeePerGas } =
-        getFeeSettingsBasedOnEnvironment(gasSettings?.maxPriorityFeePerGas, gasSettings?.maxFeePerGas);
+        getFeeSettingsBasedOnEnvironment(
+          mintForIPFSParam.gasSettings?.maxPriorityFeePerGas,
+          mintForIPFSParam.gasSettings?.maxFeePerGas
+        );
       txSettings = {
         value: fee,
         maxPriorityFeePerGas: _maxPriorityFeePerGas,
@@ -72,7 +72,13 @@ export class VWBLNFTEthers {
       };
     }
     console.log("transaction start");
-    const tx = await this.contract.mint(metadataUrl, decryptUrl, feeNumerator, documentId, txSettings);
+    const tx = await this.contract.mint(
+      mintForIPFSParam.metadataUrl,
+      mintForIPFSParam.decryptUrl,
+      mintForIPFSParam.feeNumerator,
+      mintForIPFSParam.documentId,
+      txSettings
+    );
     const receipt = await this.ethersProvider.waitForTransaction(tx.hash);
     console.log("transaction end");
     const tokenId = parseToTokenId(receipt);
@@ -106,6 +112,10 @@ export class VWBLNFTEthers {
     return await this.contract.callStatic.getMinter(tokenId);
   }
 
+  async checkViewPermission(tokenId: number, user: string) {
+    return await this.contract.callStatic.checkViewPermission(tokenId, user);
+  }
+
   async isOwnerOf(tokenId: number) {
     const myAddress = await this.ethersSigner.getAddress();
     const owner = await this.getOwner(tokenId);
@@ -118,6 +128,11 @@ export class VWBLNFTEthers {
     return myAddress === minter;
   }
 
+  async isGranteeOf(tokenId: number) {
+    const myAddress = await this.ethersSigner.getAddress();
+    return await this.checkViewPermission(tokenId, myAddress);
+  }
+
   async getFee() {
     return await this.contract.callStatic.getFee();
   }
@@ -188,13 +203,52 @@ export class VWBLNFTEthers {
     const tx = await this.contract.safeTransferFrom(myAddress, to, tokenId, txSettings);
     await this.ethersProvider.waitForTransaction(tx.hash);
   }
+
+  async grantViewPermission(grantParam: GrantViewPermissionTxParam): Promise<void> {
+    let txSettings: unknown;
+    if (grantParam.gasSettings?.gasPrice) {
+      txSettings = {
+        gasPrice: grantParam.gasSettings?.gasPrice,
+      };
+    } else {
+      const { maxPriorityFeePerGas: _maxPriorityFeePerGas, maxFeePerGas: _maxFeePerGas } =
+        getFeeSettingsBasedOnEnvironment(
+          grantParam.gasSettings?.maxPriorityFeePerGas,
+          grantParam.gasSettings?.maxFeePerGas
+        );
+      txSettings = {
+        maxPriorityFeePerGas: _maxPriorityFeePerGas,
+        maxFeePerGas: _maxFeePerGas,
+      };
+    }
+    const tx = await this.contract.grantViewPermission(grantParam.tokenId, grantParam.grantee, txSettings);
+    await this.ethersProvider.waitForTransaction(tx.hash);
+  }
+
+  async revokeViewPermission(tokenId: number, revoker: string, gasSettings?: GasSettings): Promise<void> {
+    let txSettings: unknown;
+    if (gasSettings?.gasPrice) {
+      txSettings = {
+        gasPrice: gasSettings?.gasPrice,
+      };
+    } else {
+      const { maxPriorityFeePerGas: _maxPriorityFeePerGas, maxFeePerGas: _maxFeePerGas } =
+        getFeeSettingsBasedOnEnvironment(gasSettings?.maxPriorityFeePerGas, gasSettings?.maxFeePerGas);
+      txSettings = {
+        maxPriorityFeePerGas: _maxPriorityFeePerGas,
+        maxFeePerGas: _maxFeePerGas,
+      };
+    }
+    const tx = await this.contract.revokeViewPermission(tokenId, revoker, txSettings);
+    await this.ethersProvider.waitForTransaction(tx.hash);
+  }
 }
 
 const range = (length: number) => {
   return Array.from(Array(length).keys());
 };
 
-const parseToTokenId = (receipt: ethers.providers.TransactionReceipt): number => {
+export const parseToTokenId = (receipt: ethers.providers.TransactionReceipt): number => {
   const eventInterface = new ethers.utils.Interface([
     "event nftDataRegistered(address contractAddress, uint256 tokenId)",
   ]);
diff --git a/src/vwbl/blockchain/index.ts b/src/vwbl/blockchain/index.ts
index f1d968c2..b0c1f5df 100644
--- a/src/vwbl/blockchain/index.ts
+++ b/src/vwbl/blockchain/index.ts
@@ -4,3 +4,6 @@ export * from "./erc721/VWBLMetaTxProtocol";
 export * from "./erc721/VWBLProtocolEthers";
 export * from "./erc1155/VWBLProtocol";
 export * from "./erc1155/VWBLProtocolEthers";
+export * from "./erc6150/VWBLProtocol";
+export * from "./erc6150/VWBLProtocolEthers";
+export * from "./erc6150/VWBLMetaTxProtocol";
diff --git a/src/vwbl/erc6150/VWBL.ts b/src/vwbl/erc6150/VWBL.ts
new file mode 100644
index 00000000..0f6d6889
--- /dev/null
+++ b/src/vwbl/erc6150/VWBL.ts
@@ -0,0 +1,357 @@
+import { utils } from "ethers";
+import * as fs from "fs";
+
+import { uploadEncryptedFile, uploadMetadata, uploadThumbnail } from "../../storage/aws";
+import { createRandomKey, encryptFile, encryptStream, encryptString, getMimeType, toBase64FromBlob } from "../../util";
+import { VWBLERC6150Ethers, VWBLERC6150Web3 } from "../blockchain/";
+import { VWBL } from "../erc721/VWBL";
+import {
+  ConstructorProps,
+  EncryptLogic,
+  EthersConstructorProps,
+  FileOrPath,
+  GasSettings,
+  GrantViewPermission,
+  ManagedCreateToken,
+  ManagedCreateTokenForIPFS,
+  MintToken,
+  MintTokenForIPFS,
+  ProgressSubscriber,
+  StepStatus,
+  UploadContentType,
+  UploadEncryptedFile,
+  UploadMetadata,
+  UploadMetadataType,
+  UploadThumbnail,
+} from "../types";
+
+export class VWBLERC6150 extends VWBL {
+  public erc6150: VWBLERC6150Web3 | VWBLERC6150Ethers;
+
+  constructor(props: ConstructorProps | EthersConstructorProps) {
+    super(props);
+    this.erc6150 =
+      "web3" in props
+        ? new VWBLERC6150Web3(props.web3, props.contractAddress, props.uploadMetadataType === UploadMetadataType.IPFS)
+        : new VWBLERC6150Ethers(
+            props.contractAddress,
+            props.uploadMetadataType === UploadMetadataType.IPFS,
+            props.ethersProvider,
+            props.ethersSigner
+          );
+  }
+
+  /**
+   * Create VWBL ERC6150
+   *
+   * @remarks
+   * The following happens: Minting ERC6150, Uploading encrypted data, Uploading metadata, Setting key to VWBL Network
+   * By default, metadata will be uploaded to Amazon S3.
+   * You need to pass `uploadFileCallback` and `uploadMetadataCallBack` if you upload metadata to a storage other than Amazon S3.
+   *
+   * @param name - The ERC6150 name
+   * @param description - The ERC6150 description
+   * @param plainFile - The data that only ERC6150 owner can view
+   * @param thumbnailImage - The ERC6150 image
+   * @param feeNumerator - This basis point of the sale price will be paid to the ERC6150 creator every time the ERC6150 is sold or re-sold. Ex. If feNumerator = 3.5*10^2, royalty is 3.5%
+   * @param encryptLogic - Select ether "base64" or "binary". Selection criteria: "base64" -> sutable for small data. "binary" -> sutable for large data.
+   * @param uploadEncryptedFileCallback - Optional: the function for uploading encrypted data
+   * @param uploadThumbnailCallback - Optional: the function for uploading thumbnail
+   * @param uploadMetadataCallBack - Optional: the function for uploading metadata
+   * @param subscriber - Optional: the subscriber for seeing progress
+   * @param gasSettings - Optional: the object whose keys are maxPriorityFeePerGas, maxFeePerGas and gasPrice
+   * @param parentId - Optional: The Id of parent token. If parentId param is undefined or 0, mint as root token(parentId=0)
+   * @returns
+   */
+  managedCreateToken: ManagedCreateToken = async (
+    name: string,
+    description: string,
+    plainFile: FileOrPath | FileOrPath[],
+    thumbnailImage: FileOrPath,
+    feeNumerator: number,
+    encryptLogic: EncryptLogic = "base64",
+    uploadEncryptedFileCallback?: UploadEncryptedFile,
+    uploadThumbnailCallback?: UploadThumbnail,
+    uploadMetadataCallBack?: UploadMetadata,
+    subscriber?: ProgressSubscriber,
+    gasSettings?: GasSettings,
+    parentId?: number
+  ) => {
+    if (!this.signature) {
+      throw "please sign first";
+    }
+    const { uploadContentType, uploadMetadataType, awsConfig, vwblNetworkUrl } = this.opts;
+    // 1. mint token
+    const documentId = utils.hexlify(utils.randomBytes(32));
+    const _parentId = typeof parentId !== "undefined" ? parentId : 0;
+    const tokenId = await this.erc6150.mintToken({
+      decryptUrl: vwblNetworkUrl,
+      feeNumerator,
+      documentId,
+      gasSettings,
+      parentId: _parentId,
+    });
+    subscriber?.kickStep(StepStatus.MINT_TOKEN);
+
+    // 2. create key in frontend
+    const key = createRandomKey();
+    subscriber?.kickStep(StepStatus.CREATE_KEY);
+
+    // 3. encrypt data
+    console.log("encrypt data");
+    const plainFileArray = [plainFile].flat();
+    const uuid = createRandomKey();
+    const uploadEncryptedFunction =
+      uploadContentType === UploadContentType.S3 ? uploadEncryptedFile : uploadEncryptedFileCallback;
+    const uploadThumbnailFunction =
+      uploadContentType === UploadContentType.S3 ? uploadThumbnail : uploadThumbnailCallback;
+    if (!uploadEncryptedFunction || !uploadThumbnailFunction) {
+      throw new Error("please specify upload file type or give callback");
+    }
+    subscriber?.kickStep(StepStatus.ENCRYPT_DATA);
+
+    // 4. upload data
+    console.log("upload data");
+    const isRunningOnBrowser = typeof window !== "undefined";
+    const encryptedDataUrls = await Promise.all(
+      plainFileArray.map(async (file) => {
+        const plainFileBlob = file instanceof File ? file : new File([await fs.promises.readFile(file)], file);
+        const filePath = file instanceof File ? file.name : file;
+        const fileName: string = file instanceof File ? file.name : file.split("/").slice(-1)[0]; //ファイル名の取得だけのためにpathを使いたくなかった
+        const encryptedContent =
+          encryptLogic === "base64"
+            ? encryptString(await toBase64FromBlob(plainFileBlob), key)
+            : isRunningOnBrowser
+            ? await encryptFile(plainFileBlob, key)
+            : encryptStream(fs.createReadStream(filePath), key);
+        return await uploadEncryptedFunction(fileName, encryptedContent, uuid, awsConfig);
+      })
+    );
+    const thumbnailImageUrl = await uploadThumbnailFunction(thumbnailImage, uuid, awsConfig);
+    subscriber?.kickStep(StepStatus.UPLOAD_CONTENT);
+
+    // 5. upload metadata
+    console.log("upload meta data");
+    const uploadMetadataFunction =
+      uploadMetadataType === UploadMetadataType.S3 ? uploadMetadata : uploadMetadataCallBack;
+    if (!uploadMetadataFunction) {
+      throw new Error("please specify upload metadata type or give callback");
+    }
+    const mimeType = getMimeType(plainFileArray[0]) || "";
+    await uploadMetadataFunction(
+      tokenId,
+      name,
+      description,
+      thumbnailImageUrl,
+      encryptedDataUrls,
+      mimeType,
+      encryptLogic,
+      awsConfig
+    );
+    subscriber?.kickStep(StepStatus.UPLOAD_METADATA);
+
+    // 6. set key to vwbl-network
+    console.log("set key");
+    const chainId =
+      "web3" in this.opts ? Number(await this.opts.web3.eth.getChainId()) : await this.opts.ethersSigner.getChainId();
+    const signerAddress =
+      "web3" in this.opts
+        ? await this._getAddressBySigner(this.opts.web3)
+        : await this._getAddressBySigner(this.opts.ethersSigner);
+    await this.api.setKey(documentId, chainId, key, this.signature, signerAddress);
+    subscriber?.kickStep(StepStatus.SET_KEY);
+
+    return tokenId;
+  };
+
+  /**
+   * Create VWBL ERC6150 which metadata on IPFS.
+   *
+   * @remarks
+   * The following happens: Minting ERC6150, Uploading encrypted data, Uploading metadata, Setting key to VWBL Network
+   * metadata will be uploaded to IPFS.
+   * You need to pass `uploadFileCallback` and `uploadMetadataCallBack` if you upload metadata to a storage other than Amazon S3.
+   *
+   * @param name - The ERC6150 name
+   * @param description - The ERC6150 description
+   * @param plainFile - The data that only ERC6150 owner can view
+   * @param thumbnailImage - The ERC6150 image
+   * @param feeNumerator - This basis point of the sale price will be paid to the ERC6150 creator every time the ERC6150 is sold or re-sold. Ex. If feNumerator = 3.5*10^2, royalty is 3.5%
+   * @param encryptLogic - Select ether "base64" or "binary". Selection criteria: "base64" -> sutable for small data. "binary" -> sutable for large data.
+   * @param subscriber - Optional: the subscriber for seeing progress
+   * @param gasSettings - Optional: the object whose keys are maxPriorityFeePerGas, maxFeePerGas and gasPrice
+   * @param parentId - Optional: The Id of parent token. If parentId param is undefined or 0, mint as root token(parentId=0)
+   * @returns
+   */
+  managedCreateTokenForIPFS: ManagedCreateTokenForIPFS = async (
+    name: string,
+    description: string,
+    plainFile: FileOrPath | FileOrPath[],
+    thumbnailImage: FileOrPath,
+    feeNumerator: number,
+    encryptLogic: EncryptLogic = "base64",
+    subscriber?: ProgressSubscriber,
+    gasSettings?: GasSettings,
+    parentId?: number
+  ) => {
+    if (!this.signature) {
+      throw "please sign first";
+    }
+    const { vwblNetworkUrl } = this.opts;
+    // 1. create key in frontend
+    const key = createRandomKey();
+    subscriber?.kickStep(StepStatus.CREATE_KEY);
+
+    // 2. encrypt data
+    console.log("encrypt data");
+    const plainFileArray = [plainFile].flat();
+    subscriber?.kickStep(StepStatus.ENCRYPT_DATA);
+
+    // 3. upload data
+    console.log("upload data");
+    const encryptedDataUrls = await Promise.all(
+      plainFileArray.map(async (file) => {
+        const plainFileBlob = file instanceof File ? file : new File([await fs.promises.readFile(file)], file);
+        const filePath = file instanceof File ? file.name : file;
+        const fileName: string = file instanceof File ? file.name : file.split("/").slice(-1)[0]; //ファイル名の取得だけのためにpathを使いたくなかった
+        const encryptedContent =
+          encryptLogic === "base64"
+            ? encryptString(await toBase64FromBlob(plainFileBlob), key)
+            : await encryptFile(plainFileBlob, key);
+        return await this.uploadToIpfs?.uploadEncryptedFile(encryptedContent);
+      })
+    );
+    const thumbnailImageUrl = await this.uploadToIpfs?.uploadThumbnail(thumbnailImage);
+    subscriber?.kickStep(StepStatus.UPLOAD_CONTENT);
+
+    // 4. upload metadata
+    console.log("upload meta data");
+    const mimeType = getMimeType(plainFileArray[0]);
+    const metadataUrl = await this.uploadToIpfs?.uploadMetadata(
+      name,
+      description,
+      thumbnailImageUrl as string,
+      encryptedDataUrls as string[],
+      mimeType,
+      encryptLogic
+    );
+    subscriber?.kickStep(StepStatus.UPLOAD_METADATA);
+
+    // 5. mint token
+    const documentId = utils.hexlify(utils.randomBytes(32));
+    const _parentId = typeof parentId !== "undefined" ? parentId : 0;
+    const tokenId = await this.erc6150.mintTokenForIPFS({
+      metadataUrl: metadataUrl as string,
+      decryptUrl: vwblNetworkUrl,
+      feeNumerator,
+      documentId,
+      gasSettings,
+      parentId: _parentId,
+    });
+    subscriber?.kickStep(StepStatus.MINT_TOKEN);
+
+    // 6. set key to vwbl-network
+    console.log("set key");
+    const chainId =
+      "web3" in this.opts ? Number(await this.opts.web3.eth.getChainId()) : await this.opts.ethersSigner.getChainId();
+    const signerAddress =
+      "web3" in this.opts
+        ? await this._getAddressBySigner(this.opts.web3)
+        : await this._getAddressBySigner(this.opts.ethersSigner);
+    await this.api.setKey(documentId, chainId, key, this.signature, signerAddress);
+    subscriber?.kickStep(StepStatus.SET_KEY);
+
+    return tokenId;
+  };
+
+  /**
+   * Mint new ERC6150
+   *
+   * @param feeNumerator - This basis point of the sale price will be paid to the ERC6150 creator every time the ERC6150 is sold or re-sold. Ex. If feNumerator = 3.5*10^2, royalty is 3.5%
+   * @param maxPriorityFeePerGas - Optional: the maxPriorityFeePerGas field in EIP-1559
+   * @param maxFeePerGas - Optional: the maxFeePerGas field in EIP-1559
+   * @param parentId - Optional: The Id of parent token. If parentId param is undefined or 0, mint as root token(parentId=0)
+   * @returns The ID of minted ERC6150
+   */
+  mintToken: MintToken = async (
+    feeNumerator: number,
+    gasSettings?: GasSettings,
+    parentId?: number
+  ): Promise<number> => {
+    const { vwblNetworkUrl } = this.opts;
+    const documentId = utils.hexlify(utils.randomBytes(32));
+    const _parentId = typeof parentId !== "undefined" ? parentId : 0;
+    return await this.erc6150.mintToken({
+      decryptUrl: vwblNetworkUrl,
+      feeNumerator,
+      documentId,
+      gasSettings,
+      parentId: _parentId,
+    });
+  };
+
+  /**
+   * Mint new ERC6150
+   *
+   * @param metadataUrl metadata url
+   * @param feeNumerator - This basis point of the sale price will be paid to the ERC6150 creator every time the ERC6150 is sold or re-sold. Ex. If feNumerator = 3.5*10^2, royalty is 3.5%
+   * @param maxPriorityFeePerGas - Optional: the maxPriorityFeePerGas field in EIP-1559
+   * @param maxFeePerGas - Optional: the maxFeePerGas field in EIP-1559
+   * @param parentId - Optional: The Id of parent token. If parentId param is undefined or 0, mint as root token(parentId=0)
+   * @returns The ID of minted ERC6150
+   */
+  mintTokenForIPFS: MintTokenForIPFS = async (
+    metadataUrl: string,
+    feeNumerator: number,
+    gasSettings?: GasSettings,
+    parentId?: number
+  ): Promise<number> => {
+    const { vwblNetworkUrl } = this.opts;
+    const documentId = utils.hexlify(utils.randomBytes(32));
+    const _parentId = typeof parentId !== "undefined" ? parentId : 0;
+    return await this.erc6150.mintTokenForIPFS({
+      metadataUrl,
+      decryptUrl: vwblNetworkUrl,
+      feeNumerator,
+      documentId,
+      gasSettings,
+      parentId: _parentId,
+    });
+  };
+
+  /**
+   * Grant view permission
+   *
+   * @param tokenId - The ID of ERC6150
+   * @param grantee - The wallet address of a grantee
+   * @param gasSettings - Optional: the object whose keys are maxPriorityFeePerGas, maxFeePerGas and gasPrice
+   * @param toDir - Optional: A boolean indicating whether to grant view permission directly or single ERC6150 token.
+   *                          If toDir param is undefined or false, grant view permission to single ERC6150 token.
+   *
+   */
+  grantViewPermission: GrantViewPermission = async (
+    tokenId: number,
+    grantee: string,
+    gasSettings?: GasSettings,
+    toDir?: boolean
+  ): Promise<void> => {
+    const _toDir = typeof toDir !== "undefined" ? toDir : false;
+    await this.erc6150.grantViewPermission({
+      tokenId,
+      grantee,
+      gasSettings,
+      toDir: _toDir,
+    });
+  };
+
+  /**
+   * Revoke view permission to directory (ERC6150 under parent token)
+   *
+   * @param tokenId - The ID of ERC6150
+   * @param revoker - The wallet address of a revoker
+   * @param gasSettings - Optional: the object whose keys are maxPriorityFeePerGas, maxFeePerGas and gasPrice
+   */
+  revokeDirPermission = async (tokenId: number, revoker: string, gasSettings?: GasSettings) => {
+    await this.erc6150.revokeDirPermission(tokenId, revoker, gasSettings);
+  };
+}
diff --git a/src/vwbl/erc6150/VWBLMetaTx.ts b/src/vwbl/erc6150/VWBLMetaTx.ts
new file mode 100644
index 00000000..38ad85c3
--- /dev/null
+++ b/src/vwbl/erc6150/VWBLMetaTx.ts
@@ -0,0 +1,338 @@
+import { ethers, utils } from "ethers";
+import * as fs from "fs";
+
+import { uploadEncryptedFile, uploadMetadata, uploadThumbnail } from "../../storage/aws";
+import { createRandomKey, encryptFile, encryptStream, encryptString, getMimeType, toBase64FromBlob } from "../../util";
+import { VWBLERC6150MetaTxEthers } from "../blockchain";
+import { VWBLMetaTx } from "../erc721/VWBLMetaTx";
+import {
+  EncryptLogic,
+  FileOrPath,
+  GrantViewPermissionMetaTx,
+  ManagedCreateTokenForIPFSMetaTx,
+  ManagedCreateTokenMetatx,
+  MetaTxConstructorProps,
+  MintTokenForIPFSMetaTx,
+  MintTokenMetaTx,
+  ProgressSubscriber,
+  StepStatus,
+  UploadContentType,
+  UploadEncryptedFile,
+  UploadMetadata,
+  UploadMetadataType,
+  UploadThumbnail,
+} from "../types";
+
+export class VWBLERC6150MetaTx extends VWBLMetaTx {
+  public erc6150: VWBLERC6150MetaTxEthers;
+
+  constructor(props: MetaTxConstructorProps) {
+    super(props);
+    const { bcProvider, contractAddress, biconomyConfig } = props;
+
+    const walletProvider = "address" in bcProvider ? bcProvider : new ethers.providers.Web3Provider(bcProvider);
+    this.erc6150 = new VWBLERC6150MetaTxEthers(
+      biconomyConfig.apiKey,
+      walletProvider,
+      contractAddress,
+      biconomyConfig.forwarderAddress
+    );
+  }
+
+  /**
+   * Create VWBL ERC6150
+   *
+   * @remarks
+   * The following happens: Minting ERC6150, Uploading encrypted data, Uploading metadata, Setting key to VWBL Network
+   * By default, metadata will be uploaded to Amazon S3.
+   * You need to pass `uploadFileCallback` and `uploadMetadataCallBack` if you upload metadata to a storage other than Amazon S3.
+   *
+   * @param name - The ERC6150 name
+   * @param description - The ERC6150 description
+   * @param plainFile - The data that only ERC6150 owner can view
+   * @param thumbnailImage - The ERC6150 image
+   * @param feeNumerator - This basis point of the sale price will be paid to the ERC6150 creator every time the ERC6150 is sold or re-sold. Ex. If feNumerator = 3.5*10^2, royalty is 3.5%
+   * @param encryptLogic - Select ether "base64" or "binary". Selection criteria: "base64" -> sutable for small data. "binary" -> sutable for large data.
+   * @param mintApiId - The mint method api id of biconomy
+   * @param uploadEncryptedFileCallback - Optional: the function for uploading encrypted data
+   * @param uploadThumbnailCallback - Optional: the function for uploading thumbnail
+   * @param uploadMetadataCallBack - Optional: the function for uploading metadata
+   * @param subscriber - Optional: the subscriber for seeing progress
+   * @param parentId - Optional: The Id of parent token. If parentId param is undefined or 0, mint as root token(parentId=0)
+   * @returns
+   */
+  managedCreateToken: ManagedCreateTokenMetatx = async (
+    name: string,
+    description: string,
+    plainFile: FileOrPath | FileOrPath[],
+    thumbnailImage: FileOrPath,
+    feeNumerator: number,
+    encryptLogic: EncryptLogic = "base64",
+    mintApiId: string,
+    uploadEncryptedFileCallback?: UploadEncryptedFile,
+    uploadThumbnailCallback?: UploadThumbnail,
+    uploadMetadataCallBack?: UploadMetadata,
+    subscriber?: ProgressSubscriber,
+    parentId?: number
+  ) => {
+    if (!this.signature) {
+      throw "please sign first";
+    }
+    const { uploadContentType, uploadMetadataType, awsConfig, vwblNetworkUrl } = this.opts;
+    // 1. mint token
+    const documentId = utils.hexlify(utils.randomBytes(32));
+    const _parentId = typeof parentId !== "undefined" ? parentId : 0;
+    const tokenId = await this.erc6150.mintToken({
+      decryptUrl: vwblNetworkUrl,
+      feeNumerator,
+      documentId,
+      mintApiId,
+      parentId: _parentId,
+    });
+    subscriber?.kickStep(StepStatus.MINT_TOKEN);
+
+    // 2. create key in frontend
+    const key = createRandomKey();
+    subscriber?.kickStep(StepStatus.CREATE_KEY);
+
+    // 3. encrypt data
+    console.log("encrypt data");
+    const plainFileArray = [plainFile].flat();
+    const uuid = createRandomKey();
+    const uploadEncryptedFunction =
+      uploadContentType === UploadContentType.S3 ? uploadEncryptedFile : uploadEncryptedFileCallback;
+    const uploadThumbnailFunction =
+      uploadContentType === UploadContentType.S3 ? uploadThumbnail : uploadThumbnailCallback;
+    if (!uploadEncryptedFunction || !uploadThumbnailFunction) {
+      throw new Error("please specify upload file type or give callback");
+    }
+    subscriber?.kickStep(StepStatus.ENCRYPT_DATA);
+
+    // 4. upload data
+    console.log("upload data");
+    const isRunningOnBrowser = typeof window !== "undefined";
+    const encryptedDataUrls = await Promise.all(
+      plainFileArray.map(async (file) => {
+        const plainFileBlob = file instanceof File ? file : new File([await fs.promises.readFile(file)], file);
+        const filePath = file instanceof File ? file.name : file;
+        const fileName: string = file instanceof File ? file.name : file.split("/").slice(-1)[0]; //ファイル名の取得だけのためにpathを使いたくなかった
+        const encryptedContent =
+          encryptLogic === "base64"
+            ? encryptString(await toBase64FromBlob(plainFileBlob), key)
+            : isRunningOnBrowser
+            ? await encryptFile(plainFileBlob, key)
+            : encryptStream(fs.createReadStream(filePath), key);
+        return await uploadEncryptedFunction(fileName, encryptedContent, uuid, awsConfig);
+      })
+    );
+    const thumbnailImageUrl = await uploadThumbnailFunction(thumbnailImage, uuid, awsConfig);
+    subscriber?.kickStep(StepStatus.UPLOAD_CONTENT);
+
+    // 5. upload metadata
+    console.log("upload meta data");
+    const uploadMetadataFunction =
+      uploadMetadataType === UploadMetadataType.S3 ? uploadMetadata : uploadMetadataCallBack;
+    if (!uploadMetadataFunction) {
+      throw new Error("please specify upload metadata type or give callback");
+    }
+    const mimeType = getMimeType(plainFileArray[0]);
+    await uploadMetadataFunction(
+      tokenId,
+      name,
+      description,
+      thumbnailImageUrl,
+      encryptedDataUrls,
+      mimeType,
+      encryptLogic,
+      awsConfig
+    );
+    subscriber?.kickStep(StepStatus.UPLOAD_METADATA);
+
+    // 6. set key to vwbl-network
+    console.log("set key");
+    const chainId = await this.signer.getChainId();
+    await this.api.setKey(documentId, chainId, key, this.signature, await this._getAddressBySigner(this.signer));
+    subscriber?.kickStep(StepStatus.SET_KEY);
+
+    return tokenId;
+  };
+
+  /**
+   * Create VWBL ERC6150 which metadata on IPFS.
+   *
+   * @remarks
+   * The following happens: Minting ERC6150, Uploading encrypted data, Uploading metadata, Setting key to VWBL Network
+   * metadata will be uploaded to IPFS.
+   * You need to pass `uploadFileCallback` and `uploadMetadataCallBack` if you upload metadata to a storage other than Amazon S3.
+   *
+   * @param name - The ERC6150 name
+   * @param description - The ERC6150 description
+   * @param plainFile - The data that only ERC6150 owner can view
+   * @param thumbnailImage - The ERC6150 image
+   * @param feeNumerator - This basis point of the sale price will be paid to the ERC6150 creator every time the ERC6150 is sold or re-sold. Ex. If feNumerator = 3.5*10^2, royalty is 3.5%
+   * @param encryptLogic - Select ether "base64" or "binary". Selection criteria: "base64" -> sutable for small data. "binary" -> sutable for large data.
+   * @param mintApiId - The mint method api id of biconomy
+   * @param subscriber - Optional: the subscriber for seeing progress
+   * @param parentId - Optional: The Id of parent token. If parentId param is undefined or 0, mint as root token(parentId=0)
+   * @returns
+   */
+  managedCreateTokenForIPFS: ManagedCreateTokenForIPFSMetaTx = async (
+    name: string,
+    description: string,
+    plainFile: FileOrPath | FileOrPath[],
+    thumbnailImage: FileOrPath,
+    feeNumerator: number,
+    encryptLogic: EncryptLogic = "base64",
+    mintApiId: string,
+    subscriber?: ProgressSubscriber,
+    parentId?: number
+  ) => {
+    if (!this.signature) {
+      throw "please sign first";
+    }
+    const { vwblNetworkUrl } = this.opts;
+    // 1. create key in frontend
+    const key = createRandomKey();
+    subscriber?.kickStep(StepStatus.CREATE_KEY);
+
+    // 2. encrypt data
+    console.log("encrypt data");
+    const plainFileArray = [plainFile].flat();
+    subscriber?.kickStep(StepStatus.ENCRYPT_DATA);
+
+    // 3. upload data
+    console.log("upload data");
+    const encryptedDataUrls = await Promise.all(
+      plainFileArray.map(async (file) => {
+        const plainFileBlob = file instanceof File ? file : new File([await fs.promises.readFile(file)], file);
+        const filePath = file instanceof File ? file.name : file;
+        const fileName: string = file instanceof File ? file.name : file.split("/").slice(-1)[0]; //ファイル名の取得だけのためにpathを使いたくなかった
+        const encryptedContent =
+          encryptLogic === "base64"
+            ? encryptString(await toBase64FromBlob(plainFileBlob), key)
+            : await encryptFile(plainFileBlob, key);
+        return await this.uploadToIpfs?.uploadEncryptedFile(encryptedContent);
+      })
+    );
+    subscriber?.kickStep(StepStatus.UPLOAD_CONTENT);
+
+    const thumbnailImageUrl = await this.uploadToIpfs?.uploadThumbnail(thumbnailImage);
+    // 4. upload metadata
+    console.log("upload meta data");
+    const mimeType = getMimeType(plainFileArray[0]);
+    const metadataUrl = await this.uploadToIpfs?.uploadMetadata(
+      name,
+      description,
+      thumbnailImageUrl as string,
+      encryptedDataUrls as string[],
+      mimeType,
+      encryptLogic
+    );
+    subscriber?.kickStep(StepStatus.UPLOAD_METADATA);
+
+    // 5. mint token
+    const documentId = utils.hexlify(utils.randomBytes(32));
+    const _parentId = typeof parentId !== "undefined" ? parentId : 0;
+    const tokenId = await this.erc6150.mintTokenForIPFS({
+      metadataUrl: metadataUrl as string,
+      decryptUrl: vwblNetworkUrl,
+      feeNumerator,
+      documentId,
+      mintApiId,
+      parentId: _parentId,
+    });
+    subscriber?.kickStep(StepStatus.MINT_TOKEN);
+
+    // 6. set key to vwbl-network
+    console.log("set key");
+    const chainId = await this.signer.getChainId();
+    await this.api.setKey(documentId, chainId, key, this.signature, await this._getAddressBySigner(this.signer));
+    subscriber?.kickStep(StepStatus.SET_KEY);
+
+    return tokenId;
+  };
+
+  /**
+   * Mint new ERC6150
+   *
+   * @param feeNumerator - This basis point of the sale price will be paid to the ERC6150 creator every time the ERC6150 is sold or re-sold. Ex. If feNumerator = 3.5*10^2, royalty is 3.5%
+   * @param mintApiId - The mint method api id of biconomy
+   * @param parentId - Optional: The Id of parent token. If parentId param is undefined or 0, mint as root token(parentId=0)
+   * @returns The ID of minted ERC6150
+   */
+  mintToken: MintTokenMetaTx = async (feeNumerator: number, mintApiId: string, parentId?: number): Promise<number> => {
+    const { vwblNetworkUrl } = this.opts;
+    const documentId = utils.hexlify(utils.randomBytes(32));
+    const _parentId = typeof parentId !== "undefined" ? parentId : 0;
+    return await this.erc6150.mintToken({
+      decryptUrl: vwblNetworkUrl,
+      feeNumerator,
+      documentId,
+      mintApiId,
+      parentId: _parentId,
+    });
+  };
+
+  /**
+   * Mint new ERC6150
+   *
+   * @param metadataUrl metadata url
+   * @param feeNumerator - This basis point of the sale price will be paid to the ERC6150 creator every time the ERC6150 is sold or re-sold. Ex. If feNumerator = 3.5*10^2, royalty is 3.5%
+   * @param mintApiId - The mint method api id of biconomy
+   * @param parentId - Optional: The Id of parent token. If parentId param is undefined or 0, mint as root token(parentId=0)
+   * @returns The ID of minted ERC6150
+   */
+  mintTokenForIPFS: MintTokenForIPFSMetaTx = async (
+    metadataUrl: string,
+    feeNumerator: number,
+    mintApiId: string,
+    parentId?: number
+  ): Promise<number> => {
+    const { vwblNetworkUrl } = this.opts;
+    const documentId = utils.hexlify(utils.randomBytes(32));
+    const _parentId = typeof parentId !== "undefined" ? parentId : 0;
+    return await this.erc6150.mintTokenForIPFS({
+      metadataUrl,
+      decryptUrl: vwblNetworkUrl,
+      feeNumerator,
+      documentId,
+      mintApiId,
+      parentId: _parentId,
+    });
+  };
+
+  /**
+   * Grant view permission
+   *
+   * @param tokenId - The ID of ERC6150
+   * @param grantee - The wallet address of a grantee
+   * @param grantViewPermissionApiId - The grantViewPermission api id of biconomy
+   * @param toDir - Optional: A boolean indicating whether to grant view permission directly or single ERC6150 token.
+   *                          If toDir param is undefined or false, grant view permission to single ERC6150 token.
+   */
+  grantViewPermission: GrantViewPermissionMetaTx = async (
+    tokenId: number,
+    grantee: string,
+    grantViewPermissionApiId: string,
+    toDir?: boolean
+  ): Promise<void> => {
+    const _toDir = typeof toDir !== "undefined" ? toDir : false;
+    await this.erc6150.grantViewPermission({
+      tokenId,
+      grantee,
+      grantViewPermissionApiId,
+      toDir: _toDir,
+    });
+  };
+
+  /**
+   * Revoke view permission to directory (ERC6150 under parent token)
+   *
+   * @param tokenId - The ID of ERC6150
+   * @param revoker - The wallet address of a revoker
+   * @param revokeDirPermissionApiId - The revokeDirPermissionApiId api id of biconomy
+   */
+  revokeDirPermission = async (tokenId: number, revoker: string, revokeDirPermissionApiId: string) => {
+    await this.erc6150.revokeDirPermission(tokenId, revoker, revokeDirPermissionApiId);
+  };
+}
diff --git a/src/vwbl/erc721/VWBL.ts b/src/vwbl/erc721/VWBL.ts
index c9e9a7a0..7a3176ae 100644
--- a/src/vwbl/erc721/VWBL.ts
+++ b/src/vwbl/erc721/VWBL.ts
@@ -23,6 +23,11 @@ import {
   EthersConstructorProps,
   FileOrPath,
   GasSettings,
+  GrantViewPermission,
+  ManagedCreateToken,
+  ManagedCreateTokenForIPFS,
+  MintToken,
+  MintTokenForIPFS,
   ProgressSubscriber,
   StepStatus,
   UploadContentType,
@@ -100,7 +105,7 @@ export class VWBL extends VWBLBase {
    * @param gasSettings - Optional: the object whose keys are maxPriorityFeePerGas, maxFeePerGas and gasPrice
    * @returns
    */
-  managedCreateToken = async (
+  managedCreateToken: ManagedCreateToken = async (
     name: string,
     description: string,
     plainFile: FileOrPath | FileOrPath[],
@@ -119,7 +124,12 @@ export class VWBL extends VWBLBase {
     const { uploadContentType, uploadMetadataType, awsConfig, vwblNetworkUrl } = this.opts;
     // 1. mint token
     const documentId = utils.hexlify(utils.randomBytes(32));
-    const tokenId = await this.nft.mintToken(vwblNetworkUrl, feeNumerator, documentId, gasSettings);
+    const tokenId = await this.nft.mintToken({
+      decryptUrl: vwblNetworkUrl,
+      feeNumerator,
+      documentId,
+      gasSettings,
+    });
     subscriber?.kickStep(StepStatus.MINT_TOKEN);
 
     // 2. create key in frontend
@@ -211,7 +221,7 @@ export class VWBL extends VWBLBase {
    * @param gasSettings - Optional: the object whose keys are maxPriorityFeePerGas, maxFeePerGas and gasPrice
    * @returns
    */
-  managedCreateTokenForIPFS = async (
+  managedCreateTokenForIPFS: ManagedCreateTokenForIPFS = async (
     name: string,
     description: string,
     plainFile: FileOrPath | FileOrPath[],
@@ -266,13 +276,13 @@ export class VWBL extends VWBLBase {
 
     // 5. mint token
     const documentId = utils.hexlify(utils.randomBytes(32));
-    const tokenId = await this.nft.mintTokenForIPFS(
-      metadataUrl as string,
-      vwblNetworkUrl,
+    const tokenId = await this.nft.mintTokenForIPFS({
+      metadataUrl: metadataUrl as string,
+      decryptUrl: vwblNetworkUrl,
       feeNumerator,
       documentId,
-      gasSettings
-    );
+      gasSettings,
+    });
     subscriber?.kickStep(StepStatus.MINT_TOKEN);
 
     // 6. set key to vwbl-network
@@ -328,12 +338,14 @@ export class VWBL extends VWBLBase {
    * @param maxFeePerGas - Optional: the maxFeePerGas field in EIP-1559
    * @returns The ID of minted NFT
    */
-  mintToken = async (feeNumerator: number, gasSettings?: GasSettings): Promise<number> => {
+  mintToken: MintToken = async (feeNumerator: number, gasSettings?: GasSettings): Promise<number> => {
     const { vwblNetworkUrl } = this.opts;
     const documentId = utils.hexlify(utils.randomBytes(32));
-    return await this.nft.mintToken(vwblNetworkUrl, feeNumerator, documentId, {
-      maxPriorityFeePerGas: gasSettings?.maxPriorityFeePerGas,
-      maxFeePerGas: gasSettings?.maxFeePerGas,
+    return await this.nft.mintToken({
+      decryptUrl: vwblNetworkUrl,
+      feeNumerator,
+      documentId,
+      gasSettings,
     });
   };
 
@@ -342,12 +354,24 @@ export class VWBL extends VWBLBase {
    *
    * @param metadataUrl metadata url
    * @param feeNumerator - This basis point of the sale price will be paid to the NFT creator every time the NFT is sold or re-sold. Ex. If feNumerator = 3.5*10^2, royalty is 3.5%
+   * @param maxPriorityFeePerGas - Optional: the maxPriorityFeePerGas field in EIP-1559
+   * @param maxFeePerGas - Optional: the maxFeePerGas field in EIP-1559
    * @returns The ID of minted NFT
    */
-  mintTokenForIPFS = async (metadataUrl: string, feeNumerator: number): Promise<number> => {
+  mintTokenForIPFS: MintTokenForIPFS = async (
+    metadataUrl: string,
+    feeNumerator: number,
+    gasSettings?: GasSettings
+  ): Promise<number> => {
     const { vwblNetworkUrl } = this.opts;
     const documentId = utils.hexlify(utils.randomBytes(32));
-    return await this.nft.mintTokenForIPFS(metadataUrl, vwblNetworkUrl, feeNumerator, documentId);
+    return await this.nft.mintTokenForIPFS({
+      metadataUrl,
+      decryptUrl: vwblNetworkUrl,
+      feeNumerator,
+      documentId,
+      gasSettings,
+    });
   };
 
   /**
@@ -403,6 +427,36 @@ export class VWBL extends VWBLBase {
     await this.nft.safeTransfer(to, tokenId, gasSettings);
   };
 
+  /**
+   * Grant view permission
+   *
+   * @param tokenId - The ID of NFT
+   * @param grantee - The wallet address of a grantee
+   * @param gasSettings - Optional: the object whose keys are maxPriorityFeePerGas, maxFeePerGas and gasPrice
+   */
+  grantViewPermission: GrantViewPermission = async (
+    tokenId: number,
+    grantee: string,
+    gasSettings?: GasSettings
+  ): Promise<void> => {
+    await this.nft.grantViewPermission({
+      tokenId,
+      grantee,
+      gasSettings,
+    });
+  };
+
+  /**
+   * Revoke view permission
+   *
+   * @param tokenId - The ID of NFT
+   * @param revoker - The wallet address of revoker
+   * @param gasSettings - Optional: the object whose keys are maxPriorityFeePerGas, maxFeePerGas and gasPrice
+   */
+  revokeViewPermission = async (tokenId: number, revoker: string, gasSettings?: GasSettings): Promise<void> => {
+    await this.nft.revokeViewPermission(tokenId, revoker, gasSettings);
+  };
+
   /**
    * Uplod Metadata
    *
@@ -514,9 +568,12 @@ export class VWBL extends VWBLBase {
    * @returns Token metadata and an address of NFT owner
    */
   getTokenById = async (tokenId: number): Promise<(ExtractMetadata | Metadata) & { owner: string }> => {
-    const isOwnerOrMinter = (await this.nft.isOwnerOf(tokenId)) || (await this.nft.isMinterOf(tokenId));
+    const canViewData =
+      (await this.nft.isOwnerOf(tokenId)) ||
+      (await this.nft.isMinterOf(tokenId)) ||
+      (await this.nft.isGranteeOf(tokenId));
     const owner = await this.nft.getOwner(tokenId);
-    const metadata = isOwnerOrMinter ? await this.extractMetadata(tokenId) : await this.getMetadata(tokenId);
+    const metadata = canViewData ? await this.extractMetadata(tokenId) : await this.getMetadata(tokenId);
     if (!metadata) {
       throw new Error("metadata not found");
     }
diff --git a/src/vwbl/erc721/VWBLEthers.ts b/src/vwbl/erc721/VWBLEthers.ts
index 0e85b1dc..475aea53 100644
--- a/src/vwbl/erc721/VWBLEthers.ts
+++ b/src/vwbl/erc721/VWBLEthers.ts
@@ -101,7 +101,11 @@ export class VWBLEthers extends VWBLBase {
     const { uploadContentType, uploadMetadataType, awsConfig, vwblNetworkUrl } = this.opts;
     // 1. mint token
     const documentId = utils.hexlify(utils.randomBytes(32));
-    const tokenId = await this.nft.mintToken(vwblNetworkUrl, feeNumerator, documentId);
+    const tokenId = await this.nft.mintToken({
+      decryptUrl: vwblNetworkUrl,
+      feeNumerator,
+      documentId,
+    });
     subscriber?.kickStep(StepStatus.MINT_TOKEN);
 
     // 2. create key in frontend
@@ -247,7 +251,12 @@ export class VWBLEthers extends VWBLBase {
 
     // 5. mint token
     const documentId = utils.hexlify(utils.randomBytes(32));
-    const tokenId = await this.nft.mintTokenForIPFS(metadataUrl as string, vwblNetworkUrl, feeNumerator, documentId);
+    const tokenId = await this.nft.mintTokenForIPFS({
+      metadataUrl: metadataUrl as string,
+      decryptUrl: vwblNetworkUrl,
+      feeNumerator,
+      documentId,
+    });
     subscriber?.kickStep(StepStatus.MINT_TOKEN);
 
     // 6. set key to vwbl-network
@@ -296,7 +305,29 @@ export class VWBLEthers extends VWBLBase {
   mintToken = async (feeNumerator: number): Promise<number> => {
     const { vwblNetworkUrl } = this.opts;
     const documentId = utils.hexlify(utils.randomBytes(32));
-    return await this.nft.mintToken(vwblNetworkUrl, feeNumerator, documentId);
+    return await this.nft.mintToken({
+      decryptUrl: vwblNetworkUrl,
+      feeNumerator,
+      documentId,
+    });
+  };
+
+  /**
+   * Mint new NFT
+   *
+   * @param metadataUrl metadata url
+   * @param feeNumerator - This basis point of the sale price will be paid to the NFT creator every time the NFT is sold or re-sold. Ex. If feNumerator = 3.5*10^2, royalty is 3.5%
+   * @returns The ID of minted NFT
+   */
+  mintTokenForIPFS = async (metadataUrl: string, feeNumerator: number): Promise<number> => {
+    const { vwblNetworkUrl } = this.opts;
+    const documentId = utils.hexlify(utils.randomBytes(32));
+    return await this.nft.mintTokenForIPFS({
+      metadataUrl: metadataUrl,
+      decryptUrl: vwblNetworkUrl,
+      feeNumerator,
+      documentId,
+    });
   };
 
   /**
@@ -349,6 +380,29 @@ export class VWBLEthers extends VWBLBase {
     await this.nft.safeTransfer(to, tokenId);
   };
 
+  /**
+   * Grant view permission
+   *
+   * @param tokenId - The ID of NFT
+   * @param grantee - The wallet address of a grantee
+   */
+  grantViewPermission = async (tokenId: number, grantee: string): Promise<void> => {
+    await this.nft.grantViewPermission({
+      tokenId,
+      grantee,
+    });
+  };
+
+  /**
+   * Revoke view permission
+   *
+   * @param tokenId - The ID of NFT
+   * @param revoker - The wallet address of revoker
+   */
+  revokeViewPermission = async (tokenId: number, revoker: string): Promise<void> => {
+    await this.nft.revokeViewPermission(tokenId, revoker);
+  };
+
   /**
    * Uplod Metadata
    *
@@ -460,9 +514,12 @@ export class VWBLEthers extends VWBLBase {
    * @returns Token metadata and an address of NFT owner
    */
   getTokenById = async (tokenId: number): Promise<(ExtractMetadata | Metadata) & { owner: string }> => {
-    const isOwnerOrMinter = (await this.nft.isOwnerOf(tokenId)) || (await this.nft.isMinterOf(tokenId));
+    const canViewData =
+      (await this.nft.isOwnerOf(tokenId)) ||
+      (await this.nft.isMinterOf(tokenId)) ||
+      (await this.nft.isGranteeOf(tokenId));
     const owner = await this.nft.getOwner(tokenId);
-    const metadata = isOwnerOrMinter ? await this.extractMetadata(tokenId) : await this.getMetadata(tokenId);
+    const metadata = canViewData ? await this.extractMetadata(tokenId) : await this.getMetadata(tokenId);
     if (!metadata) {
       throw new Error("metadata not found");
     }
diff --git a/src/vwbl/erc721/VWBLMetaTx.ts b/src/vwbl/erc721/VWBLMetaTx.ts
index 72c3c462..a58fc6fd 100644
--- a/src/vwbl/erc721/VWBLMetaTx.ts
+++ b/src/vwbl/erc721/VWBLMetaTx.ts
@@ -20,7 +20,13 @@ import { ExtractMetadata, Metadata, PlainMetadata } from "../metadata";
 import {
   EncryptLogic,
   FileOrPath,
+  GrantViewPermissionMetaTx,
+  ManagedCreateTokenForIPFSMetaTx,
+  ManagedCreateTokenMetatx,
   MetaTxConstructorProps,
+  MintTokenForIPFS,
+  MintTokenForIPFSMetaTx,
+  MintTokenMetaTx,
   ProgressSubscriber,
   StepStatus,
   UploadContentType,
@@ -35,7 +41,7 @@ import { VWBLViewer } from "../viewer";
 export class VWBLMetaTx extends VWBLBase {
   public opts: VWBLMetaTxOption;
   public nft: VWBLNFTMetaTx;
-  public signer: ethers.providers.JsonRpcSigner;
+  public signer: ethers.Signer;
   public viewer?: VWBLViewer;
 
   constructor(props: MetaTxConstructorProps) {
@@ -43,14 +49,16 @@ export class VWBLMetaTx extends VWBLBase {
 
     this.opts = props;
     const { bcProvider, contractAddress, biconomyConfig, dataCollectorAddress } = props;
-    const walletProvider = new ethers.providers.Web3Provider(bcProvider);
-    this.signer = walletProvider.getSigner();
+
+    const walletProvider = "address" in bcProvider ? bcProvider : new ethers.providers.Web3Provider(bcProvider);
+    this.signer = "address" in bcProvider ? bcProvider : (walletProvider as ethers.providers.Web3Provider).getSigner();
     this.nft = new VWBLNFTMetaTx(
       biconomyConfig.apiKey,
       walletProvider,
       contractAddress,
       biconomyConfig.forwarderAddress
     );
+
     if (dataCollectorAddress) {
       this.viewer = new VWBLViewer({
         provider: walletProvider,
@@ -91,7 +99,7 @@ export class VWBLMetaTx extends VWBLBase {
    * @param subscriber - Optional: the subscriber for seeing progress
    * @returns
    */
-  managedCreateToken = async (
+  managedCreateToken: ManagedCreateTokenMetatx = async (
     name: string,
     description: string,
     plainFile: FileOrPath | FileOrPath[],
@@ -110,7 +118,12 @@ export class VWBLMetaTx extends VWBLBase {
     const { uploadContentType, uploadMetadataType, awsConfig, vwblNetworkUrl } = this.opts;
     // 1. mint token
     const documentId = utils.hexlify(utils.randomBytes(32));
-    const tokenId = await this.nft.mintToken(vwblNetworkUrl, feeNumerator, documentId, mintApiId);
+    const tokenId = await this.nft.mintToken({
+      decryptUrl: vwblNetworkUrl,
+      feeNumerator,
+      documentId,
+      mintApiId,
+    });
     subscriber?.kickStep(StepStatus.MINT_TOKEN);
 
     // 2. create key in frontend
@@ -197,7 +210,7 @@ export class VWBLMetaTx extends VWBLBase {
    * @param subscriber - Optional: the subscriber for seeing progress
    * @returns
    */
-  managedCreateTokenForIPFS = async (
+  managedCreateTokenForIPFS: ManagedCreateTokenForIPFSMetaTx = async (
     name: string,
     description: string,
     plainFile: FileOrPath | FileOrPath[],
@@ -252,13 +265,13 @@ export class VWBLMetaTx extends VWBLBase {
 
     // 5. mint token
     const documentId = utils.hexlify(utils.randomBytes(32));
-    const tokenId = await this.nft.mintTokenForIPFS(
-      metadataUrl as string,
-      vwblNetworkUrl,
+    const tokenId = await this.nft.mintTokenForIPFS({
+      metadataUrl: metadataUrl as string,
+      decryptUrl: vwblNetworkUrl,
       feeNumerator,
       documentId,
-      mintApiId
-    );
+      mintApiId,
+    });
     subscriber?.kickStep(StepStatus.MINT_TOKEN);
 
     // 6. set key to vwbl-network
@@ -299,10 +312,39 @@ export class VWBLMetaTx extends VWBLBase {
    * @param mintApiId - The mint method api id of biconomy
    * @returns The ID of minted NFT
    */
-  mintToken = async (feeNumerator: number, mintApiId: string): Promise<number> => {
+  mintToken: MintTokenMetaTx = async (feeNumerator: number, mintApiId: string): Promise<number> => {
+    const { vwblNetworkUrl } = this.opts;
+    const documentId = utils.hexlify(utils.randomBytes(32));
+    return await this.nft.mintToken({
+      decryptUrl: vwblNetworkUrl,
+      feeNumerator,
+      documentId,
+      mintApiId,
+    });
+  };
+
+  /**
+   * Mint new NFT
+   *
+   * @param metadataUrl metadata url
+   * @param feeNumerator - This basis point of the sale price will be paid to the NFT creator every time the NFT is sold or re-sold. Ex. If feNumerator = 3.5*10^2, royalty is 3.5%
+   * @param mintApiId - The mint method api id of biconomy
+   * @returns The ID of minted NFT
+   */
+  mintTokenForIPFS: MintTokenForIPFSMetaTx = async (
+    metadataUrl: string,
+    feeNumerator: number,
+    mintApiId: string
+  ): Promise<number> => {
     const { vwblNetworkUrl } = this.opts;
     const documentId = utils.hexlify(utils.randomBytes(32));
-    return await this.nft.mintToken(vwblNetworkUrl, feeNumerator, documentId, mintApiId);
+    return await this.nft.mintTokenForIPFS({
+      metadataUrl,
+      decryptUrl: vwblNetworkUrl,
+      feeNumerator,
+      documentId,
+      mintApiId,
+    });
   };
 
   /**
@@ -358,6 +400,36 @@ export class VWBLMetaTx extends VWBLBase {
     await this.nft.safeTransfer(to, tokenId, safeTransferFromApiId);
   };
 
+  /**
+   * Grant view permission
+   *
+   * @param tokenId - The ID of NFT
+   * @param grantee - The wallet address of a grantee
+   * @param grantViewPermissionApiId - The grantViewPermission api id of biconomy
+   */
+  grantViewPermission: GrantViewPermissionMetaTx = async (
+    tokenId: number,
+    grantee: string,
+    grantViewPermissionApiId: string
+  ): Promise<void> => {
+    await this.nft.grantViewPermission({
+      tokenId,
+      grantee,
+      grantViewPermissionApiId,
+    });
+  };
+
+  /**
+   * Revoke view permission
+   *
+   * @param tokenId - The ID of NFT
+   * @param revoker - The wallet address of revoker
+   * @param revokeViewPermisionApiId - The revokeViewPermission api id of biconomy
+   */
+  revokeViewPermission = async (tokenId: number, revoker: string, revokeViewPermisionApiId: string): Promise<void> => {
+    await this.nft.revokeViewPermission(tokenId, revoker, revokeViewPermisionApiId);
+  };
+
   /**
    * Uplod Metadata
    *
@@ -469,9 +541,12 @@ export class VWBLMetaTx extends VWBLBase {
    * @returns Token metadata and an address of NFT owner
    */
   getTokenById = async (tokenId: number): Promise<(ExtractMetadata | Metadata) & { owner: string }> => {
-    const isOwnerOrMinter = (await this.nft.isOwnerOf(tokenId)) || (await this.nft.isMinterOf(tokenId));
+    const canViewData =
+      (await this.nft.isOwnerOf(tokenId)) ||
+      (await this.nft.isMinterOf(tokenId)) ||
+      (await this.nft.isGranteeOf(tokenId));
     const owner = await this.nft.getOwner(tokenId);
-    const metadata = isOwnerOrMinter ? await this.extractMetadata(tokenId) : await this.getMetadata(tokenId);
+    const metadata = canViewData ? await this.extractMetadata(tokenId) : await this.getMetadata(tokenId);
     if (!metadata) {
       throw new Error("metadata not found");
     }
diff --git a/src/vwbl/index.ts b/src/vwbl/index.ts
index be66078d..19f35b43 100644
--- a/src/vwbl/index.ts
+++ b/src/vwbl/index.ts
@@ -3,6 +3,8 @@ export * from "./erc721/VWBLMetaTx";
 export * from "./erc721/VWBLEthers";
 export * from "./erc1155/VWBL";
 export * from "./erc1155/VWBLEthers";
+export * from "./erc6150/VWBL";
+export * from "./erc6150/VWBLMetaTx";
 export * from "./metadata";
 export * from "./types";
 export * from "./blockchain";
diff --git a/src/vwbl/types/ConstructorPropsType.ts b/src/vwbl/types/ConstructorPropsType.ts
index 14996f9f..c5369a76 100644
--- a/src/vwbl/types/ConstructorPropsType.ts
+++ b/src/vwbl/types/ConstructorPropsType.ts
@@ -26,7 +26,7 @@ export type VWBLOption = ConstructorProps;
 
 export type EthersConstructorProps = BaseConstructorProps & {
   ethersProvider: ethers.providers.BaseProvider;
-  ethersSigner: ethers.providers.JsonRpcSigner | ethers.Wallet;
+  ethersSigner: ethers.Signer;
   manageKeyType?: ManageKeyType;
   dataCollectorAddress?: string;
 };
@@ -34,7 +34,7 @@ export type EthersConstructorProps = BaseConstructorProps & {
 export type VWBLEthersOption = EthersConstructorProps;
 
 export type MetaTxConstructorProps = BaseConstructorProps & {
-  bcProvider: ethers.providers.ExternalProvider | ethers.providers.JsonRpcFetchFunc;
+  bcProvider: ethers.providers.ExternalProvider | ethers.providers.JsonRpcFetchFunc | ethers.Wallet;
   biconomyConfig: BiconomyConfig;
   manageKeyType?: ManageKeyType;
   dataCollectorAddress?: string;
@@ -43,7 +43,7 @@ export type MetaTxConstructorProps = BaseConstructorProps & {
 export type VWBLMetaTxOption = MetaTxConstructorProps;
 
 export type ViewerConstructorProps = {
-  provider: Web3 | ethers.providers.BaseProvider;
+  provider: Web3 | ethers.providers.BaseProvider | ethers.Wallet;
   dataCollectorAddress: string;
 };
 
diff --git a/src/vwbl/types/TxParamType.ts b/src/vwbl/types/TxParamType.ts
new file mode 100644
index 00000000..243f539d
--- /dev/null
+++ b/src/vwbl/types/TxParamType.ts
@@ -0,0 +1,34 @@
+import { GasSettings } from "./GasSettings";
+
+export type MintTxParam = {
+  decryptUrl: string;
+  feeNumerator: number;
+  documentId: string;
+  gasSettings?: GasSettings;
+  // param of ERC6150
+  parentId?: number;
+};
+
+export type MintMetaTxParam = MintTxParam & {
+  mintApiId: string;
+};
+
+export type MintForIPFSTxParam = MintTxParam & {
+  metadataUrl: string;
+};
+
+export type MintForIPFSMetaTxParam = MintForIPFSTxParam & {
+  mintApiId: string;
+};
+
+export type GrantViewPermissionTxParam = {
+  tokenId: number;
+  grantee: string;
+  gasSettings?: GasSettings;
+  // param of ERC6150
+  toDir?: boolean;
+};
+
+export type GrantViewPermissionMetaTxParam = GrantViewPermissionTxParam & {
+  grantViewPermissionApiId: string;
+};
diff --git a/src/vwbl/types/VWBLERC721ERC6150Type.ts b/src/vwbl/types/VWBLERC721ERC6150Type.ts
new file mode 100644
index 00000000..cd7bdbfb
--- /dev/null
+++ b/src/vwbl/types/VWBLERC721ERC6150Type.ts
@@ -0,0 +1,177 @@
+import {
+  EncryptLogic,
+  FileOrPath,
+  GasSettings,
+  ProgressSubscriber,
+  UploadEncryptedFile,
+  UploadMetadata,
+  UploadThumbnail,
+} from "./index";
+
+export type ManagedCreateToken = {
+  // Interface for ERC721
+  (
+    name: string,
+    description: string,
+    plainFile: FileOrPath | FileOrPath[],
+    thumbnailImage: FileOrPath,
+    feeNumerator: number,
+    encryptLogic: EncryptLogic,
+    uploadEncryptedFileCallback?: UploadEncryptedFile,
+    uploadThumbnailCallback?: UploadThumbnail,
+    uploadMetadataCallBack?: UploadMetadata,
+    subscriber?: ProgressSubscriber,
+    gasSettings?: GasSettings
+  ): Promise<number>;
+
+  // Interface for ERC6150
+  (
+    name: string,
+    description: string,
+    plainFile: FileOrPath | FileOrPath[],
+    thumbnailImage: FileOrPath,
+    feeNumerator: number,
+    encryptLogic: EncryptLogic,
+    uploadEncryptedFileCallback?: UploadEncryptedFile,
+    uploadThumbnailCallback?: UploadThumbnail,
+    uploadMetadataCallBack?: UploadMetadata,
+    subscriber?: ProgressSubscriber,
+    gasSettings?: GasSettings,
+    parentId?: number
+  ): Promise<number>;
+};
+
+export type ManagedCreateTokenForIPFS = {
+  // Interface for ERC721
+  (
+    name: string,
+    description: string,
+    plainFile: FileOrPath | FileOrPath[],
+    thumbnailImage: FileOrPath,
+    feeNumerator: number,
+    encryptLogic: EncryptLogic,
+    subscriber?: ProgressSubscriber,
+    gasSettings?: GasSettings
+  ): Promise<number>;
+
+  // Interface for ERC6150
+  (
+    name: string,
+    description: string,
+    plainFile: FileOrPath | FileOrPath[],
+    thumbnailImage: FileOrPath,
+    feeNumerator: number,
+    encryptLogic: EncryptLogic,
+    subscriber?: ProgressSubscriber,
+    gasSettings?: GasSettings,
+    parentId?: number
+  ): Promise<number>;
+};
+
+export type MintToken = {
+  // Interface for ERC721
+  (feeNumerator: number, gasSettings?: GasSettings): Promise<number>;
+
+  // Interface for ERC6150
+  (feeNumerator: number, gasSettings?: GasSettings, parentId?: number): Promise<number>;
+};
+
+export type MintTokenForIPFS = {
+  // Interface for ERC721
+  (metadataUrl: string, feeNumerator: number, gasSettings?: GasSettings): Promise<number>;
+
+  // Interface for ERC6150
+  (metadataUrl: string, feeNumerator: number, gasSettings?: GasSettings, parentId?: number): Promise<number>;
+};
+
+export type GrantViewPermission = {
+  // Interface for ERC721
+  (tokenId: number, grantee: string, gasSettings?: GasSettings): Promise<void>;
+
+  // Interface for ERC6150
+  (tokenId: number, grantee: string, gasSettings?: GasSettings, toDir?: boolean): Promise<void>;
+};
+
+export type ManagedCreateTokenMetatx = {
+  // Interface for ERC721
+  (
+    name: string,
+    description: string,
+    plainFile: FileOrPath | FileOrPath[],
+    thumbnailImage: FileOrPath,
+    feeNumerator: number,
+    encryptLogic: EncryptLogic,
+    mintApiId: string,
+    uploadEncryptedFileCallback?: UploadEncryptedFile,
+    uploadThumbnailCallback?: UploadThumbnail,
+    uploadMetadataCallBack?: UploadMetadata,
+    subscriber?: ProgressSubscriber
+  ): Promise<number>;
+
+  // Interface for ERC6150
+  (
+    name: string,
+    description: string,
+    plainFile: FileOrPath | FileOrPath[],
+    thumbnailImage: FileOrPath,
+    feeNumerator: number,
+    encryptLogic: EncryptLogic,
+    mintApiId: string,
+    uploadEncryptedFileCallback?: UploadEncryptedFile,
+    uploadThumbnailCallback?: UploadThumbnail,
+    uploadMetadataCallBack?: UploadMetadata,
+    subscriber?: ProgressSubscriber,
+    parentId?: number
+  ): Promise<number>;
+};
+
+export type ManagedCreateTokenForIPFSMetaTx = {
+  // Interface for ERC721
+  (
+    name: string,
+    description: string,
+    plainFile: FileOrPath | FileOrPath[],
+    thumbnailImage: FileOrPath,
+    feeNumerator: number,
+    encryptLogic: EncryptLogic,
+    mintApiId: string,
+    subscriber?: ProgressSubscriber
+  ): Promise<number>;
+
+  // Interface for ERC6150
+  (
+    name: string,
+    description: string,
+    plainFile: FileOrPath | FileOrPath[],
+    thumbnailImage: FileOrPath,
+    feeNumerator: number,
+    encryptLogic: EncryptLogic,
+    mintApiId: string,
+    subscriber?: ProgressSubscriber,
+    parentId?: number
+  ): Promise<number>;
+};
+
+export type MintTokenMetaTx = {
+  // Interface for ERC721
+  (feeNumerator: number, mintApiId: string): Promise<number>;
+
+  // Interface for ERC6150
+  (feeNumerator: number, mintApiId: string, parentId?: number): Promise<number>;
+};
+
+export type MintTokenForIPFSMetaTx = {
+  // Interface for ERC721
+  (metadataUrl: string, feeNumerator: number, mintApiId: string): Promise<number>;
+
+  // Interface for ERC6150
+  (metadataUrl: string, feeNumerator: number, mintApiId: string, parentId?: number): Promise<number>;
+};
+
+export type GrantViewPermissionMetaTx = {
+  // Interface for ERC721
+  (tokenId: number, grantee: string, grantViewPermissionApiId: string): Promise<void>;
+
+  // Interface for ERC6150
+  (tokenId: number, grantee: string, grantViewPermissionApiId: string, toDir?: boolean): Promise<void>;
+};
diff --git a/src/vwbl/types/index.ts b/src/vwbl/types/index.ts
index 220d25d1..8fd0ee3a 100644
--- a/src/vwbl/types/index.ts
+++ b/src/vwbl/types/index.ts
@@ -7,3 +7,5 @@ export * from "./ProgressSubscriber";
 export * from "./BiconomyConfigType";
 export * from "./ConstructorPropsType";
 export * from "./GasSettings";
+export * from "./TxParamType";
+export * from "./VWBLERC721ERC6150Type";
diff --git a/test/unit/vwbl/VWBL.test.ts b/test/unit/vwbl/VWBL.test.ts
index 1dafa0f3..31f17f83 100644
--- a/test/unit/vwbl/VWBL.test.ts
+++ b/test/unit/vwbl/VWBL.test.ts
@@ -21,7 +21,7 @@ const vwblApiStub = {
   setKey: sinon.stub(VWBLApi.prototype, "setKey"),
 };
 
-const providerUrl = "https://rpc-mumbai.maticvigil.com/";
+const providerUrl = "https://rpc-amoy.polygon.technology/";
 
 // preparation for web3.js
 const web3 = new Web3(providerUrl as string);
@@ -85,7 +85,7 @@ describe("VWBL with web3.js", () => {
     );
 
     expect(vwblProtocolStub.mintToken.callCount).equal(1);
-    expect(vwblProtocolStub.mintToken.getCall(0).args[3]).equal(undefined);
+    expect(vwblProtocolStub.mintToken.getCall(0).args[0].gasSettings).equal(undefined);
     expect(vwblApiStub.setKey.callCount).equal(1);
     expect(uploadEncryptedFileStub.callCount).equal(1);
     expect(uploadFileStub.callCount).equal(1);
@@ -113,7 +113,7 @@ describe("VWBL with web3.js", () => {
     );
 
     expect(vwblProtocolStub.mintToken.callCount).equal(2);
-    expect(vwblProtocolStub.mintToken.getCall(1).args[3]).deep.equal({maxPriorityFeePerGas: 40000000000, maxFeePerGas: 41000000000});
+    expect(vwblProtocolStub.mintToken.getCall(1).args[0].gasSettings).deep.equal({maxPriorityFeePerGas: 40000000000, maxFeePerGas: 41000000000});
     expect(vwblApiStub.setKey.callCount).equal(2);
     expect(uploadEncryptedFileStub.callCount).equal(2);
     expect(uploadFileStub.callCount).equal(2);
@@ -141,7 +141,7 @@ describe("VWBL with web3.js", () => {
     );
 
     expect(vwblProtocolStub.mintToken.callCount).equal(3);
-    expect(vwblProtocolStub.mintToken.getCall(2).args[3]).deep.equal({gasPrice: 1000});
+    expect(vwblProtocolStub.mintToken.getCall(2).args[0].gasSettings).deep.equal({gasPrice: 1000});
     expect(vwblApiStub.setKey.callCount).equal(3);
     expect(uploadEncryptedFileStub.callCount).equal(3);
     expect(uploadFileStub.callCount).equal(3);
@@ -322,7 +322,7 @@ describe("VWBL with ethers.js", () => {
     );
 
     expect(vwblProtocolStub.mintToken.callCount).equal(1);
-    expect(vwblProtocolStub.mintToken.getCall(0).args[3]).equal(undefined);
+    expect(vwblProtocolStub.mintToken.getCall(0).args[0].gasSettings).equal(undefined);
     expect(vwblApiStub.setKey.callCount).equal(7);
     expect(uploadEncryptedFileStub.callCount).equal(1);
     expect(uploadFileStub.callCount).equal(1);
@@ -350,7 +350,7 @@ describe("VWBL with ethers.js", () => {
     );
 
     expect(vwblProtocolStub.mintToken.callCount).equal(2);
-    expect(vwblProtocolStub.mintToken.getCall(1).args[3]).deep.equal({maxPriorityFeePerGas: 40000000000, maxFeePerGas: 41000000000});
+    expect(vwblProtocolStub.mintToken.getCall(1).args[0].gasSettings).deep.equal({maxPriorityFeePerGas: 40000000000, maxFeePerGas: 41000000000});
     expect(vwblApiStub.setKey.callCount).equal(8);
     expect(uploadEncryptedFileStub.callCount).equal(2);
     expect(uploadFileStub.callCount).equal(2);
@@ -378,7 +378,7 @@ describe("VWBL with ethers.js", () => {
     );
 
     expect(vwblProtocolStub.mintToken.callCount).equal(3);
-    expect(vwblProtocolStub.mintToken.getCall(2).args[3]).deep.equal({gasPrice: 1000});
+    expect(vwblProtocolStub.mintToken.getCall(2).args[0].gasSettings).deep.equal({gasPrice: 1000});
     expect(vwblApiStub.setKey.callCount).equal(9);
     expect(uploadEncryptedFileStub.callCount).equal(3);
     expect(uploadFileStub.callCount).equal(3);
diff --git a/yarn.lock b/yarn.lock
index b4e9a102..38c14b0b 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2834,7 +2834,7 @@
   resolved "https://registry.yarnpkg.com/@tokenizer/token/-/token-0.3.0.tgz#fe98a93fe789247e998c75e74e9c7c63217aa276"
   integrity sha512-OvjF+z51L3ov0OyAU0duzsYuvO01PH7x4t6DJx+guahgTnBHkhJdG7soQeTSFLWN3efnHyibZ4Z8l2EuWwJN3A==
 
-"@truffle/hdwallet-provider@^2.1.11":
+"@truffle/hdwallet-provider@^2.1.15":
   version "2.1.15"
   resolved "https://registry.yarnpkg.com/@truffle/hdwallet-provider/-/hdwallet-provider-2.1.15.tgz#fbf8e19d112db81b109ebc06ac6d9d42124b512c"
   integrity sha512-I5cSS+5LygA3WFzru9aC5+yDXVowEEbLCx0ckl/RqJ2/SCiYXkzYlR5/DjjDJuCtYhivhrn2RP9AheeFlRF+qw==
@@ -2955,6 +2955,13 @@
   dependencies:
     bignumber.js "7.2.1"
 
+"@types/ethereumjs-abi@^0.6.5":
+  version "0.6.5"
+  resolved "https://registry.yarnpkg.com/@types/ethereumjs-abi/-/ethereumjs-abi-0.6.5.tgz#a28c8b18b76c388575d40ac29d580b8040311b38"
+  integrity sha512-2XOUOXXqYkWtZ5550hM0vdjwH3ccm1Q/4bowJWuXYmx2KpDTN7BrgADC563IYJdnltYnPrZhaHJxbuagjtNuAg==
+  dependencies:
+    "@types/node" "*"
+
 "@types/graceful-fs@^4.1.3":
   version "4.1.9"
   resolved "https://registry.yarnpkg.com/@types/graceful-fs/-/graceful-fs-4.1.9.tgz#2a06bc0f68a20ab37b3e36aa238be6abdf49e8b4"