diff --git a/package.json b/package.json
index a0bd8ea321..45953fdef6 100644
--- a/package.json
+++ b/package.json
@@ -23,12 +23,16 @@
     "prepare": "husky install"
   },
   "dependencies": {
+    "bignumber.js": "^9.0.1",
     "bn.js": "^5.2.0",
     "buffer": "^6.0.3",
+    "cbor": "^7.0.5",
     "class-transformer": "^0.4.0",
     "class-validator": "^0.13.1",
     "events": "^3.3.0",
     "js-sha256": "^0.9.0",
+    "multibase": "^4.0.4",
+    "multihashes": "^4.0.2",
     "reflect-metadata": "^0.1.13",
     "node-fetch": "^2.6.1",
     "tsyringe": "^4.5.0",
diff --git a/src/decorators/attachment/Attachment.ts b/src/decorators/attachment/Attachment.ts
index 792649a68f..75f444772d 100644
--- a/src/decorators/attachment/Attachment.ts
+++ b/src/decorators/attachment/Attachment.ts
@@ -15,7 +15,7 @@ export interface AttachmentOptions {
 export interface AttachmentDataOptions {
   base64?: string
   json?: Record<string, unknown>
-  links?: []
+  links?: string[]
   jws?: Record<string, unknown>
   sha256?: string
 }
diff --git a/src/utils/BufferEncoder.ts b/src/utils/BufferEncoder.ts
index 5ffd28fa26..fc61d3297b 100644
--- a/src/utils/BufferEncoder.ts
+++ b/src/utils/BufferEncoder.ts
@@ -28,4 +28,17 @@ export class BufferEncoder {
   public static fromBase64(base64: string) {
     return Buffer.from(base64, 'base64')
   }
+
+  /**
+   * Decode string into buffer.
+   *
+   * @param str the string to decode into buffer format
+   */
+  public static fromString(str: string): Uint8Array {
+    return Buffer.from(str)
+  }
+
+  public static toUtf8String(buffer: Buffer | Uint8Array) {
+    return Buffer.from(buffer).toString()
+  }
 }
diff --git a/src/utils/MultibaseEncoder.ts b/src/utils/MultibaseEncoder.ts
new file mode 100644
index 0000000000..0f585fefa6
--- /dev/null
+++ b/src/utils/MultibaseEncoder.ts
@@ -0,0 +1,43 @@
+import multibase from 'multibase'
+import { Buffer } from './buffer'
+
+export type BaseName = multibase.BaseName
+
+export class MultibaseEncoder {
+  /**
+   *
+   * Encodes a buffer into a multibase
+   *
+   * @param {Uint8Array} buffer the buffer that has to be encoded
+   * @param {multibase.BaseName} baseName the encoding algorithm
+   */
+  public static encode(buffer: Uint8Array, baseName: multibase.BaseName = 'base58btc') {
+    return multibase.encode(baseName, buffer)
+  }
+
+  /**
+   *
+   * Decodes a multibase into a Uint8Array
+   *
+   * @param {string} data the multibase that has to be decoded
+   *
+   * @returns {Uint8array} data the decoded multibase
+   * @returns {string} encodingAlgorithm name of the encoding algorithm
+   */
+  public static decode(data: string | Uint8Array): { data: Uint8Array; baseName: string } {
+    const baseName = multibase.encodingFromData(data).name
+    return { data: multibase.decode(data), baseName }
+  }
+
+  /**
+   *
+   * Validates if it is a valid multibase encoded value
+   *
+   * @param {Uint8Array} data the multibase that needs to be validated
+   *
+   * @returns {boolean} bool wether the multibase value is encoded
+   */
+  public static validate(data: string | Uint8Array): boolean {
+    return multibase.isEncoded(data) ? true : false
+  }
+}
diff --git a/src/utils/MultihashEncoder.ts b/src/utils/MultihashEncoder.ts
new file mode 100644
index 0000000000..7b08922ac3
--- /dev/null
+++ b/src/utils/MultihashEncoder.ts
@@ -0,0 +1,41 @@
+import multihash from 'multihashes'
+import { Buffer } from './buffer'
+
+export class MultihashEncoder {
+  /**
+   *
+   * Encodes a buffer into a hash
+   *
+   * @param {Uint8Array} buffer the buffer that has to be encoded
+   * @param {string} hashName the hashing algorithm, 'sha2-256'
+   */
+  public static encode(buffer: Uint8Array, hashName: 'sha2-256') {
+    return multihash.encode(buffer, hashName)
+  }
+
+  /**
+   *
+   * Decodes the multihash
+   *
+   * @param {Uint8Array} data the multihash that has to be decoded
+   */
+  public static decode(data: Uint8Array): { data: Uint8Array; hashName: string } {
+    const decodedHash = multihash.decode(data)
+    return { data: decodedHash.digest, hashName: decodedHash.name }
+  }
+
+  /**
+   *
+   * Validates if it is a valid mulithash
+   *
+   * @param {Uint8Array} data the multihash that needs to be validated
+   */
+  public static validate(data: Uint8Array) {
+    try {
+      multihash.validate(data)
+      return true
+    } catch (e) {
+      return false
+    }
+  }
+}
diff --git a/src/utils/__tests__/MultibaseEncoder.test.ts b/src/utils/__tests__/MultibaseEncoder.test.ts
new file mode 100644
index 0000000000..2d8662d21f
--- /dev/null
+++ b/src/utils/__tests__/MultibaseEncoder.test.ts
@@ -0,0 +1,36 @@
+import { MultibaseEncoder } from '../MultibaseEncoder'
+import { Buffer } from 'buffer'
+import { BufferEncoder } from '../BufferEncoder'
+
+const validData = Buffer.from('Hello World!')
+const validMultibase = 'zKWfinQuRQ3ekD1danFHqvKRg9koFp8vpokUeREEgjSyHwweeKDFaxVHi'
+const invalidMultibase = 'gKWfinQuRQ3ekD1danFHqvKRg9koFp8vpokUeREEgjSyHwweeKDFaxVHi'
+
+describe('multibase', () => {
+  it('Encodes multibase', () => {
+    const multibase = BufferEncoder.toUtf8String(MultibaseEncoder.encode(validData, 'base58btc'))
+    expect(multibase).toEqual('z2NEpo7TZRRrLZSi2U')
+  })
+
+  it('Decodes multibase', () => {
+    const { data, baseName } = MultibaseEncoder.decode(validMultibase)
+    expect(BufferEncoder.toUtf8String(data)).toEqual('This is a valid base58btc encoded string!')
+    expect(baseName).toEqual('base58btc')
+  })
+
+  it('Validates valid multibase', () => {
+    const bool = MultibaseEncoder.validate(validMultibase)
+    expect(bool).toEqual(true)
+  })
+
+  it('Validates invalid multibase', () => {
+    const bool = MultibaseEncoder.validate(invalidMultibase)
+    expect(bool).toEqual(false)
+  })
+
+  it('Decodes invalid multibase', () => {
+    expect(() => {
+      MultibaseEncoder.decode(invalidMultibase)
+    }).toThrow(/^Unsupported encoding: g/)
+  })
+})
diff --git a/src/utils/__tests__/MultihashEncoder.test.ts b/src/utils/__tests__/MultihashEncoder.test.ts
new file mode 100644
index 0000000000..47e1a1a97c
--- /dev/null
+++ b/src/utils/__tests__/MultihashEncoder.test.ts
@@ -0,0 +1,36 @@
+import { MultihashEncoder } from '../MultihashEncoder'
+import { Buffer } from 'buffer'
+import { BufferEncoder } from '../BufferEncoder'
+
+const validData = Buffer.from('Hello World!')
+const validMultihash = new Uint8Array([18, 12, 72, 101, 108, 108, 111, 32, 87, 111, 114, 108, 100, 33])
+const invalidMultihash = new Uint8Array([99, 12, 72, 101, 108, 108, 111, 32, 87, 111, 114, 108, 100, 33])
+
+describe('multihash', () => {
+  it('encodes multihash', () => {
+    const multihash = MultihashEncoder.encode(validData, 'sha2-256')
+    expect(multihash).toEqual(new Uint8Array([18, 12, 72, 101, 108, 108, 111, 32, 87, 111, 114, 108, 100, 33]))
+  })
+
+  it('Decodes multihash', () => {
+    const { data, hashName } = MultihashEncoder.decode(validMultihash)
+    expect(hashName).toEqual('sha2-256')
+    expect(BufferEncoder.toUtf8String(data)).toEqual('Hello World!')
+  })
+
+  it('Validates valid multihash', () => {
+    const bool = MultihashEncoder.validate(validMultihash)
+    expect(bool).toEqual(true)
+  })
+
+  it('Validates invalid multihash', () => {
+    const bool = MultihashEncoder.validate(invalidMultihash)
+    expect(bool).toEqual(false)
+  })
+
+  it('Decodes invalid multihash', () => {
+    expect(() => {
+      MultihashEncoder.decode(invalidMultihash)
+    }).toThrow()
+  })
+})
diff --git a/src/utils/__tests__/hashlink.test.ts b/src/utils/__tests__/hashlink.test.ts
new file mode 100644
index 0000000000..98abc1b50d
--- /dev/null
+++ b/src/utils/__tests__/hashlink.test.ts
@@ -0,0 +1,65 @@
+import { Buffer } from 'buffer'
+import { Hashlink } from '../hashlink'
+
+const validData = {
+  data: Buffer.from('Hello World!'),
+  metaData: {
+    urls: ['https://example.org/hw.txt'],
+    contentType: 'text/plain',
+  },
+}
+
+const invalidData = {
+  data: Buffer.from('Hello World!'),
+  metaData: {
+    unknownKey: 'unkownValue',
+    contentType: 'image/png',
+  },
+}
+
+const validHashlink =
+  'hl:zQmWvQxTqbG2Z9HPJgG57jjwR154cKhbtJenbyYTWkjgF3e:zCwQVpeF6FPqFyc4pvisK5cpW4kc358NTX6ZbhqfawZTBmXm372zoAj5oLSh'
+
+const invalidHashlink =
+  'hl:zQmWvQxTqbqwlkhhhhh9w8e7rJenbyYTWkjgF3e:z51a94WAQfNv1KEcPeoV3V2isZFPFqSzE9ghNFQ8DuQu4hTHtFRug8SDgug14Ff'
+
+const invalidMetadata =
+  'hl:zQmWvQxTqbG2Z9HPJgG57jjwR154cKhbtJenbyYTWkjgF3e:zHCwSqQisPgCc2sMSNmHWyQtCKu4kgQVD6Q1Nhxff7uNRqN6r'
+
+describe('Hashlink', () => {
+  it('Encodes string to hashlink', () => {
+    const hashlink = Hashlink.encode(validData.data, 'sha2-256')
+    expect(hashlink).toEqual('hl:zQmWvQxTqbG2Z9HPJgG57jjwR154cKhbtJenbyYTWkjgF3e')
+  })
+
+  it('Encodes string and metadata to hashlink', () => {
+    const hashlink = Hashlink.encode(validData.data, 'sha2-256', 'base58btc', validData.metaData)
+    expect(hashlink).toEqual(validHashlink)
+  })
+
+  it('Decodes hashlink', () => {
+    const decodedHashlink = Hashlink.decode(validHashlink)
+    expect(decodedHashlink).toEqual({
+      checksum: 'zQmWvQxTqbG2Z9HPJgG57jjwR154cKhbtJenbyYTWkjgF3e',
+      metadata: { contentType: 'text/plain', urls: ['https://example.org/hw.txt'] },
+    })
+  })
+
+  it('Decodes invalid hashlink', () => {
+    expect(() => {
+      Hashlink.decode(invalidHashlink)
+    }).toThrow(/^invalid character 'l' in /)
+  })
+
+  it('Encodes invalid metadata in hashlink', () => {
+    expect(() => {
+      Hashlink.encode(validData.data, 'sha2-256', 'base58btc', invalidData.metaData)
+    }).toThrow(/^Metadata, /)
+  })
+
+  it('Decodes invalid metadata in hashlink', () => {
+    expect(() => {
+      Hashlink.decode(invalidMetadata)
+    }).toThrow(/^Metadata, /)
+  })
+})
diff --git a/src/utils/hashlink.ts b/src/utils/hashlink.ts
new file mode 100644
index 0000000000..288cf87823
--- /dev/null
+++ b/src/utils/hashlink.ts
@@ -0,0 +1,118 @@
+import cbor from 'cbor'
+import { sha256 } from 'js-sha256'
+import { BufferEncoder } from './BufferEncoder'
+import { Buffer } from './buffer'
+import { MultibaseEncoder, BaseName } from './MultibaseEncoder'
+import { MultihashEncoder } from './MultihashEncoder'
+import multibase from 'multibase'
+
+type Metadata = {
+  urls?: string[]
+  contentType?: string
+}
+
+export type HashlinkData = {
+  checksum: string
+  metadata?: Metadata
+}
+
+const URLS = 0x0f
+const CONTENTTYPE = 0x0e
+
+export class Hashlink {
+  /**
+   *
+   * Encodes a buffer, with optional metadata, into a hashlink
+   *
+   * @param {Buffer} buffer the buffer to encode into a hashlink
+   * @param {string} hashName the name of the hashing algorithm 'sha2-256'
+   * @param {BaseName} baseName the name of the base encoding algorithm 'base58btc'
+   * @param {Metadata} metadata the optional metadata in the hashlink
+   */
+  public static encode(buffer: Buffer, hashName: 'sha2-256', baseName: BaseName = 'base58btc', metadata?: Metadata) {
+    const checksum = this.encodeMultihashEncoder(buffer, hashName, baseName)
+    const mbMetadata = metadata ? this.encodeMetadata(metadata, baseName) : null
+    return mbMetadata ? `hl:${checksum}:${mbMetadata}` : `hl:${checksum}`
+  }
+
+  /**
+   *
+   * Decodes a hashlink into HashlinkData object
+   *
+   * @param {string} hashlink the hashlink that needs decoding
+   */
+  public static decode(hashlink: string): HashlinkData {
+    const hashlinkList = hashlink.split(':')
+    if (this.validate(hashlink)) {
+      const checksum = hashlinkList[1]
+      const metadata = hashlinkList[2] ? this.decodeMetadata(hashlinkList[2]) : null
+
+      return metadata ? { checksum, metadata } : { checksum }
+    } else {
+      throw new Error(`Hashlink, ${hashlink}, is invalid`)
+    }
+  }
+
+  public static validate(hashlink: string): boolean {
+    const hashlinkList = hashlink.split(':')
+    const validMultibase = MultibaseEncoder.validate(hashlinkList[1])
+    const { data } = MultibaseEncoder.decode(hashlinkList[1])
+    const validMultihash = MultihashEncoder.validate(data)
+    return validMultibase && validMultihash ? true : false
+  }
+
+  private static encodeMultihashEncoder(buffer: Buffer, hashName: 'sha2-256', baseName: BaseName): string {
+    // TODO: Support more hashing algorithms
+    const hash = new Uint8Array(sha256.array(buffer))
+    const mh = MultihashEncoder.encode(hash, hashName)
+    const mb = MultibaseEncoder.encode(mh, baseName)
+    return BufferEncoder.toUtf8String(mb)
+  }
+
+  private static encodeMetadata(metadata: Metadata, baseName: BaseName): string {
+    const metadataMap = new Map()
+
+    for (const key of Object.keys(metadata)) {
+      switch (key) {
+        case 'urls':
+          metadataMap.set(URLS, metadata.urls)
+          break
+        case 'contentType':
+          metadataMap.set(CONTENTTYPE, metadata.contentType)
+          break
+        default:
+          throw new Error(`Metadata, ${metadata}, is invalid`)
+      }
+    }
+
+    const cborData = cbor.encode(metadataMap)
+
+    const multibaseMetadata = MultibaseEncoder.encode(cborData, baseName)
+
+    return BufferEncoder.toUtf8String(multibaseMetadata)
+  }
+
+  private static decodeMetadata(mb: string): Metadata {
+    const obj = { urls: [], contentType: '' }
+    const { data } = MultibaseEncoder.decode(mb)
+    try {
+      // eslint-disable-next-line @typescript-eslint/no-explicit-any
+      const cborData: Map<number, any> = cbor.decode(data)
+      cborData.forEach((value, key) => {
+        switch (key) {
+          case URLS:
+            obj.urls = value
+            break
+          case CONTENTTYPE:
+            obj.contentType = value
+            break
+          default:
+            throw new Error(`Metadata, ${key}:${value}, is invalid`)
+        }
+      })
+      return obj
+    } catch (error) {
+      throw new Error(`Metadata, ${mb}, is invalid: ${error}`)
+    }
+  }
+}
diff --git a/yarn.lock b/yarn.lock
index fca5a3050d..a35a4c3041 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -303,6 +303,11 @@
     exec-sh "^0.3.2"
     minimist "^1.2.0"
 
+"@cto.af/textdecoder@^0.0.0":
+  version "0.0.0"
+  resolved "https://registry.yarnpkg.com/@cto.af/textdecoder/-/textdecoder-0.0.0.tgz#e1e8d84c936c30a0f4619971f19ca41941af9fdc"
+  integrity sha512-sJpx3F5xcVV/9jNYJQtvimo4Vfld/nD3ph+ZWtQzZ03Zo8rJC7QKQTRcIGS13Rcz80DwFNthCWMrd58vpY4ZAQ==
+
 "@eslint/eslintrc@^0.4.0":
   version "0.4.0"
   resolved "https://registry.npmjs.org/@eslint/eslintrc/-/eslintrc-0.4.0.tgz"
@@ -510,6 +515,11 @@
     "@types/yargs" "^15.0.0"
     chalk "^4.0.0"
 
+"@multiformats/base-x@^4.0.1":
+  version "4.0.1"
+  resolved "https://registry.npmjs.org/@multiformats/base-x/-/base-x-4.0.1.tgz"
+  integrity sha512-eMk0b9ReBbV23xXU693TAIrLyeO5iTgBZGSJfpqriG8UkYvr/hC9u9pyMlAakDNHWmbhMZCDs6KQO0jzKD8OTw==
+
 "@nodelib/fs.scandir@2.1.4":
   version "2.1.4"
   resolved "https://registry.npmjs.org/@nodelib/fs.scandir/-/fs.scandir-2.1.4.tgz"
@@ -989,7 +999,7 @@ abab@^2.0.3, abab@^2.0.5:
 
 abbrev@1:
   version "1.1.1"
-  resolved "https://registry.yarnpkg.com/abbrev/-/abbrev-1.1.1.tgz#f8f2c887ad10bf67f634f005b6987fed3179aac8"
+  resolved "https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz"
   integrity sha512-nne9/IiQ/hzIhY6pdDnbBtz7DjPTKrY00P/zvPSm5pOFkl6xuGrGnXn/VtTNNfNtAfZ9/1RtehkszU9qcTii0Q==
 
 accepts@~1.3.7:
@@ -1069,12 +1079,12 @@ ansi-escapes@^4.2.1:
 
 ansi-regex@^2.0.0:
   version "2.1.1"
-  resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-2.1.1.tgz#c3b33ab5ee360d86e0e628f0468ae7ef27d654df"
+  resolved "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz"
   integrity sha1-w7M6te42DYbg5ijwRorn7yfWVN8=
 
 ansi-regex@^3.0.0:
   version "3.0.0"
-  resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-3.0.0.tgz#ed0317c322064f79466c02966bddb605ab37d998"
+  resolved "https://registry.npmjs.org/ansi-regex/-/ansi-regex-3.0.0.tgz"
   integrity sha1-7QMXwyIGT3lGbAKWa922Bas32Zg=
 
 ansi-regex@^4.1.0:
@@ -1119,12 +1129,12 @@ anymatch@^3.0.3, anymatch@~3.1.1:
 
 aproba@^1.0.3:
   version "1.2.0"
-  resolved "https://registry.yarnpkg.com/aproba/-/aproba-1.2.0.tgz#6802e6264efd18c790a1b0d517f0f2627bf2c94a"
+  resolved "https://registry.npmjs.org/aproba/-/aproba-1.2.0.tgz"
   integrity sha512-Y9J6ZjXtoYh8RnXVCMOU/ttDmk1aBjunq9vO0ta5x85WDQiQfUF9sIPBITdbiiIVcBo03Hi3jMxigBtsddlXRw==
 
 are-we-there-yet@~1.1.2:
   version "1.1.5"
-  resolved "https://registry.yarnpkg.com/are-we-there-yet/-/are-we-there-yet-1.1.5.tgz#4b35c2944f062a8bfcda66410760350fe9ddfc21"
+  resolved "https://registry.npmjs.org/are-we-there-yet/-/are-we-there-yet-1.1.5.tgz"
   integrity sha512-5hYdAkZlcG8tOLujVDTgCT+uPX0VnpAH28gWsLfzpXYm7wP6mp5Q/gYyR7YQ0cKVJcXJnl3j2kpBan13PtQf6w==
   dependencies:
     delegates "^1.0.0"
@@ -1322,6 +1332,11 @@ before-after-hook@^2.2.0:
   resolved "https://registry.npmjs.org/before-after-hook/-/before-after-hook-2.2.1.tgz"
   integrity sha512-/6FKxSTWoJdbsLDF8tdIjaRiFXiE6UHsEHE3OPI/cwPURCVi1ukP0gmLn7XWEiFk5TcwQjjY5PWsU+j+tgXgmw==
 
+bignumber.js@^9.0.1:
+  version "9.0.1"
+  resolved "https://registry.yarnpkg.com/bignumber.js/-/bignumber.js-9.0.1.tgz#8d7ba124c882bfd8e43260c67475518d0689e4e5"
+  integrity sha512-IdZR9mh6ahOBv/hYGiXyVuyCetmGJhtYkqLBpTStdhEGjegpPlUawydyaF3pbIOFynJTpllEs+NP+CS9jKFLjA==
+
 binary-extensions@^2.0.0:
   version "2.2.0"
   resolved "https://registry.npmjs.org/binary-extensions/-/binary-extensions-2.2.0.tgz"
@@ -1329,7 +1344,7 @@ binary-extensions@^2.0.0:
 
 bindings@^1.3.1:
   version "1.5.0"
-  resolved "https://registry.yarnpkg.com/bindings/-/bindings-1.5.0.tgz#10353c9e945334bc0511a6d90b38fbc7c9c504df"
+  resolved "https://registry.npmjs.org/bindings/-/bindings-1.5.0.tgz"
   integrity sha512-p2q/t/mhvuOj/UeLlV6566GD/guowlr0hHxClI0W9m7MWYkL1F0hLo+0Aexs9HSPCtR1SXQ0TD3MMKrXZajbiQ==
   dependencies:
     file-uri-to-path "1.0.0"
@@ -1564,6 +1579,14 @@ caseless@~0.12.0:
   resolved "https://registry.npmjs.org/caseless/-/caseless-0.12.0.tgz"
   integrity sha1-G2gcIf+EAzyCZUMJBolCDRhxUdw=
 
+cbor@^7.0.5:
+  version "7.0.5"
+  resolved "https://registry.yarnpkg.com/cbor/-/cbor-7.0.5.tgz#ed54cdbc19fa7352bb328d00a5393aa7ce45a10f"
+  integrity sha512-0aaAPgW92lLmypb9iCd22k7tSD1FbF6dps8VQzmIBKY6ych2gO09b2vo/SbaLTmezJuB8Kh88Rvpl/Uq52mNZg==
+  dependencies:
+    "@cto.af/textdecoder" "^0.0.0"
+    nofilter "^2.0.3"
+
 chalk@4.1.0, chalk@^4.0.0, chalk@^4.1.0:
   version "4.1.0"
   resolved "https://registry.npmjs.org/chalk/-/chalk-4.1.0.tgz"
@@ -1608,7 +1631,7 @@ chokidar@^3.5.1:
 
 chownr@^1.1.1:
   version "1.1.4"
-  resolved "https://registry.yarnpkg.com/chownr/-/chownr-1.1.4.tgz#6fc9d7b42d32a583596337666e7d08084da2cc6b"
+  resolved "https://registry.npmjs.org/chownr/-/chownr-1.1.4.tgz"
   integrity sha512-jJ0bqzaylmJtVnNgzTeSOs8DPavpbYgEr/b0YL8/2GO3xJEhInFmhKMUnEJQjZumK7KXGFhUy89PrsJWlakBVg==
 
 ci-info@^2.0.0:
@@ -1700,7 +1723,7 @@ co@^4.6.0:
 
 code-point-at@^1.0.0:
   version "1.1.0"
-  resolved "https://registry.yarnpkg.com/code-point-at/-/code-point-at-1.1.0.tgz#0d070b4d043a5bea33a2f1a40e2edb3d9a4ccf77"
+  resolved "https://registry.npmjs.org/code-point-at/-/code-point-at-1.1.0.tgz"
   integrity sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c=
 
 collect-v8-coverage@^1.0.0:
@@ -1776,7 +1799,7 @@ configstore@^5.0.1:
 
 console-control-strings@^1.0.0, console-control-strings@~1.1.0:
   version "1.1.0"
-  resolved "https://registry.yarnpkg.com/console-control-strings/-/console-control-strings-1.1.0.tgz#3d7cf4464db6446ea644bf4b39507f9851008e8e"
+  resolved "https://registry.npmjs.org/console-control-strings/-/console-control-strings-1.1.0.tgz"
   integrity sha1-PXz0Rk22RG6mRL9LOVB/mFEAjo4=
 
 content-disposition@0.5.3:
@@ -2026,7 +2049,7 @@ delayed-stream@~1.0.0:
 
 delegates@^1.0.0:
   version "1.0.0"
-  resolved "https://registry.yarnpkg.com/delegates/-/delegates-1.0.0.tgz#84c6e159b81904fdca59a0ef44cd870d31250f9a"
+  resolved "https://registry.npmjs.org/delegates/-/delegates-1.0.0.tgz"
   integrity sha1-hMbhWbgZBP3KWaDvRM2HDTElD5o=
 
 depd@~1.1.2:
@@ -2601,7 +2624,7 @@ file-entry-cache@^6.0.1:
 
 file-uri-to-path@1.0.0:
   version "1.0.0"
-  resolved "https://registry.yarnpkg.com/file-uri-to-path/-/file-uri-to-path-1.0.0.tgz#553a7b8446ff6f684359c445f1e37a05dacc33dd"
+  resolved "https://registry.npmjs.org/file-uri-to-path/-/file-uri-to-path-1.0.0.tgz"
   integrity sha512-0Zt+s3L7Vf1biwWZ29aARiVYLx7iMGnEUl9x33fbB/j3jR81u/O2LbqK+Bm1CDSNDKVtJ/YjwY7TUd5SkeLQLw==
 
 fill-range@^4.0.0:
@@ -2737,7 +2760,7 @@ fresh@0.5.2:
 
 fs-minipass@^1.2.5:
   version "1.2.7"
-  resolved "https://registry.yarnpkg.com/fs-minipass/-/fs-minipass-1.2.7.tgz#ccff8570841e7fe4265693da88936c55aed7f7c7"
+  resolved "https://registry.npmjs.org/fs-minipass/-/fs-minipass-1.2.7.tgz"
   integrity sha512-GWSSJGFy4e9GUeCcbIkED+bgAoFyj7XF1mV8rma3QW4NIqX9Kyx79N/PF61H5udOV3aY1IaMLs6pGbH71nlCTA==
   dependencies:
     minipass "^2.6.0"
@@ -2749,7 +2772,7 @@ fs.realpath@^1.0.0:
 
 fsevents@^2.1.2, fsevents@~2.3.1:
   version "2.3.2"
-  resolved "https://registry.npmjs.org/fsevents/-/fsevents-2.3.2.tgz"
+  resolved "https://registry.yarnpkg.com/fsevents/-/fsevents-2.3.2.tgz#8a526f78b8fdf4623b709e0b975c52c24c02fd1a"
   integrity sha512-xiqMQR4xAeHTuB9uWm+fFRcIOgKBMiOBP+eXiyT7jsgVCq1bkVygt00oASowB7EdtpOHaaPgKt812P9ab+DDKA==
 
 function-bind@^1.1.1:
@@ -2764,7 +2787,7 @@ functional-red-black-tree@^1.0.1:
 
 gauge@~2.7.3:
   version "2.7.4"
-  resolved "https://registry.yarnpkg.com/gauge/-/gauge-2.7.4.tgz#2c03405c7538c39d7eb37b317022e325fb018bf7"
+  resolved "https://registry.npmjs.org/gauge/-/gauge-2.7.4.tgz"
   integrity sha1-LANAXHU4w51+s3sxcCLjJfsBi/c=
   dependencies:
     aproba "^1.0.3"
@@ -2987,7 +3010,7 @@ has-symbols@^1.0.1, has-symbols@^1.0.2:
 
 has-unicode@^2.0.0:
   version "2.0.1"
-  resolved "https://registry.yarnpkg.com/has-unicode/-/has-unicode-2.0.1.tgz#e0e6fe6a28cf51138855e086d1691e771de2a8b9"
+  resolved "https://registry.npmjs.org/has-unicode/-/has-unicode-2.0.1.tgz"
   integrity sha1-4Ob+aijPUROIVeCG0Wkedx3iqLk=
 
 has-value@^0.3.1:
@@ -3180,7 +3203,7 @@ indent-string@^2.1.0:
 
 indy-sdk@^1.16.0:
   version "1.16.0"
-  resolved "https://registry.yarnpkg.com/indy-sdk/-/indy-sdk-1.16.0.tgz#034385ec5016388b0b52914f49d6334e372bb6c5"
+  resolved "https://registry.npmjs.org/indy-sdk/-/indy-sdk-1.16.0.tgz"
   integrity sha512-ATDzxBfHzFvHMiEXZSvmPjdswa3H4/X4npP4SV8yvzR18K/w0u/P4zp9TmEisAWA9of/hy1Fd1ziKMn+phHw+g==
   dependencies:
     bindings "^1.3.1"
@@ -3379,7 +3402,7 @@ is-finite@^1.0.0:
 
 is-fullwidth-code-point@^1.0.0:
   version "1.0.0"
-  resolved "https://registry.yarnpkg.com/is-fullwidth-code-point/-/is-fullwidth-code-point-1.0.0.tgz#ef9e31386f031a7f0d643af82fde50c457ef00cb"
+  resolved "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-1.0.0.tgz"
   integrity sha1-754xOG8DGn8NZDr4L95QxFfvAMs=
   dependencies:
     number-is-nan "^1.0.0"
@@ -4434,7 +4457,7 @@ minimist@^1.1.1, minimist@^1.1.3, minimist@^1.2.0, minimist@^1.2.5:
 
 minipass@^2.6.0, minipass@^2.8.6, minipass@^2.9.0:
   version "2.9.0"
-  resolved "https://registry.yarnpkg.com/minipass/-/minipass-2.9.0.tgz#e713762e7d3e32fed803115cf93e04bca9fcc9a6"
+  resolved "https://registry.npmjs.org/minipass/-/minipass-2.9.0.tgz"
   integrity sha512-wxfUjg9WebH+CUDX/CdbRlh5SmfZiy/hpkxaRI16Y9W56Pa75sWgd/rvFilSgrauD9NyFymP/+JFV3KwzIsJeg==
   dependencies:
     safe-buffer "^5.1.2"
@@ -4442,7 +4465,7 @@ minipass@^2.6.0, minipass@^2.8.6, minipass@^2.9.0:
 
 minizlib@^1.2.1:
   version "1.3.3"
-  resolved "https://registry.yarnpkg.com/minizlib/-/minizlib-1.3.3.tgz#2290de96818a34c29551c8a8d301216bd65a861d"
+  resolved "https://registry.npmjs.org/minizlib/-/minizlib-1.3.3.tgz"
   integrity sha512-6ZYMOEnmVsdCeTJVE0W9ZD+pVnE8h9Hma/iOwwRDsdQoePpoX56/8B6z3P9VNwppJuBKNRuFDRNRqRWexT9G9Q==
   dependencies:
     minipass "^2.9.0"
@@ -4462,7 +4485,7 @@ mkdirp@1.x, mkdirp@^1.0.4:
 
 mkdirp@^0.5.0:
   version "0.5.5"
-  resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-0.5.5.tgz#d91cefd62d1436ca0f41620e251288d420099def"
+  resolved "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.5.tgz"
   integrity sha512-NKmAlESf6jMGym1++R0Ra7wvhV+wFW63FaSOFPwRahvea0gMUcGUhVeAg/0BC0wiv9ih5NYPB1Wn1UEI1/L+xQ==
   dependencies:
     minimist "^1.2.5"
@@ -4482,6 +4505,22 @@ ms@2.1.2:
   resolved "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz"
   integrity sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==
 
+multibase@^4.0.1, multibase@^4.0.4:
+  version "4.0.4"
+  resolved "https://registry.yarnpkg.com/multibase/-/multibase-4.0.4.tgz#55ef53e6acce223c5a09341a8a3a3d973871a577"
+  integrity sha512-8/JmrdSGzlw6KTgAJCOqUBSGd1V6186i/X8dDCGy/lbCKrQ+1QB6f3HE+wPr7Tpdj4U3gutaj9jG2rNX6UpiJg==
+  dependencies:
+    "@multiformats/base-x" "^4.0.1"
+
+multihashes@^4.0.2:
+  version "4.0.2"
+  resolved "https://registry.yarnpkg.com/multihashes/-/multihashes-4.0.2.tgz#d76aeac3a302a1bed9fe1ec964fb7a22fa662283"
+  integrity sha512-xpx++1iZr4ZQHjN1mcrXS6904R36LWLxX/CBifczjtmrtCXEX623DMWOF1eiNSg+pFpiZDFVBgou/4v6ayCHSQ==
+  dependencies:
+    multibase "^4.0.1"
+    uint8arrays "^2.1.3"
+    varint "^5.0.2"
+
 mute-stream@0.0.8:
   version "0.0.8"
   resolved "https://registry.npmjs.org/mute-stream/-/mute-stream-0.0.8.tgz"
@@ -4489,7 +4528,7 @@ mute-stream@0.0.8:
 
 nan@^2.11.1:
   version "2.14.2"
-  resolved "https://registry.yarnpkg.com/nan/-/nan-2.14.2.tgz#f5376400695168f4cc694ac9393d0c9585eeea19"
+  resolved "https://registry.npmjs.org/nan/-/nan-2.14.2.tgz"
   integrity sha512-M2ufzIiINKCuDfBSAUr1vWQ+vuVcA9kqx8JJUsbQi6yf1uGRyb7HfpdfUr5qLXf3B/t8dPvcjhKMmlfnP47EzQ==
 
 nanomatch@^1.2.9:
@@ -4531,7 +4570,7 @@ node-fetch@^2.6.1:
 
 node-gyp@^4.0.0:
   version "4.0.0"
-  resolved "https://registry.yarnpkg.com/node-gyp/-/node-gyp-4.0.0.tgz#972654af4e5dd0cd2a19081b4b46fe0442ba6f45"
+  resolved "https://registry.npmjs.org/node-gyp/-/node-gyp-4.0.0.tgz"
   integrity sha512-2XiryJ8sICNo6ej8d0idXDEMKfVfFK7kekGCtJAuelGsYHQxhj13KTf95swTCN2dZ/4lTfZ84Fu31jqJEEgjWA==
   dependencies:
     glob "^7.0.3"
@@ -4573,9 +4612,16 @@ node-releases@^1.1.70:
   resolved "https://registry.npmjs.org/node-releases/-/node-releases-1.1.71.tgz"
   integrity sha512-zR6HoT6LrLCRBwukmrVbHv0EpEQjksO6GmFcZQQuCAy139BEsoVKPYnf3jongYW83fAa1torLGYwxxky/p28sg==
 
+nofilter@^2.0.3:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/nofilter/-/nofilter-2.0.3.tgz#f5460f3cb33147005883e3f5d4476239501fa187"
+  integrity sha512-FbuXC+lK+GU2+63D1kC1ETiZo+Z7SIi7B+mxKTCH1byrh6WFvfBCN/wpherFz0a0bjGd7EKTst/cz0yLeNngug==
+  dependencies:
+    "@cto.af/textdecoder" "^0.0.0"
+
 "nopt@2 || 3":
   version "3.0.6"
-  resolved "https://registry.yarnpkg.com/nopt/-/nopt-3.0.6.tgz#c6465dbf08abcd4db359317f79ac68a646b28ff9"
+  resolved "https://registry.npmjs.org/nopt/-/nopt-3.0.6.tgz"
   integrity sha1-xkZdvwirzU2zWTF/eaxopkayj/k=
   dependencies:
     abbrev "1"
@@ -4643,7 +4689,7 @@ npm-run-path@^4.0.0, npm-run-path@^4.0.1:
 
 "npmlog@0 || 1 || 2 || 3 || 4":
   version "4.1.2"
-  resolved "https://registry.yarnpkg.com/npmlog/-/npmlog-4.1.2.tgz#08a7f2a8bf734604779a9efa4ad5cc717abb954b"
+  resolved "https://registry.npmjs.org/npmlog/-/npmlog-4.1.2.tgz"
   integrity sha512-2uUqazuKlTaSI/dC8AzicUck7+IrEaOnN/e0jd3Xtt1KcGpwx30v50mL7oPyr/h9bL3E4aZccVwpwP+5W9Vjkg==
   dependencies:
     are-we-there-yet "~1.1.2"
@@ -4653,7 +4699,7 @@ npm-run-path@^4.0.0, npm-run-path@^4.0.1:
 
 number-is-nan@^1.0.0:
   version "1.0.1"
-  resolved "https://registry.yarnpkg.com/number-is-nan/-/number-is-nan-1.0.1.tgz#097b602b53422a522c1afb8790318336941a011d"
+  resolved "https://registry.npmjs.org/number-is-nan/-/number-is-nan-1.0.1.tgz"
   integrity sha1-CXtgK1NCKlIsGvuHkDGDNpQaAR0=
 
 nwsapi@^2.2.0:
@@ -4776,7 +4822,7 @@ ora@5.4.0:
 
 os-homedir@^1.0.0:
   version "1.0.2"
-  resolved "https://registry.yarnpkg.com/os-homedir/-/os-homedir-1.0.2.tgz#ffbc4988336e0e833de0c168c7ef152121aa7fb3"
+  resolved "https://registry.npmjs.org/os-homedir/-/os-homedir-1.0.2.tgz"
   integrity sha1-/7xJiDNuDoM94MFox+8VISGqf7M=
 
 os-name@4.0.0:
@@ -4794,7 +4840,7 @@ os-tmpdir@^1.0.0, os-tmpdir@~1.0.2:
 
 osenv@0:
   version "0.1.5"
-  resolved "https://registry.yarnpkg.com/osenv/-/osenv-0.1.5.tgz#85cdfafaeb28e8677f416e287592b5f3f49ea410"
+  resolved "https://registry.npmjs.org/osenv/-/osenv-0.1.5.tgz"
   integrity sha512-0CWcCECdMVc2Rw3U5w9ZjqX6ga6ubk1xDVKxtBQPK7wis/0F2r9T6k4ydGYhecl7YUBxBVxhL5oisPsNxAPe2g==
   dependencies:
     os-homedir "^1.0.0"
@@ -5083,7 +5129,7 @@ pretty-format@^26.0.0, pretty-format@^26.6.2:
 
 process-nextick-args@~2.0.0:
   version "2.0.1"
-  resolved "https://registry.yarnpkg.com/process-nextick-args/-/process-nextick-args-2.0.1.tgz#7820d9b16120cc55ca9ae7792680ae7dba6d7fe2"
+  resolved "https://registry.npmjs.org/process-nextick-args/-/process-nextick-args-2.0.1.tgz"
   integrity sha512-3ouUOpQhtgrbOa17J7+uxOTpITYWaGP7/AhoR3+A+/1e9skrzelGi/dXzEYyvbxubEF6Wn2ypscTKiKJFFn1ag==
 
 progress@^2.0.0:
@@ -5251,7 +5297,7 @@ read-pkg@^5.2.0:
 
 readable-stream@^2.0.6:
   version "2.3.7"
-  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-2.3.7.tgz#1eca1cf711aef814c04f62252a36a62f6cb23b57"
+  resolved "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.7.tgz"
   integrity sha512-Ebho8K4jIbHAxnuxi7o42OrZgF/ZTNcsZj6nRKyUmkhLFq8CHItp/fy6hQZuZmP/n3yZ9VBUbp4zz/mX8hmYPw==
   dependencies:
     core-util-is "~1.0.0"
@@ -5618,7 +5664,7 @@ semver@^6.0.0, semver@^6.2.0, semver@^6.3.0:
 
 semver@~5.3.0:
   version "5.3.0"
-  resolved "https://registry.yarnpkg.com/semver/-/semver-5.3.0.tgz#9b2ce5d3de02d17c6012ad326aa6b4d0cf54f94f"
+  resolved "https://registry.npmjs.org/semver/-/semver-5.3.0.tgz"
   integrity sha1-myzl094C0XxgEq0yaqa00M9U+U8=
 
 send@0.17.1:
@@ -5913,7 +5959,7 @@ string-length@^4.0.1:
 
 string-width@^1.0.1:
   version "1.0.2"
-  resolved "https://registry.yarnpkg.com/string-width/-/string-width-1.0.2.tgz#118bdf5b8cdc51a2a7e70d211e07e2b0b9b107d3"
+  resolved "https://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz"
   integrity sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=
   dependencies:
     code-point-at "^1.0.0"
@@ -5922,7 +5968,7 @@ string-width@^1.0.1:
 
 "string-width@^1.0.2 || 2":
   version "2.1.1"
-  resolved "https://registry.yarnpkg.com/string-width/-/string-width-2.1.1.tgz#ab93f27a8dc13d28cac815c462143a6d9012ae9e"
+  resolved "https://registry.npmjs.org/string-width/-/string-width-2.1.1.tgz"
   integrity sha512-nOqH59deCq9SRHlxq1Aw85Jnt4w6KvLKqWVik6oA9ZklXLNIOlqg4F2yrT1MVaTjAqvVwdfeZ7w7aCvJD7ugkw==
   dependencies:
     is-fullwidth-code-point "^2.0.0"
@@ -5980,21 +6026,21 @@ string_decoder@^1.1.1:
 
 string_decoder@~1.1.1:
   version "1.1.1"
-  resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-1.1.1.tgz#9cf1611ba62685d7030ae9e4ba34149c3af03fc8"
+  resolved "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz"
   integrity sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==
   dependencies:
     safe-buffer "~5.1.0"
 
 strip-ansi@^3.0.0, strip-ansi@^3.0.1:
   version "3.0.1"
-  resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-3.0.1.tgz#6a385fb8853d952d5ff05d0e8aaf94278dc63dcf"
+  resolved "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz"
   integrity sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=
   dependencies:
     ansi-regex "^2.0.0"
 
 strip-ansi@^4.0.0:
   version "4.0.0"
-  resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-4.0.0.tgz#a8479022eb1ac368a871389b635262c505ee368f"
+  resolved "https://registry.npmjs.org/strip-ansi/-/strip-ansi-4.0.0.tgz"
   integrity sha1-qEeQIusaw2iocTibY1JixQXuNo8=
   dependencies:
     ansi-regex "^3.0.0"
@@ -6101,7 +6147,7 @@ table@^6.0.4:
 
 tar@^4.4.8:
   version "4.4.13"
-  resolved "https://registry.yarnpkg.com/tar/-/tar-4.4.13.tgz#43b364bc52888d555298637b10d60790254ab525"
+  resolved "https://registry.npmjs.org/tar/-/tar-4.4.13.tgz"
   integrity sha512-w2VwSrBoHa5BsSyH+KxEqeQBAllHhccyMFVHtGtdMpF4W7IRWfZjFiQceJPChOeTsSDVUpER2T8FA93pr0L+QA==
   dependencies:
     chownr "^1.1.1"
@@ -6389,6 +6435,13 @@ typescript@^4.2.3:
   resolved "https://registry.npmjs.org/typescript/-/typescript-4.2.4.tgz"
   integrity sha512-V+evlYHZnQkaz8TRBuxTA92yZBPotr5H+WhQ7bD3hZUndx5tGOa1fuCgeSjxAzM1RiN5IzvadIXTVefuuwZCRg==
 
+uint8arrays@^2.1.3:
+  version "2.1.5"
+  resolved "https://registry.npmjs.org/uint8arrays/-/uint8arrays-2.1.5.tgz"
+  integrity sha512-CSR7AO+4AHUeSOnZ/NBNCElDeWfRh9bXtOck27083kc7SznmmHIhNEkEOCQOn0wvrIMjS3IH0TNLR16vuc46mA==
+  dependencies:
+    multibase "^4.0.1"
+
 unbox-primitive@^1.0.0:
   version "1.0.1"
   resolved "https://registry.npmjs.org/unbox-primitive/-/unbox-primitive-1.0.1.tgz"
@@ -6535,6 +6588,11 @@ validator@^13.5.2:
   resolved "https://registry.npmjs.org/validator/-/validator-13.5.2.tgz"
   integrity sha512-mD45p0rvHVBlY2Zuy3F3ESIe1h5X58GPfAtslBjY7EtTqGquZTj+VX/J4RnHWN8FKq0C9WRVt1oWAcytWRuYLQ==
 
+varint@^5.0.2:
+  version "5.0.2"
+  resolved "https://registry.npmjs.org/varint/-/varint-5.0.2.tgz"
+  integrity sha512-lKxKYG6H03yCZUpAGOPOsMcGxd1RHCu1iKvEHYDPmTyq2HueGhD73ssNBqqQWfvYs04G9iUFRvmAVLW20Jw6ow==
+
 vary@^1, vary@~1.1.2:
   version "1.1.2"
   resolved "https://registry.npmjs.org/vary/-/vary-1.1.2.tgz"
@@ -6640,7 +6698,7 @@ which@^2.0.1, which@^2.0.2:
 
 wide-align@^1.1.0:
   version "1.1.3"
-  resolved "https://registry.yarnpkg.com/wide-align/-/wide-align-1.1.3.tgz#ae074e6bdc0c14a431e804e624549c633b000457"
+  resolved "https://registry.npmjs.org/wide-align/-/wide-align-1.1.3.tgz"
   integrity sha512-QGkOQc8XL6Bt5PwnsExKBPuMKBxnGxWWW3fU55Xt4feHozMUhdUMaBCk290qpm/wG5u/RSKzwdAC4i51YigihA==
   dependencies:
     string-width "^1.0.2 || 2"
@@ -6729,7 +6787,7 @@ y18n@^4.0.0:
 
 yallist@^3.0.0, yallist@^3.0.3:
   version "3.1.1"
-  resolved "https://registry.yarnpkg.com/yallist/-/yallist-3.1.1.tgz#dbb7daf9bfd8bac9ab45ebf602b8cbad0d5d08fd"
+  resolved "https://registry.npmjs.org/yallist/-/yallist-3.1.1.tgz"
   integrity sha512-a4UGQaWPH59mOXUYnAG2ewncQS4i4F43Tv3JoAM+s2VDAmS9NsK8GpDMLrCHPksFT7h3K6TOoUNn2pb7RoXx4g==
 
 yallist@^4.0.0: