diff --git a/Cargo.lock b/Cargo.lock
index 17dbaddaf45..1aacd877fe8 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2076,6 +2076,7 @@ dependencies = [
  "near-telemetry",
  "near-test-contracts",
  "neard",
+ "node-runtime",
  "tempfile",
 ]
 
@@ -3748,9 +3749,11 @@ dependencies = [
  "base64 0.11.0",
  "borsh",
  "byteorder",
+ "csv",
  "ethereum-types 0.11.0",
  "hex",
  "indicatif 0.13.0",
+ "lazy-static-include",
  "lazy_static",
  "log",
  "near-chain-configs",
@@ -5328,6 +5331,15 @@ version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "213701ba3370744dcd1a12960caa4843b3d68b4d1c0a5d575e0d65b2ee9d16c0"
 
+[[package]]
+name = "storage-usage-delta-calculator"
+version = "0.1.0"
+dependencies = [
+ "near-chain-configs",
+ "near-primitives",
+ "node-runtime",
+]
+
 [[package]]
 name = "store-validator"
 version = "0.1.0"
diff --git a/Cargo.toml b/Cargo.toml
index 8fd5c4e1225..bd1b0fb4726 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -44,7 +44,8 @@ members = [
     "genesis-tools/keypair-generator",
     "tools/restaked",
     "tools/indexer/example",
-    "tools/delay_detector"
+    "tools/delay_detector",
+    "utils/storage-usage-delta-calculator"
 ]
 
 [dev-dependencies]
@@ -114,7 +115,7 @@ protocol_feature_alt_bn128 = ["neard/protocol_feature_alt_bn128", "testlib/proto
 protocol_feature_block_header_v3 = ["near-primitives/protocol_feature_block_header_v3", "near-chain/protocol_feature_block_header_v3", "neard/protocol_feature_block_header_v3"]
 protocol_feature_tx_size_limit = ["near-primitives/protocol_feature_tx_size_limit", "node-runtime/protocol_feature_tx_size_limit", "neard/protocol_feature_tx_size_limit"]
 protocol_feature_allow_create_account_on_delete = ["testlib/protocol_feature_allow_create_account_on_delete", "near-primitives/protocol_feature_allow_create_account_on_delete", "node-runtime/protocol_feature_allow_create_account_on_delete", "neard/protocol_feature_allow_create_account_on_delete"]
-protocol_feature_add_account_versions = ["near-primitives/protocol_feature_add_account_versions"]
+protocol_feature_add_account_versions = ["near-primitives/protocol_feature_add_account_versions", "neard/protocol_feature_add_account_versions", "runtime-params-estimator/protocol_feature_add_account_versions"]
 
 # enable this to build neard with wasmer 1.0 runner
 # now if none of wasmer0_default, wasmer1_default or wasmtime_default is enabled, wasmer0 would be default
diff --git a/chain/chain/src/test_utils.rs b/chain/chain/src/test_utils.rs
index 0e9b35a83f5..0344a0da895 100644
--- a/chain/chain/src/test_utils.rs
+++ b/chain/chain/src/test_utils.rs
@@ -12,7 +12,8 @@ use tracing::debug;
 use near_chain_primitives::{Error, ErrorKind};
 use near_crypto::{KeyType, PublicKey, SecretKey, Signature};
 use near_pool::types::PoolIterator;
-use near_primitives::account::{AccessKey, Account};
+use near_primitives::access_key::AccessKey;
+use near_primitives::account::Account;
 use near_primitives::challenge::ChallengesResult;
 use near_primitives::epoch_manager::block_info::BlockInfo;
 use near_primitives::epoch_manager::epoch_info::EpochInfo;
@@ -809,6 +810,7 @@ impl RuntimeAdapter for KeyValueRuntime {
                         0,
                         CryptoHash::default(),
                         0,
+                        PROTOCOL_VERSION,
                     )
                     .into(),
                 ),
diff --git a/chain/client/tests/challenges.rs b/chain/client/tests/challenges.rs
index 2420f43eb0c..9b028cefdaf 100644
--- a/chain/client/tests/challenges.rs
+++ b/chain/client/tests/challenges.rs
@@ -403,6 +403,7 @@ fn test_verify_chunk_invalid_state_challenge() {
         let merkle_proofs = Block::compute_chunk_headers_root(block.chunks().iter()).1;
         assert_eq!(prev_merkle_proofs[0], challenge_body.prev_merkle_proof);
         assert_eq!(merkle_proofs[0], challenge_body.merkle_proof);
+        #[cfg(not(feature = "protocol_feature_add_account_versions"))]
         assert_eq!(
             challenge_body.partial_state.0,
             vec![
@@ -420,6 +421,24 @@ fn test_verify_chunk_invalid_state_challenge() {
                 ]
             ],
         );
+        #[cfg(feature = "protocol_feature_add_account_versions")]
+        assert_eq!(
+            challenge_body.partial_state.0,
+            vec![
+                vec![
+                    1, 5, 0, 197, 185, 48, 117, 208, 162, 58, 178, 211, 174, 224, 17, 151, 175,
+                    104, 50, 193, 73, 241, 135, 170, 42, 77, 144, 147, 221, 252, 5, 35, 120, 151,
+                    31, 171, 30, 7, 228, 175, 99, 17, 113, 5, 94, 136, 200, 39, 136, 37, 110, 166,
+                    241, 148, 128, 55, 131, 173, 97, 98, 201, 68, 82, 244, 223, 70, 86, 164, 5, 0,
+                    0, 0, 0, 0, 0
+                ],
+                vec![
+                    3, 1, 0, 0, 0, 16, 63, 153, 161, 236, 209, 114, 108, 112, 213, 218, 218, 180,
+                    13, 34, 58, 16, 28, 70, 130, 240, 120, 187, 247, 141, 141, 132, 82, 113, 80,
+                    140, 82, 144, 216, 5, 0, 0, 0, 0, 0, 0
+                ]
+            ],
+        );
     }
     let challenge =
         Challenge::produce(ChallengeBody::ChunkState(challenge_body), &validator_signer);
diff --git a/chain/client/tests/process_blocks.rs b/chain/client/tests/process_blocks.rs
index 9cf8d5a1ffd..8b9fe210c33 100644
--- a/chain/client/tests/process_blocks.rs
+++ b/chain/client/tests/process_blocks.rs
@@ -2750,7 +2750,7 @@ fn test_congestion_receipt_execution() {
 mod access_key_nonce_range_tests {
     use super::*;
     use near_client::test_utils::create_chunk_with_transactions;
-    use near_primitives::account::AccessKey;
+    use near_primitives::access_key::AccessKey;
 
     /// Test that duplicate transactions are properly rejected.
     #[test]
diff --git a/chain/jsonrpc/tests/rpc_query.rs b/chain/jsonrpc/tests/rpc_query.rs
index 694e92da10d..00047095689 100644
--- a/chain/jsonrpc/tests/rpc_query.rs
+++ b/chain/jsonrpc/tests/rpc_query.rs
@@ -12,7 +12,7 @@ use near_jsonrpc_primitives::types::query::QueryResponseKind;
 use near_jsonrpc_primitives::types::validator::RpcValidatorsOrderedRequest;
 use near_logger_utils::init_test_logger;
 use near_network::test_utils::WaitOrTimeout;
-use near_primitives::account::{AccessKey, AccessKeyPermission};
+use near_primitives::access_key::{AccessKey, AccessKeyPermission};
 use near_primitives::hash::CryptoHash;
 use near_primitives::types::{BlockId, BlockReference, ShardId, SyncCheckpoint};
 use near_primitives::views::QueryRequest;
diff --git a/chain/rosetta-rpc/src/adapters/mod.rs b/chain/rosetta-rpc/src/adapters/mod.rs
index ea90704976e..abfdb401133 100644
--- a/chain/rosetta-rpc/src/adapters/mod.rs
+++ b/chain/rosetta-rpc/src/adapters/mod.rs
@@ -698,7 +698,7 @@ impl std::convert::TryFrom<Vec<crate::models::Operation>> for NearActions {
 
                     actions.push(
                         near_primitives::transaction::AddKeyAction {
-                            access_key: near_primitives::account::AccessKey::full_access(),
+                            access_key: near_primitives::access_key::AccessKey::full_access(),
                             public_key,
                         }
                         .into(),
@@ -1015,7 +1015,7 @@ mod tests {
         }
         .into()];
         let add_key_actions = vec![near_primitives::transaction::AddKeyAction {
-            access_key: near_primitives::account::AccessKey::full_access(),
+            access_key: near_primitives::access_key::AccessKey::full_access(),
             public_key: near_crypto::SecretKey::from_random(near_crypto::KeyType::ED25519)
                 .public_key(),
         }
diff --git a/chain/rosetta-rpc/src/lib.rs b/chain/rosetta-rpc/src/lib.rs
index d150dc8b79c..5d98e69b7ef 100644
--- a/chain/rosetta-rpc/src/lib.rs
+++ b/chain/rosetta-rpc/src/lib.rs
@@ -15,6 +15,7 @@ use near_chain_configs::Genesis;
 use near_client::{ClientActor, ViewClientActor};
 use near_primitives::borsh::BorshDeserialize;
 use near_primitives::serialize::BaseEncode;
+use near_primitives::views::AccountView;
 
 pub use config::RosettaRpcConfig;
 
@@ -376,7 +377,13 @@ async fn account_balance(
             Err(crate::errors::ErrorKind::NotFound(_)) => (
                 block.header.hash,
                 block.header.height,
-                near_primitives::account::Account::new(0, 0, Default::default(), 0).into(),
+                AccountView {
+                    amount: 0,
+                    locked: 0,
+                    code_hash: Default::default(),
+                    storage_usage: 0,
+                    storage_paid_at: 0,
+                },
             ),
             Err(err) => return Err(err.into()),
         };
diff --git a/core/chain-configs/src/genesis_config.rs b/core/chain-configs/src/genesis_config.rs
index 755dd1f77ff..e1f5af9d0b3 100644
--- a/core/chain-configs/src/genesis_config.rs
+++ b/core/chain-configs/src/genesis_config.rs
@@ -237,6 +237,11 @@ impl GenesisConfig {
             })
             .collect()
     }
+
+    /// Returns true iff chain_id is mainnet
+    pub fn is_mainnet(&self) -> bool {
+        self.chain_id.as_str() == "mainnet"
+    }
 }
 
 impl GenesisRecords {
diff --git a/core/primitives-core/Cargo.toml b/core/primitives-core/Cargo.toml
index e4747b16ff6..59e4e224a36 100644
--- a/core/primitives-core/Cargo.toml
+++ b/core/primitives-core/Cargo.toml
@@ -25,7 +25,6 @@ lazy_static = "1.4"
 [features]
 default = []
 costs_counting = []
-protocol_feature_add_account_versions = []
 protocol_feature_evm = []
 protocol_feature_alt_bn128 = []
 protocol_feature_tx_size_limit = []
diff --git a/core/primitives-core/src/access_key.rs b/core/primitives-core/src/access_key.rs
new file mode 100644
index 00000000000..267a1a3ba9b
--- /dev/null
+++ b/core/primitives-core/src/access_key.rs
@@ -0,0 +1,70 @@
+use borsh::{BorshDeserialize, BorshSerialize};
+use serde::{Deserialize, Serialize};
+
+use crate::serialize::option_u128_dec_format;
+use crate::types::{AccountId, Balance, Nonce};
+
+/// Access key provides limited access to an account. Each access key belongs to some account and
+/// is identified by a unique (within the account) public key. One account may have large number of
+/// access keys. Access keys allow to act on behalf of the account by restricting transactions
+/// that can be issued.
+/// `account_id,public_key` is a key in the state
+#[derive(
+    BorshSerialize, BorshDeserialize, Serialize, Deserialize, PartialEq, Eq, Hash, Clone, Debug,
+)]
+pub struct AccessKey {
+    /// The nonce for this access key.
+    /// NOTE: In some cases the access key needs to be recreated. If the new access key reuses the
+    /// same public key, the nonce of the new access key should be equal to the nonce of the old
+    /// access key. It's required to avoid replaying old transactions again.
+    pub nonce: Nonce,
+
+    /// Defines permissions for this access key.
+    pub permission: AccessKeyPermission,
+}
+
+impl AccessKey {
+    pub const ACCESS_KEY_NONCE_RANGE_MULTIPLIER: u64 = 1_000_000;
+
+    pub fn full_access() -> Self {
+        Self { nonce: 0, permission: AccessKeyPermission::FullAccess }
+    }
+}
+
+/// Defines permissions for AccessKey
+#[derive(
+    BorshSerialize, BorshDeserialize, Serialize, Deserialize, PartialEq, Eq, Hash, Clone, Debug,
+)]
+pub enum AccessKeyPermission {
+    FunctionCall(FunctionCallPermission),
+
+    /// Grants full access to the account.
+    /// NOTE: It's used to replace account-level public keys.
+    FullAccess,
+}
+
+/// Grants limited permission to make transactions with FunctionCallActions
+/// The permission can limit the allowed balance to be spent on the prepaid gas.
+/// It also restrict the account ID of the receiver for this function call.
+/// It also can restrict the method name for the allowed function calls.
+#[derive(
+    BorshSerialize, BorshDeserialize, Serialize, Deserialize, PartialEq, Eq, Hash, Clone, Debug,
+)]
+pub struct FunctionCallPermission {
+    /// Allowance is a balance limit to use by this access key to pay for function call gas and
+    /// transaction fees. When this access key is used, both account balance and the allowance is
+    /// decreased by the same value.
+    /// `None` means unlimited allowance.
+    /// NOTE: To change or increase the allowance, the old access key needs to be deleted and a new
+    /// access key should be created.
+    #[serde(with = "option_u128_dec_format")]
+    pub allowance: Option<Balance>,
+
+    /// The access key only allows transactions with the given receiver's account id.
+    pub receiver_id: AccountId,
+
+    /// A list of method names that can be used. The access key only allows transactions with the
+    /// function call of one of the given method names.
+    /// Empty list means any method name can be used.
+    pub method_names: Vec<String>,
+}
diff --git a/core/primitives-core/src/lib.rs b/core/primitives-core/src/lib.rs
index 3996b93c18b..3308fa7b636 100644
--- a/core/primitives-core/src/lib.rs
+++ b/core/primitives-core/src/lib.rs
@@ -1,7 +1,7 @@
 pub use borsh;
 pub use num_rational;
 
-pub mod account;
+pub mod access_key;
 pub mod config;
 pub mod contract;
 pub mod hash;
diff --git a/core/primitives/Cargo.toml b/core/primitives/Cargo.toml
index 2ae8f879af9..138bc18325b 100644
--- a/core/primitives/Cargo.toml
+++ b/core/primitives/Cargo.toml
@@ -41,7 +41,7 @@ near-rpc-error-macro = { path = "../../tools/rpctypegen/macro" }
 [features]
 default = ["jemallocator"]
 dump_errors_schema = ["near-rpc-error-macro/dump_errors_schema"]
-protocol_feature_add_account_versions = ["near-primitives-core/protocol_feature_add_account_versions"]
+protocol_feature_add_account_versions = []
 protocol_feature_evm = ["near-primitives-core/protocol_feature_evm"]
 protocol_feature_block_header_v3 = []
 protocol_feature_alt_bn128 = ["near-primitives-core/protocol_feature_alt_bn128", "near-vm-errors/protocol_feature_alt_bn128"]
diff --git a/core/primitives-core/src/account.rs b/core/primitives/src/account.rs
similarity index 62%
rename from core/primitives-core/src/account.rs
rename to core/primitives/src/account.rs
index 8b16e7b239a..7f314ce8d49 100644
--- a/core/primitives-core/src/account.rs
+++ b/core/primitives/src/account.rs
@@ -1,9 +1,11 @@
+#[cfg(feature = "protocol_feature_add_account_versions")]
+use crate::checked_feature;
+use crate::serialize::u128_dec_format_compatible;
 use borsh::{BorshDeserialize, BorshSerialize};
+use near_primitives_core::hash::CryptoHash;
+use near_primitives_core::types::{Balance, ProtocolVersion, StorageUsage};
+use serde;
 use serde::{Deserialize, Serialize};
-
-use crate::hash::CryptoHash;
-use crate::serialize::{option_u128_dec_format, u128_dec_format_compatible};
-use crate::types::{AccountId, Balance, Nonce, StorageUsage};
 #[cfg(feature = "protocol_feature_add_account_versions")]
 use std::io;
 
@@ -12,7 +14,11 @@ use std::io;
     BorshSerialize, BorshDeserialize, Serialize, Deserialize, PartialEq, Eq, Debug, Clone, Copy,
 )]
 pub enum AccountVersion {
+    /// Versioning release
     V1,
+    /// Recalculated storage usage due to previous bug, see
+    /// https://github.com/near/nearcore/issues/3824
+    V2,
 }
 
 #[cfg(feature = "protocol_feature_add_account_versions")]
@@ -55,14 +61,25 @@ impl Account {
         locked: Balance,
         code_hash: CryptoHash,
         storage_usage: StorageUsage,
+        protocol_version: ProtocolVersion,
     ) -> Self {
-        Account {
+        #[cfg(not(feature = "protocol_feature_add_account_versions"))]
+        let _ = protocol_version;
+        Self {
             amount,
             locked,
             code_hash,
             storage_usage,
             #[cfg(feature = "protocol_feature_add_account_versions")]
-            version: AccountVersion::V1,
+            version: if checked_feature!(
+                "protocol_feature_add_account_versions",
+                AccountVersions,
+                protocol_version
+            ) {
+                AccountVersion::V2
+            } else {
+                AccountVersion::V1
+            },
         }
     }
 
@@ -128,6 +145,16 @@ struct LegacyAccount {
     storage_usage: StorageUsage,
 }
 
+#[cfg(feature = "protocol_feature_add_account_versions")]
+#[derive(BorshSerialize, BorshDeserialize)]
+struct SerializableAccount {
+    amount: Balance,
+    locked: Balance,
+    code_hash: CryptoHash,
+    storage_usage: StorageUsage,
+    version: AccountVersion,
+}
+
 #[cfg(feature = "protocol_feature_add_account_versions")]
 impl BorshDeserialize for Account {
     fn deserialize(buf: &mut &[u8]) -> Result<Self, io::Error> {
@@ -143,7 +170,14 @@ impl BorshDeserialize for Account {
                 version: AccountVersion::V1,
             })
         } else {
-            unreachable!();
+            let deserialized_account = SerializableAccount::deserialize(buf)?;
+            Ok(Account {
+                amount: deserialized_account.amount,
+                locked: deserialized_account.locked,
+                code_hash: deserialized_account.code_hash,
+                storage_usage: deserialized_account.storage_usage,
+                version: deserialized_account.version,
+            })
         }
     }
 }
@@ -159,91 +193,73 @@ impl BorshSerialize for Account {
                 storage_usage: self.storage_usage,
             }
             .serialize(writer),
+            _ => SerializableAccount {
+                amount: self.amount,
+                locked: self.locked,
+                code_hash: self.code_hash,
+                storage_usage: self.storage_usage,
+                version: self.version,
+            }
+            .serialize(writer),
         }
     }
 }
 
-/// Access key provides limited access to an account. Each access key belongs to some account and
-/// is identified by a unique (within the account) public key. One account may have large number of
-/// access keys. Access keys allow to act on behalf of the account by restricting transactions
-/// that can be issued.
-/// `account_id,public_key` is a key in the state
-#[derive(
-    BorshSerialize, BorshDeserialize, Serialize, Deserialize, PartialEq, Eq, Hash, Clone, Debug,
-)]
-pub struct AccessKey {
-    /// The nonce for this access key.
-    /// NOTE: In some cases the access key needs to be recreated. If the new access key reuses the
-    /// same public key, the nonce of the new access key should be equal to the nonce of the old
-    /// access key. It's required to avoid replaying old transactions again.
-    pub nonce: Nonce,
-
-    /// Defines permissions for this access key.
-    pub permission: AccessKeyPermission,
-}
-
-impl AccessKey {
-    pub const ACCESS_KEY_NONCE_RANGE_MULTIPLIER: u64 = 1_000_000;
-
-    pub fn full_access() -> Self {
-        Self { nonce: 0, permission: AccessKeyPermission::FullAccess }
-    }
-}
-
-/// Defines permissions for AccessKey
-#[derive(
-    BorshSerialize, BorshDeserialize, Serialize, Deserialize, PartialEq, Eq, Hash, Clone, Debug,
-)]
-pub enum AccessKeyPermission {
-    FunctionCall(FunctionCallPermission),
-
-    /// Grants full access to the account.
-    /// NOTE: It's used to replace account-level public keys.
-    FullAccess,
-}
-
-/// Grants limited permission to make transactions with FunctionCallActions
-/// The permission can limit the allowed balance to be spent on the prepaid gas.
-/// It also restrict the account ID of the receiver for this function call.
-/// It also can restrict the method name for the allowed function calls.
-#[derive(
-    BorshSerialize, BorshDeserialize, Serialize, Deserialize, PartialEq, Eq, Hash, Clone, Debug,
-)]
-pub struct FunctionCallPermission {
-    /// Allowance is a balance limit to use by this access key to pay for function call gas and
-    /// transaction fees. When this access key is used, both account balance and the allowance is
-    /// decreased by the same value.
-    /// `None` means unlimited allowance.
-    /// NOTE: To change or increase the allowance, the old access key needs to be deleted and a new
-    /// access key should be created.
-    #[serde(with = "option_u128_dec_format")]
-    pub allowance: Option<Balance>,
-
-    /// The access key only allows transactions with the given receiver's account id.
-    pub receiver_id: AccountId,
-
-    /// A list of method names that can be used. The access key only allows transactions with the
-    /// function call of one of the given method names.
-    /// Empty list means any method name can be used.
-    pub method_names: Vec<String>,
-}
-
 #[cfg(test)]
 mod tests {
+    use crate::account::Account;
+    #[cfg(feature = "protocol_feature_add_account_versions")]
+    use crate::account::{AccountVersion, LegacyAccount};
+    #[cfg(feature = "protocol_feature_add_account_versions")]
+    use crate::borsh::BorshDeserialize;
+    use crate::hash::CryptoHash;
+    #[cfg(feature = "protocol_feature_add_account_versions")]
+    use crate::version::ProtocolFeature;
+    #[cfg(not(feature = "protocol_feature_add_account_versions"))]
+    use crate::version::PROTOCOL_VERSION;
     use borsh::BorshSerialize;
-
-    use crate::hash::hash;
-    use crate::serialize::to_base;
-
-    use super::*;
+    use near_primitives_core::hash::hash;
+    use near_primitives_core::serialize::to_base;
 
     #[test]
     fn test_account_serialization() {
-        let acc = Account::new(1_000_000, 1_000_000, CryptoHash::default(), 100);
+        #[cfg(feature = "protocol_feature_add_account_versions")]
+        let acc = Account::new(
+            1_000_000,
+            1_000_000,
+            CryptoHash::default(),
+            100,
+            ProtocolFeature::AccountVersions.protocol_version() - 1,
+        );
+        #[cfg(not(feature = "protocol_feature_add_account_versions"))]
+        let acc = Account::new(1_000_000, 1_000_000, CryptoHash::default(), 100, PROTOCOL_VERSION);
         let bytes = acc.try_to_vec().unwrap();
         assert_eq!(to_base(&hash(&bytes)), "EVk5UaxBe8LQ8r8iD5EAxVBs6TJcMDKqyH7PBuho6bBJ");
     }
 
+    #[test]
+    #[cfg(feature = "protocol_feature_add_account_versions")]
+    fn test_account_size() {
+        let new_account = Account::new(
+            0,
+            0,
+            CryptoHash::default(),
+            0,
+            ProtocolFeature::AccountVersions.protocol_version(),
+        );
+        let old_account = Account::new(
+            0,
+            0,
+            CryptoHash::default(),
+            0,
+            ProtocolFeature::AccountVersions.protocol_version() - 1,
+        );
+        let new_bytes = new_account.try_to_vec().unwrap();
+        let old_bytes = old_account.try_to_vec().unwrap();
+        assert!(new_bytes.len() > old_bytes.len());
+        assert_eq!(old_bytes.len(), std::mem::size_of::<LegacyAccount>());
+    }
+
     #[test]
     #[cfg(feature = "protocol_feature_add_account_versions")]
     fn test_account_deserialization() {
diff --git a/core/primitives/src/lib.rs b/core/primitives/src/lib.rs
index db644981910..d795942a448 100644
--- a/core/primitives/src/lib.rs
+++ b/core/primitives/src/lib.rs
@@ -1,7 +1,8 @@
 pub use near_primitives_core::borsh;
 pub use near_primitives_core::num_rational;
 
-pub use near_primitives_core::account;
+pub use near_primitives_core::access_key;
+pub mod account;
 pub mod block;
 pub mod block_header;
 pub mod challenge;
diff --git a/core/primitives/src/runtime/apply_state.rs b/core/primitives/src/runtime/apply_state.rs
index e1dfefd2a91..e4cc53030bb 100644
--- a/core/primitives/src/runtime/apply_state.rs
+++ b/core/primitives/src/runtime/apply_state.rs
@@ -41,4 +41,7 @@ pub struct ApplyState {
     pub evm_chain_id: u64,
     /// Data collected from making a contract call
     pub profile: crate::profile::ProfileData,
+    /// True iff this ApplyState is on mainnet
+    #[cfg(feature = "protocol_feature_add_account_versions")]
+    pub is_mainnet: bool,
 }
diff --git a/core/primitives/src/state_record.rs b/core/primitives/src/state_record.rs
index 2b00969367a..a7225c86d3e 100644
--- a/core/primitives/src/state_record.rs
+++ b/core/primitives/src/state_record.rs
@@ -4,7 +4,8 @@ use std::fmt::{Display, Formatter};
 
 use near_crypto::PublicKey;
 
-use crate::account::{AccessKey, Account};
+use crate::access_key::AccessKey;
+use crate::account::Account;
 use crate::hash::{hash, CryptoHash};
 use crate::receipt::{Receipt, ReceivedData};
 use crate::serialize::{base64_format, option_base64_format};
diff --git a/core/primitives/src/test_utils.rs b/core/primitives/src/test_utils.rs
index 71f4f9ea276..499d316f7c9 100644
--- a/core/primitives/src/test_utils.rs
+++ b/core/primitives/src/test_utils.rs
@@ -4,7 +4,7 @@ use num_rational::Rational;
 
 use near_crypto::{EmptySigner, PublicKey, Signature, Signer};
 
-use crate::account::{AccessKey, AccessKeyPermission, Account};
+use crate::account::Account;
 use crate::block::Block;
 use crate::block_header::BlockHeader;
 #[cfg(not(feature = "protocol_feature_block_header_v3"))]
@@ -25,9 +25,10 @@ use crate::types::{AccountId, Balance, BlockHeight, EpochId, EpochInfoProvider,
 use crate::validator_signer::ValidatorSigner;
 use crate::version::PROTOCOL_VERSION;
 use crate::views::FinalExecutionStatus;
+use near_primitives_core::access_key::{AccessKey, AccessKeyPermission};
 
 pub fn account_new(amount: Balance, code_hash: CryptoHash) -> Account {
-    Account::new(amount, 0, code_hash, std::mem::size_of::<Account>() as u64)
+    Account::new(amount, 0, code_hash, std::mem::size_of::<Account>() as u64, PROTOCOL_VERSION)
 }
 
 impl Transaction {
diff --git a/core/primitives/src/transaction.rs b/core/primitives/src/transaction.rs
index 724a76aaeeb..9a00ab29cbb 100644
--- a/core/primitives/src/transaction.rs
+++ b/core/primitives/src/transaction.rs
@@ -7,7 +7,7 @@ use serde::{Deserialize, Serialize};
 
 use near_crypto::{PublicKey, Signature};
 
-use crate::account::AccessKey;
+use crate::access_key::AccessKey;
 use crate::errors::TxExecutionError;
 use crate::hash::{hash, CryptoHash};
 use crate::logging;
@@ -423,7 +423,7 @@ mod tests {
 
     use near_crypto::{InMemorySigner, KeyType, Signature, Signer};
 
-    use crate::account::{AccessKeyPermission, FunctionCallPermission};
+    use crate::access_key::{AccessKeyPermission, FunctionCallPermission};
     use crate::serialize::to_base;
 
     use super::*;
diff --git a/core/primitives/src/types.rs b/core/primitives/src/types.rs
index defe244373c..46a1054dc4e 100644
--- a/core/primitives/src/types.rs
+++ b/core/primitives/src/types.rs
@@ -4,7 +4,8 @@ use serde::{Deserialize, Serialize};
 
 use near_crypto::PublicKey;
 
-use crate::account::{AccessKey, Account};
+use crate::access_key::AccessKey;
+use crate::account::Account;
 use crate::challenge::ChallengesResult;
 use crate::errors::EpochError;
 use crate::hash::CryptoHash;
diff --git a/core/primitives/src/views.rs b/core/primitives/src/views.rs
index 12ee946e0a0..b05e21de50a 100644
--- a/core/primitives/src/views.rs
+++ b/core/primitives/src/views.rs
@@ -13,7 +13,8 @@ use serde::{Deserialize, Serialize};
 
 use near_crypto::{PublicKey, Signature};
 
-use crate::account::{AccessKey, AccessKeyPermission, Account, FunctionCallPermission};
+use crate::access_key::{AccessKey, AccessKeyPermission, FunctionCallPermission};
+use crate::account::Account;
 use crate::block::{Block, BlockHeader};
 use crate::block_header::{
     BlockHeaderInnerLite, BlockHeaderInnerRest, BlockHeaderInnerRestV2, BlockHeaderV1,
@@ -48,7 +49,7 @@ use crate::types::{
     StateChangeValue, StateChangeWithCause, StateChangesRequest, StateRoot, StorageUsage, StoreKey,
     StoreValue, ValidatorKickoutReason,
 };
-use crate::version::{ProtocolVersion, Version};
+use crate::version::{ProtocolVersion, Version, PROTOCOL_VERSION};
 use validator_stake_view::ValidatorStakeView;
 
 /// A view of the account
@@ -95,6 +96,9 @@ pub struct ViewApplyState {
     /// EVM chain ID
     #[cfg(feature = "protocol_feature_evm")]
     pub evm_chain_id: u64,
+    /// True iff this is on mainnet
+    #[cfg(feature = "protocol_feature_add_account_versions")]
+    pub is_mainnet: bool,
 }
 
 impl From<&Account> for AccountView {
@@ -117,7 +121,7 @@ impl From<Account> for AccountView {
 
 impl From<&AccountView> for Account {
     fn from(view: &AccountView) -> Self {
-        Account::new(view.amount, view.locked, view.code_hash, view.storage_usage)
+        Account::new(view.amount, view.locked, view.code_hash, view.storage_usage, PROTOCOL_VERSION)
     }
 }
 
diff --git a/core/store/src/lib.rs b/core/store/src/lib.rs
index 2c1881c71d5..9a8ff72c898 100644
--- a/core/store/src/lib.rs
+++ b/core/store/src/lib.rs
@@ -19,7 +19,7 @@ pub use db::{
     LARGEST_TARGET_HEIGHT_KEY, LATEST_KNOWN_KEY, NUM_COLS, SHOULD_COL_GC, SKIP_COL_GC, TAIL_KEY,
 };
 use near_crypto::PublicKey;
-use near_primitives::account::{AccessKey, Account};
+use near_primitives::account::Account;
 use near_primitives::contract::ContractCode;
 pub use near_primitives::errors::StorageError;
 use near_primitives::hash::CryptoHash;
@@ -38,6 +38,7 @@ pub use crate::trie::{
     update::TrieUpdateValuePtr, KeyForStateChanges, PartialStorage, ShardTries, Trie, TrieChanges,
     WrappedTrieChanges,
 };
+use near_primitives::access_key::AccessKey;
 
 pub mod db;
 pub mod migrations;
diff --git a/core/store/src/migrations.rs b/core/store/src/migrations.rs
index 36998d9f1d7..1fe786e4667 100644
--- a/core/store/src/migrations.rs
+++ b/core/store/src/migrations.rs
@@ -316,7 +316,7 @@ impl<'a> BatchedStoreUpdate<'a> {
         value: &T,
     ) -> Result<(), std::io::Error> {
         let value_bytes = value.try_to_vec()?;
-        self.batch_size += key.as_ref().len() + value_bytes.len() + 8;
+        self.batch_size += key.len() + value_bytes.len() + 8;
         self.store_update.as_mut().unwrap().set(col, key.as_ref(), &value_bytes);
 
         if self.batch_size > self.batch_size_limit {
diff --git a/genesis-tools/genesis-csv-to-json/src/csv_parser.rs b/genesis-tools/genesis-csv-to-json/src/csv_parser.rs
index 969d5914080..cdabba9c8f9 100644
--- a/genesis-tools/genesis-csv-to-json/src/csv_parser.rs
+++ b/genesis-tools/genesis-csv-to-json/src/csv_parser.rs
@@ -9,12 +9,14 @@ use serde::{Deserialize, Serialize};
 
 use near_crypto::{KeyType, PublicKey};
 use near_network::PeerInfo;
-use near_primitives::account::{AccessKey, AccessKeyPermission, Account, FunctionCallPermission};
+use near_primitives::access_key::{AccessKey, AccessKeyPermission, FunctionCallPermission};
+use near_primitives::account::Account;
 use near_primitives::hash::{hash, CryptoHash};
 use near_primitives::receipt::{ActionReceipt, Receipt, ReceiptEnum};
 use near_primitives::state_record::StateRecord;
 use near_primitives::transaction::{Action, FunctionCallAction};
 use near_primitives::types::{AccountId, AccountInfo, Balance, Gas};
+use near_primitives::version::PROTOCOL_VERSION;
 use near_runtime_utils::is_valid_account_id;
 
 /// Methods that can be called by a non-privileged access key.
@@ -196,7 +198,13 @@ fn account_records(row: &Row, gas_price: Balance) -> Vec<StateRecord> {
 
     let mut res = vec![StateRecord::Account {
         account_id: row.account_id.clone(),
-        account: Account::new(row.amount, row.validator_stake, smart_contract_hash.into(), 0),
+        account: Account::new(
+            row.amount,
+            row.validator_stake,
+            smart_contract_hash.into(),
+            0,
+            PROTOCOL_VERSION,
+        ),
     }];
 
     // Add restricted access keys.
diff --git a/genesis-tools/genesis-populate/Cargo.toml b/genesis-tools/genesis-populate/Cargo.toml
index f1a3da2d898..cfc787c95d2 100644
--- a/genesis-tools/genesis-populate/Cargo.toml
+++ b/genesis-tools/genesis-populate/Cargo.toml
@@ -24,3 +24,4 @@ near-jsonrpc = { path = "../../chain/jsonrpc" }
 near-telemetry = { path = "../../chain/telemetry" }
 near-epoch-manager = { path = "../../chain/epoch_manager" }
 near-test-contracts = { path = "../../runtime/near-test-contracts" }
+node-runtime = { path = "../../runtime/runtime" }
diff --git a/genesis-tools/genesis-populate/src/lib.rs b/genesis-tools/genesis-populate/src/lib.rs
index 7a5272d6c3e..35ae876f704 100644
--- a/genesis-tools/genesis-populate/src/lib.rs
+++ b/genesis-tools/genesis-populate/src/lib.rs
@@ -13,7 +13,8 @@ use near_chain::types::BlockHeaderInfo;
 use near_chain::{Block, Chain, ChainStore, RuntimeAdapter};
 use near_chain_configs::Genesis;
 use near_crypto::{InMemorySigner, KeyType};
-use near_primitives::account::{AccessKey, Account};
+use near_primitives::access_key::AccessKey;
+use near_primitives::account::Account;
 use near_primitives::block::{genesis_chunks, Tip};
 use near_primitives::contract::ContractCode;
 use near_primitives::hash::{hash, CryptoHash};
@@ -24,6 +25,7 @@ use near_store::{
     create_store, get_account, set_access_key, set_account, set_code, ColState, Store, TrieUpdate,
 };
 use neard::{get_store_path, NightshadeRuntime};
+use node_runtime::Runtime;
 
 fn get_account_id(account_index: u64) -> String {
     format!("near_{}_{}", account_index, account_index)
@@ -163,10 +165,8 @@ impl GenesisBuilder {
             self.state_updates.remove(&shard_idx).expect("State updates are always available");
 
         // Compute storage usage and update accounts.
-        for (account_id, storage_usage) in self
-            .runtime
-            .runtime
-            .compute_storage_usage(&records, &self.genesis.config.runtime_config)
+        for (account_id, storage_usage) in
+            Runtime::compute_storage_usage(&records, &self.genesis.config.runtime_config)
         {
             let mut account =
                 get_account(&state_update, &account_id)?.expect("We should've created account");
@@ -252,6 +252,7 @@ impl GenesisBuilder {
             testing_init_stake,
             self.additional_accounts_code_hash,
             0,
+            self.genesis.config.protocol_version,
         );
         set_account(&mut state_update, account_id.clone(), &account);
         let account_record = StateRecord::Account { account_id: account_id.clone(), account };
diff --git a/neard/Cargo.toml b/neard/Cargo.toml
index 00f023f73fe..df2927b9ad2 100644
--- a/neard/Cargo.toml
+++ b/neard/Cargo.toml
@@ -6,10 +6,10 @@ edition = "2018"
 default-run = "neard"
 
 [dependencies]
-jemallocator = { version = "0.3"  }
+jemallocator = { version = "0.3" }
 actix = "0.11.0-beta.2"
 actix-rt = "2"
-actix-web = { version = "4.0.0-beta.1", features = [ "openssl" ] }
+actix-web = { version = "4.0.0-beta.1", features = ["openssl"] }
 byteorder = "1.2"
 easy-ext = "0.2"
 chrono = { version = "0.4.4", features = ["serde"] }
@@ -17,7 +17,7 @@ git-version = "0.3.1"
 futures = "0.3"
 clap = "2.32"
 rand = "0.7"
-serde = { version = "1", features = [ "derive" ] }
+serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 dirs = "3"
 borsh = "0.8.1"
@@ -33,9 +33,9 @@ near-crypto = { path = "../core/crypto" }
 near-primitives = { path = "../core/primitives" }
 near-chain-configs = { path = "../core/chain-configs" }
 near-store = { path = "../core/store" }
-node-runtime = { path = "../runtime/runtime"}
+node-runtime = { path = "../runtime/runtime" }
 near-chain = { path = "../chain/chain" }
-near-chunks = { path = "../chain/chunks"}
+near-chunks = { path = "../chain/chunks" }
 near-client = { path = "../chain/client" }
 near-pool = { path = "../chain/pool" }
 near-network = { path = "../chain/network" }
@@ -59,7 +59,7 @@ primitive-types = "0.9"
 performance_stats = ["near-performance-metrics/performance_stats"]
 memory_stats = ["near-performance-metrics/memory_stats"]
 c_memory_stats = ["near-performance-metrics/c_memory_stats"]
-adversarial =  ["near-client/adversarial", "near-network/adversarial", "near-store/adversarial"]
+adversarial = ["near-client/adversarial", "near-network/adversarial", "near-store/adversarial"]
 expensive_tests = ["near-client/expensive_tests", "near-epoch-manager/expensive_tests", "near-chain/expensive_tests"]
 metric_recorder = ["near-network/metric_recorder", "near-client/metric_recorder"]
 no_cache = ["node-runtime/no_cache", "near-store/no_cache", "near-chain/no_cache"]
@@ -68,7 +68,7 @@ rosetta_rpc = ["near-rosetta-rpc"]
 protocol_feature_evm = ["near-primitives/protocol_feature_evm", "node-runtime/protocol_feature_evm", "near-chain-configs/protocol_feature_evm", "near-chain/protocol_feature_evm"]
 protocol_feature_alt_bn128 = ["near-primitives/protocol_feature_alt_bn128", "node-runtime/protocol_feature_alt_bn128"]
 protocol_feature_block_header_v3 = ["near-epoch-manager/protocol_feature_block_header_v3", "near-store/protocol_feature_block_header_v3", "near-primitives/protocol_feature_block_header_v3", "near-chain/protocol_feature_block_header_v3", "near-client/protocol_feature_block_header_v3"]
-protocol_feature_add_account_versions = ["near-primitives/protocol_feature_add_account_versions"]
+protocol_feature_add_account_versions = ["near-primitives/protocol_feature_add_account_versions", "node-runtime/protocol_feature_add_account_versions"]
 protocol_feature_tx_size_limit = ["near-primitives/protocol_feature_tx_size_limit", "node-runtime/protocol_feature_tx_size_limit"]
 protocol_feature_allow_create_account_on_delete = ["node-runtime/protocol_feature_allow_create_account_on_delete"]
 nightly_protocol_features = ["nightly_protocol", "near-primitives/nightly_protocol_features", "near-client/nightly_protocol_features", "near-epoch-manager/nightly_protocol_features", "near-store/nightly_protocol_features", "protocol_feature_evm", "protocol_feature_block_header_v3", "protocol_feature_alt_bn128", "protocol_feature_add_account_versions", "protocol_feature_tx_size_limit", "protocol_feature_allow_create_account_on_delete"]
diff --git a/neard/src/config.rs b/neard/src/config.rs
index 8e0ea618170..082ee74bdd5 100644
--- a/neard/src/config.rs
+++ b/neard/src/config.rs
@@ -20,7 +20,8 @@ use near_network::test_utils::open_port;
 use near_network::types::ROUTED_MESSAGE_TTL;
 use near_network::utils::blacklist_from_iter;
 use near_network::NetworkConfig;
-use near_primitives::account::{AccessKey, Account};
+use near_primitives::access_key::AccessKey;
+use near_primitives::account::Account;
 use near_primitives::hash::CryptoHash;
 use near_primitives::runtime::config::RuntimeConfig;
 use near_primitives::state_record::StateRecord;
@@ -727,7 +728,7 @@ fn add_account_with_key(
 ) {
     records.push(StateRecord::Account {
         account_id: account_id.to_string(),
-        account: Account::new(amount, staked, code_hash, 0),
+        account: Account::new(amount, staked, code_hash, 0, PROTOCOL_VERSION),
     });
     records.push(StateRecord::AccessKey {
         account_id: account_id.to_string(),
diff --git a/neard/src/genesis_validate.rs b/neard/src/genesis_validate.rs
index a363aa026b7..f0ef67242f5 100644
--- a/neard/src/genesis_validate.rs
+++ b/neard/src/genesis_validate.rs
@@ -107,13 +107,15 @@ mod test {
 
     use near_chain_configs::GenesisRecords;
     use near_crypto::{KeyType, PublicKey};
-    use near_primitives::account::{AccessKey, Account};
+    use near_primitives::access_key::AccessKey;
+    use near_primitives::account::Account;
     use near_primitives::types::AccountInfo;
+    use near_primitives::version::PROTOCOL_VERSION;
 
     const VALID_ED25519_RISTRETTO_KEY: &str = "ed25519:KuTCtARNzxZQ3YvXDeLjx83FDqxv2SdQTSbiq876zR7";
 
     fn create_account() -> Account {
-        Account::new(100, 10, Default::default(), 0)
+        Account::new(100, 10, Default::default(), 0, PROTOCOL_VERSION)
     }
 
     #[test]
diff --git a/neard/src/runtime/mod.rs b/neard/src/runtime/mod.rs
index d4ff279365d..6ee655a17a9 100644
--- a/neard/src/runtime/mod.rs
+++ b/neard/src/runtime/mod.rs
@@ -20,7 +20,8 @@ use near_chain_configs::{BETANET_EVM_CHAIN_ID, MAINNET_EVM_CHAIN_ID, TESTNET_EVM
 use near_crypto::{PublicKey, Signature};
 use near_epoch_manager::{EpochManager, RewardCalculator};
 use near_pool::types::PoolIterator;
-use near_primitives::account::{AccessKey, Account};
+use near_primitives::access_key::AccessKey;
+use near_primitives::account::Account;
 use near_primitives::block::{Approval, ApprovalInner};
 use near_primitives::challenge::ChallengesResult;
 use near_primitives::contract::ContractCode;
@@ -417,6 +418,8 @@ impl NightshadeRuntime {
             #[cfg(feature = "protocol_feature_evm")]
             evm_chain_id: self.evm_chain_id(),
             profile: Default::default(),
+            #[cfg(feature = "protocol_feature_add_account_versions")]
+            is_mainnet: self.genesis_config.is_mainnet(),
         };
 
         let apply_result = self
@@ -1266,6 +1269,8 @@ impl RuntimeAdapter for NightshadeRuntime {
                         current_protocol_version,
                         #[cfg(feature = "protocol_feature_evm")]
                         self.evm_chain_id(),
+                        #[cfg(feature = "protocol_feature_add_account_versions")]
+                        self.genesis_config.is_mainnet(),
                     )
                     .map_err(|err| near_chain::near_chain_primitives::error::QueryError::from_call_function_error(err, block_height, *block_hash))?;
                 Ok(QueryResponse {
@@ -1536,6 +1541,7 @@ impl node_runtime::adapter::ViewRuntimeAdapter for NightshadeRuntime {
         epoch_info_provider: &dyn EpochInfoProvider,
         current_protocol_version: ProtocolVersion,
         #[cfg(feature = "protocol_feature_evm")] evm_chain_id: u64,
+        #[cfg(feature = "protocol_feature_add_account_versions")] is_mainnet: bool,
     ) -> Result<Vec<u8>, node_runtime::state_viewer::errors::CallFunctionError> {
         let state_update = self.get_tries().new_trie_update_view(shard_id, state_root);
         let view_state = ViewApplyState {
@@ -1549,6 +1555,8 @@ impl node_runtime::adapter::ViewRuntimeAdapter for NightshadeRuntime {
             cache: Some(Arc::new(StoreCompiledContractCache { store: self.tries.get_store() })),
             #[cfg(feature = "protocol_feature_evm")]
             evm_chain_id,
+            #[cfg(feature = "protocol_feature_add_account_versions")]
+            is_mainnet,
         };
         self.trie_viewer.call_function(
             state_update,
diff --git a/runtime/runtime-params-estimator/Cargo.toml b/runtime/runtime-params-estimator/Cargo.toml
index ba22ba922b9..e3e79c597c7 100644
--- a/runtime/runtime-params-estimator/Cargo.toml
+++ b/runtime/runtime-params-estimator/Cargo.toml
@@ -54,7 +54,7 @@ no_cache = ["node-runtime/no_cache", "near-store/no_cache"]
 wasmtime = ["near-vm-logic/wasmtime_default"]
 lightbeam = ["wasmtime", "near-vm-runner/lightbeam"]
 nightly_protocol = ["near-primitives/nightly_protocol"]
-nightly_protocol_features = ["protocol_feature_alt_bn128", "protocol_feature_evm"]
+nightly_protocol_features = ["protocol_feature_alt_bn128", "protocol_feature_evm", "protocol_feature_add_account_versions"]
 protocol_feature_alt_bn128 = [
     "near-vm-logic/protocol_feature_alt_bn128",
     "near-vm-runner/protocol_feature_alt_bn128",
@@ -62,6 +62,12 @@ protocol_feature_alt_bn128 = [
     "testlib/protocol_feature_alt_bn128",
     "neard/protocol_feature_alt_bn128",
 ]
+protocol_feature_add_account_versions = [
+    "near-primitives/protocol_feature_add_account_versions",
+    "neard/protocol_feature_add_account_versions",
+    "node-runtime/protocol_feature_add_account_versions",
+    "testlib/protocol_feature_add_account_versions",
+]
 protocol_feature_evm = ["near-evm-runner/protocol_feature_evm",
                         "near-vm-runner/protocol_feature_evm",
                         "near-chain-configs/protocol_feature_evm",
diff --git a/runtime/runtime-params-estimator/src/cases.rs b/runtime/runtime-params-estimator/src/cases.rs
index 85468631884..86c6ddc23db 100644
--- a/runtime/runtime-params-estimator/src/cases.rs
+++ b/runtime/runtime-params-estimator/src/cases.rs
@@ -9,7 +9,7 @@ use std::process;
 use std::sync::{Arc, Mutex};
 
 use near_crypto::{InMemorySigner, KeyType, PublicKey};
-use near_primitives::account::{AccessKey, AccessKeyPermission, FunctionCallPermission};
+use near_primitives::access_key::{AccessKey, AccessKeyPermission, FunctionCallPermission};
 use near_primitives::hash::CryptoHash;
 use near_primitives::transaction::{
     Action, AddKeyAction, CreateAccountAction, DeleteAccountAction, DeleteKeyAction,
diff --git a/runtime/runtime-params-estimator/src/testbed.rs b/runtime/runtime-params-estimator/src/testbed.rs
index 7685d2db46a..2d5f5a8b059 100644
--- a/runtime/runtime-params-estimator/src/testbed.rs
+++ b/runtime/runtime-params-estimator/src/testbed.rs
@@ -95,6 +95,8 @@ impl RuntimeTestbed {
             #[cfg(feature = "protocol_feature_evm")]
             evm_chain_id: near_chain_configs::TESTNET_EVM_CHAIN_ID,
             profile: Default::default(),
+            #[cfg(feature = "protocol_feature_add_account_versions")]
+            is_mainnet: false,
         };
         Self {
             workdir,
diff --git a/runtime/runtime/Cargo.toml b/runtime/runtime/Cargo.toml
index caa858786ac..36cd0cec077 100644
--- a/runtime/runtime/Cargo.toml
+++ b/runtime/runtime/Cargo.toml
@@ -20,6 +20,9 @@ thiserror = "1.0"
 
 borsh = "0.8.1"
 
+csv = "1.1.1"
+lazy-static-include = "3"
+
 near-crypto = { path = "../../core/crypto" }
 near-primitives = { path = "../../core/primitives" }
 near-store = { path = "../../core/store" }
@@ -53,6 +56,7 @@ protocol_feature_alt_bn128 = [
 ]
 protocol_feature_tx_size_limit = []
 protocol_feature_allow_create_account_on_delete = ["near-primitives/protocol_feature_allow_create_account_on_delete", "near-vm-logic/protocol_feature_allow_create_account_on_delete"]
+protocol_feature_add_account_versions = ["near-primitives/protocol_feature_add_account_versions"]
 
 [dev-dependencies]
 tempfile = "3"
diff --git a/runtime/runtime/res/storage_usage_delta.csv b/runtime/runtime/res/storage_usage_delta.csv
new file mode 100644
index 00000000000..53b9088993f
--- /dev/null
+++ b/runtime/runtime/res/storage_usage_delta.csv
@@ -0,0 +1,3112 @@
+0.near,1
+00.near,1
+001.near,1
+007.near,3
+0110b3cbbb0eb096319f1e12460519e65d0429375b7258f377265979c119889c,3
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+stanvtb.near,1
+stanwang.near,2
+stardust.near,6
+startico2017.near,7
+stbanhf.near,2
+steefan.near,1
+steeny.near,1
+stefan.near,1
+stefan1103.near,2
+steffen.near,2
+stela.near,1
+stells.near,1
+sten.near,2
+stephenreid.near,1
+sterx.near,1
+stevanus.near,1
+steve.near,1
+steven1989.near,2
+stevenlwk.near,1
+stijnlohuis.near,4
+stirzy.near,1
+stone.near,1
+straj7771.near,1
+strikerjax.near,1
+studeywebs.near,1
+stumpydoo5.near,1
+styxson.near,2
+subaozi.near,1
+subbu.near,1
+suhanbae.near,2
+suisiwen.near,1
+sukrucildirr.near,1
+sumit.near,2
+sun.near,1
+sung.near,1
+sunliming.near,2
+sunrise.near,1
+sunshine.near,1
+superlogico1983.near,2
+superman.near,1
+superpups.near,2
+superzack1221.near,1
+supi-tup.near,1
+suppernho.near,5
+suresh.near,1
+surf.near,1
+sushi.near,1
+sushiswap.near,1
+suyoda.near,2
+suzu151091.near,1
+svdv.near,1
+svetlanabunkova.near,1
+svetlanaby.near,1
+swaggadan.near,2
+swagomat.near,1
+sweetpotatoz.near,1
+swiss-staking.near,1
+swx123.near,3
+swys.near,1
+sxguan666.near,1
+sxguanok.near,2
+symadrynnikov.near,1
+syncnode.near,1
+system_s.near,1
+sz.near,2
+t14ul1.near,1
+tabtrading.near,1
+taforyou.near,1
+taganskii.near,1
+taheer121.near,2
+taiyab.near,2
+takashi.near,2
+taku.near,1
+tameemwallet2.near,1
+tanderug.near,1
+taoros.near,3
+tarun.near,1
+taruntrav.near,2
+tatelinpp.near,5
+tatyana_igumenceva.near,1
+taurolsan.near,1
+taylorholland13.near,1
+tayyab.near,1
+tb.near,1
+tchiu.near,2
+tclshilf.near,1
+tdmoor.near,5
+techno.near,1
+teleginate.near,1
+telegins.near,1
+teleginsv.near,1
+temaspeak.near,2
+temidayore.near,1
+tententen2.near,3
+terencehan.near,1
+terentyev089.near,1
+terror7777.near,1
+terryow11.near,1
+teuhcatl.near,1
+teusevi.near,2
+tevinl.near,2
+texgeek.near,2
+th3m477.near,1
+thanhvinh10589.near,1
+thatalex.near,1
+the.near,1
+the_lexa.near,1
+the_liolik.near,1
+thegoat.near,2
+thehatter.near,1
+themoon.near,1
+theo.near,2
+theobtl.near,1
+theresa.near,1
+thesky1234.near,2
+thienlongtu.near,6
+thisismynearwallet.near,1
+thiyaneswaran.near,2
+thomas.near,1
+thomasbaak.near,2
+thomasschneider110471.near,12
+thsnz.near,1
+ti3au.near,2
+tichathegreat.near,1
+tiger.near,1
+till.near,1
+timchuk_vladimir89.near,1
+timo.near,2
+timolei.near,1
+timonthen3arkat.near,1
+tinaing2019.near,2
+tinanpha.near,1
+tinotrung.near,1
+tipazloy.near,2
+tirreg9.near,1
+titalunz.near,2
+titikaka791.near,1
+tj77.near,6
+tlinder.near,1
+tobeaj2mer.near,1
+tobiofneptune.near,1
+todamoon.near,1
+todd.near,3
+todeco.near,2
+toebee.near,1
+tof.near,1
+tokenfundamentalist.near,1
+tolzr.near,1
+tom.near,2
+tom68.near,1
+tomas.near,1
+tomas007ales.near,1
+tomasz.near,2
+tome.near,1
+tommy.near,1
+tommybananas.near,1
+tommynara.near,2
+tommyvo.near,1
+tommzardoz.near,1
+tompi_2014.near,1
+tongcp1576.near,1
+tonton.near,3
+tony.near,1
+toonni.near,2
+torledo.near,1
+toth3moon.near,1
+tp493159.near,1
+trachartem.near,2
+tradesman.near,1
+trananhkhoait.near,1
+tranducnham.near,1
+travellerfrank.near,1
+treasury.near,1
+trepidswampmountain.near,1
+trevordagg.near,2
+tribe.near,1
+trick.near,1
+trim.near,1
+trojan.near,1
+troks.near,2
+trongtour.near,4
+troy.near,1
+true.near,2
+truongpx.near,1
+truongvanhoa19.near,1
+tschimi.near,1
+tso.near,1
+tsyregma.near,1
+tuanduongk37.near,1
+tunghaolin.near,1
+tuzem.near,1
+twintbeast.near,2
+twr.near,2
+txentejmnz.near,2
+txirrisklas.near,2
+tyler.near,1
+tymon.near,4
+tyoo.near,1
+tzouf.near,1
+u.near,2
+ubikcapital.near,1
+uen.near,2
+ujjwal.near,1
+ul.near,1
+ula.near,1
+ultracyl.near,1
+undefined.near,2
+underminer.near,1
+unicorn.near,1
+uniswap.near,1
+unit.near,1
+unknow-person.near,1
+unlimg.near,1
+unternehmer_83.near,1
+up.near,6
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+uptowneric.near,1
+ural.near,1
+urmas.near,1
+us.near,2
+usa.near,1
+usd.near,1
+usdt.near,1
+username.near,4
+userzuzer.near,2
+utifom.near,1
+vabsie.near,1
+vaclavmaslov1975.near,1
+vadim_0060708.near,2
+vadimpigolenko.near,2
+vaihen.near,1
+valodja.near,2
+vananh.near,1
+vanminh122298.near,1
+vantoanbk57.near,2
+vanvinh.near,1
+varenka.near,1
+varlan.near,2
+varun.near,1
+vasay1990.near,1
+vasilies.near,1
+vasilij333.near,2
+vavanu4.near,2
+vbs.near,1
+vcar.near,1
+vdfrost.near,1
+vdyz4t8u.near,1
+vega.near,1
+veitali.near,3
+vencn.near,1
+venediger.near,1
+verosar.near,1
+very.near,3
+vgng.near,2
+vicky.near,2
+vickyrock30.near,1
+vict.near,1
+vietanh.near,1
+vietanhle8888.near,1
+vietdo.near,1
+vigneshmadrista.near,1
+vigneshpandian.near,1
+vijayakumar.near,1
+vikassood1.near,1
+viktor.near,2
+viktor_benner.near,1
+viktorliu.near,1
+viktorskf.near,1
+vikusss89.near,1
+vilija.near,2
+vincent.near,1
+vinilpc.near,1
+vinmar.near,3
+vip.near,1
+vitalik.near,1
+vitalik_buterin.near,1
+vitaliy.near,1
+vitaly.near,1
+vitas86.near,1
+vitkov.near,1
+vitkov2.near,1
+vivi1333.near,1
+vk1118.near,1
+vlad.near,1
+vladimirg.near,1
+vladis.near,1
+vladsmd.near,2
+voland04.near,1
+vote4pedro.near,1
+vovusik.near,1
+vox.near,1
+vy_vy_22.near,1
+vytas.near,1
+wang16.near,2
+wangchao86.near,1
+wanglei0095.near,1
+wangsta.near,1
+wanseob.near,1
+warisyaqubi.near,2
+warlock.near,1
+warmcapital.near,1
+was.near,3
+waters.near,1
+wearesatoshi.near,1
+weariedatom.near,3
+web3.near,1
+webmel.near,2
+weed.near,1
+weiliangfung.near,2
+wenjielu.near,2
+wenxianjiang.near,1
+wetez.near,1
+whatever.near,1
+whiletrue.near,2
+white_house.near,3
+whoismrbru.near,1
+whoismrskill.near,1
+wildalert.near,1
+willymooth.near,1
+wimscot123.near,2
+win.near,1
+winnerclubs.near,1
+winnieyow.near,1
+wistar.near,1
+wladka666.near,3
+wodikasha.near,1
+wojak.near,1
+wolf34.near,1
+wompwomp.near,1
+wonbo.near,1
+wonderreturn.near,1
+woodwam.near,1
+wookiewarrior.near,2
+wow.near,1
+wowanjd.near,1
+wr.near,1
+wtldmrs.near,2
+wu365.near,1
+wu40.near,1
+wudi.near,2
+wuffle.near,1
+wurstmensch.near,1
+ww.near,1
+wx.near,2
+x.near,1
+xafobia.near,2
+xander.near,1
+xanyar.near,2
+xbadmax.near,2
+xbleidx11.near,1
+xedap.near,1
+xianghong0912.near,1
+xiaobo.near,1
+xiaojun.near,1
+xikunying.near,1
+xoreth.near,8
+xpaco.near,2
+xpromt.near,1
+xrahul.near,1
+xtreme11.near,1
+xtreme12.near,1
+xuyogi.near,1
+xvideos469.near,2
+xx.near,1
+xxx.near,1
+xy.near,2
+xyb.near,2
+y0b.near,1
+yajirushiworks2020.near,2
+yakultza.near,2
+yam.near,1
+yams.near,4
+yan.near,5
+yangchj.near,1
+yangshen.near,1
+yangweizi911.near,1
+yanmingguo.near,1
+yanok1985.near,2
+yaomengmeng1986.near,1
+yarco.near,1
+yashman.near,1
+yasser.near,2
+ybob.near,2
+yc.near,2
+ycl.near,2
+yderdiki.near,1
+yearn.near,1
+yellowboy.near,1
+yessin.near,2
+yfi.near,1
+yfledger.near,1
+yicrson.near,1
+yin123y.near,3
+yinqa.near,1
+ykhan60.near,1
+ykvph.near,1
+yl.near,1
+yoda.near,3
+yoda_uk.near,2
+yodake.near,2
+yolo_surf.near,1
+yongming.near,5
+yoonho00.near,1
+york1ng99.near,1
+youtube.near,2
+yrl2000.near,1
+ysxlin01.near,2
+yt8686jh.near,1
+yuchialiang.near,2
+yuggalen.near,1
+yujinbo.near,1
+yulian.near,1
+yuridiablo.near,2
+yuristturist.near,1
+yuriy.near,1
+yury.near,1
+yuta.near,1
+yuther.near,1
+yy.near,1
+yylai.near,2
+z.near,1
+zachzwei.near,1
+zaebumba.near,1
+zamzam1.near,1
+zamzam2.near,1
+zano66.near,1
+zaremba.near,1
+zazoley.near,2
+zealot.near,1
+zeecity.near,1
+zenithli.near,1
+zeromax.near,1
+zeroone.near,1
+zeus7912.near,4
+zeusone.near,1
+zeze.near,2
+zhartur89.near,1
+zhelserhii09.near,1
+zhuhao529440.near,1
+zhuoyue.near,1
+ziaaddils.near,1
+zilj.near,1
+zinur.near,1
+zitko.near,2
+ziyou.near,1
+zjouraolian.near,1
+zkp.near,2
+zoek.near,1
+zorro.near,1
+zpool.near,4
+zyzygy.near,1
+zzangpk.near,1
+zzf.near,1
+zztom.near,1
diff --git a/runtime/runtime/src/actions.rs b/runtime/runtime/src/actions.rs
index 8e7c5d15fbe..05859f2614d 100644
--- a/runtime/runtime/src/actions.rs
+++ b/runtime/runtime/src/actions.rs
@@ -1,7 +1,8 @@
 use borsh::{BorshDeserialize, BorshSerialize};
 
 use near_crypto::PublicKey;
-use near_primitives::account::{AccessKey, AccessKeyPermission, Account};
+use near_primitives::access_key::{AccessKey, AccessKeyPermission};
+use near_primitives::account::Account;
 use near_primitives::checked_feature;
 use near_primitives::contract::ContractCode;
 use near_primitives::errors::{
@@ -40,7 +41,11 @@ use near_vm_logic::{VMContext, VMOutcome};
 use crate::config::{safe_add_gas, RuntimeConfig};
 use crate::ext::RuntimeExt;
 use crate::{ActionResult, ApplyState};
+#[cfg(feature = "protocol_feature_add_account_versions")]
+use near_primitives::account::AccountVersion::{V1, V2};
 use near_vm_runner::precompile_contract;
+#[cfg(feature = "protocol_feature_add_account_versions")]
+use std::collections::HashMap;
 
 /// Runs given function call with given context / apply state.
 /// Precompiles:
@@ -268,6 +273,13 @@ pub(crate) fn action_function_call(
         result.gas_used = safe_add_gas(result.gas_used, outcome.used_gas)?;
         result.logs.extend(outcome.logs.into_iter());
         if execution_succeeded {
+            #[cfg(feature = "protocol_feature_add_account_versions")]
+            migrate_account(
+                account,
+                account_id,
+                apply_state.is_mainnet,
+                apply_state.current_protocol_version,
+            );
             account.set_amount(outcome.balance);
             account.set_storage_usage(outcome.storage_usage);
             result.result = Ok(outcome.return_data);
@@ -377,6 +389,7 @@ pub(crate) fn action_create_account(
     account_id: &AccountId,
     predecessor_id: &AccountId,
     result: &mut ActionResult,
+    protocol_version: ProtocolVersion,
 ) {
     // NOTE: The account_id is valid, because the Receipt is validated before.
     debug_assert!(is_valid_account_id(account_id));
@@ -414,6 +427,7 @@ pub(crate) fn action_create_account(
         0,
         CryptoHash::default(),
         fee_config.storage_usage_config.num_bytes_account,
+        protocol_version,
     ));
 }
 
@@ -424,6 +438,7 @@ pub(crate) fn action_implicit_account_creation_transfer(
     actor_id: &mut AccountId,
     account_id: &AccountId,
     transfer: &TransferAction,
+    protocol_version: ProtocolVersion,
 ) {
     // NOTE: The account_id is hex like, because we've checked the permissions before.
     debug_assert!(is_account_id_64_len_hex(account_id));
@@ -450,6 +465,7 @@ pub(crate) fn action_implicit_account_creation_transfer(
             + public_key.len() as u64
             + access_key.try_to_vec().unwrap().len() as u64
             + fee_config.storage_usage_config.num_extra_bytes_record,
+        protocol_version,
     ));
 
     set_access_key(state_update, account_id.clone(), public_key, &access_key);
@@ -465,6 +481,13 @@ pub(crate) fn action_deploy_contract(
     let code = ContractCode::new(deploy_contract.code.clone(), None);
     let prev_code = get_code(state_update, account_id, Some(account.code_hash()))?;
     let prev_code_length = prev_code.map(|code| code.code.len() as u64).unwrap_or_default();
+    #[cfg(feature = "protocol_feature_add_account_versions")]
+    migrate_account(
+        account,
+        account_id,
+        apply_state.is_mainnet,
+        apply_state.current_protocol_version,
+    );
     account.set_storage_usage(account.storage_usage().checked_sub(prev_code_length).unwrap_or(0));
     account.set_storage_usage(
         account.storage_usage().checked_add(code.code.len() as u64).ok_or_else(|| {
@@ -569,29 +592,35 @@ pub(crate) fn action_delete_account(
 }
 
 pub(crate) fn action_delete_key(
-    fee_config: &RuntimeFeesConfig,
     state_update: &mut TrieUpdate,
     account: &mut Account,
     result: &mut ActionResult,
     account_id: &AccountId,
     delete_key: &DeleteKeyAction,
-    current_protocol_version: ProtocolVersion,
+    apply_state: &ApplyState,
 ) -> Result<(), StorageError> {
     let access_key = get_access_key(state_update, &account_id, &delete_key.public_key)?;
     if let Some(access_key) = access_key {
-        let storage_usage_config = &fee_config.storage_usage_config;
-        let storage_usage = if current_protocol_version >= DELETE_KEY_STORAGE_USAGE_PROTOCOL_VERSION
-        {
-            delete_key.public_key.try_to_vec().unwrap().len() as u64
-                + access_key.try_to_vec().unwrap().len() as u64
-                + storage_usage_config.num_extra_bytes_record
-        } else {
-            delete_key.public_key.try_to_vec().unwrap().len() as u64
-                + Some(access_key).try_to_vec().unwrap().len() as u64
-                + storage_usage_config.num_extra_bytes_record
-        };
+        let storage_usage_config = &apply_state.config.transaction_costs.storage_usage_config;
+        let storage_usage =
+            if apply_state.current_protocol_version >= DELETE_KEY_STORAGE_USAGE_PROTOCOL_VERSION {
+                delete_key.public_key.try_to_vec().unwrap().len() as u64
+                    + access_key.try_to_vec().unwrap().len() as u64
+                    + storage_usage_config.num_extra_bytes_record
+            } else {
+                delete_key.public_key.try_to_vec().unwrap().len() as u64
+                    + Some(access_key).try_to_vec().unwrap().len() as u64
+                    + storage_usage_config.num_extra_bytes_record
+            };
         // Remove access key
         remove_access_key(state_update, account_id.clone(), delete_key.public_key.clone());
+        #[cfg(feature = "protocol_feature_add_account_versions")]
+        migrate_account(
+            account,
+            account_id,
+            apply_state.is_mainnet,
+            apply_state.current_protocol_version,
+        );
         account.set_storage_usage(account.storage_usage().checked_sub(storage_usage).unwrap_or(0));
     } else {
         result.result = Err(ActionErrorKind::DeleteKeyDoesNotExist {
@@ -621,8 +650,8 @@ pub(crate) fn action_add_key(
     }
     if checked_feature!("stable", AccessKeyNonceRange, apply_state.current_protocol_version) {
         let mut access_key = add_key.access_key.clone();
-        access_key.nonce = (apply_state.block_index - 1)
-            * near_primitives::account::AccessKey::ACCESS_KEY_NONCE_RANGE_MULTIPLIER;
+        access_key.nonce =
+            (apply_state.block_index - 1) * AccessKey::ACCESS_KEY_NONCE_RANGE_MULTIPLIER;
         set_access_key(state_update, account_id.clone(), add_key.public_key.clone(), &access_key);
     } else {
         set_access_key(
@@ -633,6 +662,13 @@ pub(crate) fn action_add_key(
         );
     };
     let storage_config = &apply_state.config.transaction_costs.storage_usage_config;
+    #[cfg(feature = "protocol_feature_add_account_versions")]
+    migrate_account(
+        account,
+        account_id,
+        apply_state.is_mainnet,
+        apply_state.current_protocol_version,
+    );
     account.set_storage_usage(
         account
             .storage_usage()
@@ -762,6 +798,53 @@ pub(crate) fn check_account_existence(
     Ok(())
 }
 
+#[cfg(feature = "protocol_feature_add_account_versions")]
+lazy_static_include::lazy_static_include_str! {
+    STORAGE_USAGE_DELTA_CSV => "res/storage_usage_delta.csv"
+}
+
+#[cfg(feature = "protocol_feature_add_account_versions")]
+fn read_storage_usage_delta() -> HashMap<AccountId, u64> {
+    let mut reader = csv::Reader::from_reader(STORAGE_USAGE_DELTA_CSV.as_bytes());
+    let mut result = HashMap::new();
+    for record in reader.records() {
+        let record = record.expect("Malformed storage_usage_delta.csv");
+        let account_id = &record[0];
+        let delta = record[1].parse::<u64>().expect("Malformed storage_usage_delta.csv");
+        result.insert(account_id.to_string() as AccountId, delta);
+    }
+    result
+}
+
+#[cfg(feature = "protocol_feature_add_account_versions")]
+lazy_static::lazy_static! {
+    static ref STORAGE_USAGE_DELTA_FROM_FILE: HashMap<AccountId, u64> = read_storage_usage_delta();
+}
+
+#[cfg(feature = "protocol_feature_add_account_versions")]
+fn migrate_account(
+    account: &mut Account,
+    account_id: &AccountId,
+    is_mainnet: bool,
+    current_protocol_version: ProtocolVersion,
+) {
+    if checked_feature!(
+        "protocol_feature_add_account_versions",
+        AccountVersions,
+        current_protocol_version
+    ) && account.version() == V1
+    {
+        account.set_version(V2);
+        if is_mainnet {
+            if let Some(storage_usage_delta) = STORAGE_USAGE_DELTA_FROM_FILE.get(account_id) {
+                account.set_storage_usage(
+                    account.storage_usage().saturating_add(*storage_usage_delta),
+                );
+            }
+        }
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use near_primitives::hash::hash;
@@ -769,6 +852,13 @@ mod tests {
     use near_store::test_utils::create_tries;
 
     use super::*;
+    #[cfg(feature = "protocol_feature_add_account_versions")]
+    use near_primitives::account::AccountVersion;
+    #[cfg(feature = "protocol_feature_add_account_versions")]
+    use near_primitives::serialize::to_base;
+    #[cfg(feature = "protocol_feature_add_account_versions")]
+    use near_primitives::version::ProtocolFeature::AccountVersions;
+    use near_primitives::version::PROTOCOL_VERSION;
 
     fn test_action_create_account(
         account_id: AccountId,
@@ -789,6 +879,7 @@ mod tests {
             &account_id,
             &predecessor_id,
             &mut action_result,
+            PROTOCOL_VERSION,
         );
         if action_result.result.is_ok() {
             assert!(account.is_some());
@@ -875,7 +966,7 @@ mod tests {
         storage_usage: u64,
         state_update: &mut TrieUpdate,
     ) -> ActionResult {
-        let mut account = Some(Account::new(100, 0, *code_hash, storage_usage));
+        let mut account = Some(Account::new(100, 0, *code_hash, storage_usage, PROTOCOL_VERSION));
         let mut actor_id = account_id.clone();
         let mut action_result = ActionResult::default();
         let receipt = Receipt::new_balance_refund(&"alice.near".to_string(), 0);
@@ -952,4 +1043,29 @@ mod tests {
             })
         );
     }
+
+    #[test]
+    #[cfg(feature = "protocol_feature_add_account_versions")]
+    fn test_storage_usage_delta() {
+        assert_eq!(
+            to_base(hash(STORAGE_USAGE_DELTA_CSV.as_bytes())),
+            "6vvz6vHkKekc6sEk2nzzJoWLBsiV7cy7Z5KMGKrzHGy1"
+        );
+        let version = AccountVersions.protocol_version();
+        let account_id = "near".to_string() as AccountId;
+        let mut account = Account::new(0, 0, Default::default(), 0, version - 1);
+        migrate_account(&mut account, &account_id, false, version - 1);
+        assert_eq!(account.storage_usage(), 0);
+        assert_eq!(account.version(), AccountVersion::V1);
+        migrate_account(&mut account, &account_id, false, version);
+        assert_eq!(account.storage_usage(), 0);
+        assert_eq!(account.version(), AccountVersion::V2);
+        account.set_version(AccountVersion::V1);
+        migrate_account(&mut account, &account_id, true, version - 1);
+        assert_eq!(account.storage_usage(), 0);
+        assert_eq!(account.version(), AccountVersion::V1);
+        migrate_account(&mut account, &account_id, true, version);
+        assert_eq!(account.storage_usage(), 4196);
+        assert_eq!(account.version(), AccountVersion::V2);
+    }
 }
diff --git a/runtime/runtime/src/adapter.rs b/runtime/runtime/src/adapter.rs
index 8b907d60be0..50113771be8 100644
--- a/runtime/runtime/src/adapter.rs
+++ b/runtime/runtime/src/adapter.rs
@@ -1,5 +1,6 @@
 use near_crypto::PublicKey;
-use near_primitives::account::{AccessKey, Account};
+use near_primitives::access_key::AccessKey;
+use near_primitives::account::Account;
 use near_primitives::contract::ContractCode;
 use near_primitives::hash::CryptoHash;
 use near_primitives::types::{
@@ -41,6 +42,7 @@ pub trait ViewRuntimeAdapter {
         epoch_info_provider: &dyn EpochInfoProvider,
         current_protocol_version: ProtocolVersion,
         #[cfg(feature = "protocol_feature_evm")] evm_chain_id: u64,
+        #[cfg(feature = "protocol_feature_add_account_versions")] is_mainnet: bool,
     ) -> Result<Vec<u8>, crate::state_viewer::errors::CallFunctionError>;
 
     fn view_access_key(
diff --git a/runtime/runtime/src/config.rs b/runtime/runtime/src/config.rs
index 204248cea34..e4ad2eab7fa 100644
--- a/runtime/runtime/src/config.rs
+++ b/runtime/runtime/src/config.rs
@@ -5,7 +5,7 @@ use num_bigint::BigUint;
 use num_traits::cast::ToPrimitive;
 use num_traits::pow::Pow;
 
-use near_primitives::account::AccessKeyPermission;
+use near_primitives::access_key::AccessKeyPermission;
 use near_primitives::checked_feature;
 use near_primitives::errors::IntegerOverflowError;
 // Just re-exporting RuntimeConfig for backwards compatibility.
diff --git a/runtime/runtime/src/ext.rs b/runtime/runtime/src/ext.rs
index 6360905323d..185971a9847 100644
--- a/runtime/runtime/src/ext.rs
+++ b/runtime/runtime/src/ext.rs
@@ -4,7 +4,7 @@ use borsh::BorshDeserialize;
 use log::debug;
 
 use near_crypto::PublicKey;
-use near_primitives::account::{AccessKey, AccessKeyPermission, FunctionCallPermission};
+use near_primitives::access_key::{AccessKey, AccessKeyPermission, FunctionCallPermission};
 use near_primitives::contract::ContractCode;
 use near_primitives::errors::{ExternalError, StorageError};
 use near_primitives::hash::CryptoHash;
diff --git a/runtime/runtime/src/lib.rs b/runtime/runtime/src/lib.rs
index c1b51b4627f..00ff502ad01 100644
--- a/runtime/runtime/src/lib.rs
+++ b/runtime/runtime/src/lib.rs
@@ -9,7 +9,8 @@ use near_crypto::PublicKey;
 pub use near_primitives;
 use near_primitives::runtime::get_insufficient_storage_stake;
 use near_primitives::{
-    account::{AccessKey, Account},
+    access_key::AccessKey,
+    account::Account,
     contract::ContractCode,
     errors::{ActionError, ActionErrorKind, RuntimeError, TxExecutionError},
     hash::CryptoHash,
@@ -325,6 +326,7 @@ impl Runtime {
                     &receipt.receiver_id,
                     &receipt.predecessor_id,
                     &mut result,
+                    apply_state.current_protocol_version,
                 );
             }
             Action::DeployContract(deploy_contract) => {
@@ -381,6 +383,7 @@ impl Runtime {
                         actor_id,
                         &receipt.receiver_id,
                         transfer,
+                        apply_state.current_protocol_version,
                     );
                 }
             }
@@ -409,13 +412,12 @@ impl Runtime {
             Action::DeleteKey(delete_key) => {
                 near_metrics::inc_counter(&metrics::ACTION_DELETE_KEY_TOTAL);
                 action_delete_key(
-                    &apply_state.config.transaction_costs,
                     state_update,
                     account.as_mut().expect(EXPECT_ACCOUNT_EXISTS),
                     &mut result,
                     account_id,
                     delete_key,
-                    apply_state.current_protocol_version,
+                    apply_state,
                 )?;
             }
             Action::DeleteAccount(delete_account) => {
@@ -1298,7 +1300,6 @@ impl Runtime {
     /// It's okay to use unsafe math here, because this method should only be called on the trusted
     /// state records (e.g. at launch from genesis)
     pub fn compute_storage_usage<Record: Borrow<StateRecord>>(
-        &self,
         records: &[Record],
         config: &RuntimeConfig,
     ) -> HashMap<AccountId, u64> {
@@ -1388,7 +1389,7 @@ impl Runtime {
                 }
             }
         }
-        for (account_id, storage_usage) in self.compute_storage_usage(records, &config) {
+        for (account_id, storage_usage) in Runtime::compute_storage_usage(records, &config) {
             let mut account = get_account(&state_update, &account_id)
                 .expect("Genesis storage error")
                 .expect("Account must exist");
@@ -1557,6 +1558,8 @@ mod tests {
             #[cfg(feature = "protocol_feature_evm")]
             evm_chain_id: near_chain_configs::TESTNET_EVM_CHAIN_ID,
             profile: ProfileData::new_enabled(),
+            #[cfg(feature = "protocol_feature_add_account_versions")]
+            is_mainnet: false,
         };
 
         (runtime, tries, root, apply_state, signer, MockEpochInfoProvider::default())
diff --git a/runtime/runtime/src/state_viewer/mod.rs b/runtime/runtime/src/state_viewer/mod.rs
index eea7f84ecf7..a26a249fa7c 100644
--- a/runtime/runtime/src/state_viewer/mod.rs
+++ b/runtime/runtime/src/state_viewer/mod.rs
@@ -1,7 +1,8 @@
 use log::debug;
 use near_crypto::{KeyType, PublicKey};
 use near_primitives::{
-    account::{AccessKey, Account},
+    access_key::AccessKey,
+    account::Account,
     borsh::BorshDeserialize,
     contract::ContractCode,
     hash::CryptoHash,
@@ -225,6 +226,8 @@ impl TrieViewer {
             #[cfg(feature = "protocol_feature_evm")]
             evm_chain_id: view_state.evm_chain_id,
             profile: Default::default(),
+            #[cfg(feature = "protocol_feature_add_account_versions")]
+            is_mainnet: view_state.is_mainnet,
         };
         let action_receipt = ActionReceipt {
             signer_id: originator_id.clone(),
@@ -311,6 +314,8 @@ mod tests {
             cache: None,
             #[cfg(feature = "protocol_feature_evm")]
             evm_chain_id: TESTNET_EVM_CHAIN_ID,
+            #[cfg(feature = "protocol_feature_add_account_versions")]
+            is_mainnet: false,
         };
         let result = viewer.call_function(
             root,
@@ -341,6 +346,8 @@ mod tests {
             cache: None,
             #[cfg(feature = "protocol_feature_evm")]
             evm_chain_id: TESTNET_EVM_CHAIN_ID,
+            #[cfg(feature = "protocol_feature_add_account_versions")]
+            is_mainnet: false,
         };
         let result = viewer.call_function(
             root,
@@ -376,6 +383,8 @@ mod tests {
             cache: None,
             #[cfg(feature = "protocol_feature_evm")]
             evm_chain_id: 0x99,
+            #[cfg(feature = "protocol_feature_add_account_versions")]
+            is_mainnet: false,
         };
         let result = viewer.call_function(
             root,
@@ -410,6 +419,8 @@ mod tests {
             cache: None,
             #[cfg(feature = "protocol_feature_evm")]
             evm_chain_id: 0x99,
+            #[cfg(feature = "protocol_feature_add_account_versions")]
+            is_mainnet: false,
         };
         let view_call_result = viewer.call_function(
             root,
@@ -487,7 +498,7 @@ mod tests {
         set_account(
             &mut state_update,
             alice_account(),
-            &Account::new(0, 0, CryptoHash::default(), 50_001),
+            &Account::new(0, 0, CryptoHash::default(), 50_001, PROTOCOL_VERSION),
         );
         let trie_viewer = TrieViewer::new_with_state_size_limit(Some(50_000));
         let result = trie_viewer.view_state(&state_update, &alice_account(), b"");
@@ -501,7 +512,7 @@ mod tests {
         set_account(
             &mut state_update,
             alice_account(),
-            &Account::new(0, 0, CryptoHash::default(), 50_001),
+            &Account::new(0, 0, CryptoHash::default(), 50_001, PROTOCOL_VERSION),
         );
         state_update.set(
             TrieKey::ContractCode { account_id: alice_account() },
@@ -526,6 +537,8 @@ mod tests {
             cache: None,
             #[cfg(feature = "protocol_feature_evm")]
             evm_chain_id: 0x99,
+            #[cfg(feature = "protocol_feature_add_account_versions")]
+            is_mainnet: false,
         };
         let mut logs = vec![];
         viewer
diff --git a/runtime/runtime/src/verifier.rs b/runtime/runtime/src/verifier.rs
index c08bc8be535..69120a3047e 100644
--- a/runtime/runtime/src/verifier.rs
+++ b/runtime/runtime/src/verifier.rs
@@ -1,7 +1,7 @@
 use near_crypto::key_conversion::is_valid_staking_key;
 use near_primitives::runtime::get_insufficient_storage_stake;
 use near_primitives::{
-    account::AccessKeyPermission,
+    access_key::AccessKeyPermission,
     config::VMLimitConfig,
     errors::{
         ActionsValidationError, InvalidAccessKeyError, InvalidTxError, ReceiptValidationError,
@@ -134,7 +134,7 @@ pub fn verify_and_charge_transaction(
     if checked_feature!("stable", AccessKeyNonceRange, current_protocol_version) {
         if let Some(height) = block_height {
             let upper_bound =
-                height * near_primitives::account::AccessKey::ACCESS_KEY_NONCE_RANGE_MULTIPLIER;
+                height * near_primitives::access_key::AccessKey::ACCESS_KEY_NONCE_RANGE_MULTIPLIER;
             if transaction.nonce >= upper_bound {
                 return Err(InvalidTxError::NonceTooLarge {
                     tx_nonce: transaction.nonce,
@@ -463,7 +463,8 @@ mod tests {
     use std::sync::Arc;
 
     use near_crypto::{InMemorySigner, KeyType, PublicKey, Signer};
-    use near_primitives::account::{AccessKey, Account, FunctionCallPermission};
+    use near_primitives::access_key::{AccessKey, FunctionCallPermission};
+    use near_primitives::account::Account;
     use near_primitives::hash::{hash, CryptoHash};
     use near_primitives::receipt::DataReceiver;
     use near_primitives::test_utils::account_new;
diff --git a/runtime/runtime/tests/runtime_group_tools/mod.rs b/runtime/runtime/tests/runtime_group_tools/mod.rs
index 48f3532250c..25ec24bed57 100644
--- a/runtime/runtime/tests/runtime_group_tools/mod.rs
+++ b/runtime/runtime/tests/runtime_group_tools/mod.rs
@@ -1,5 +1,6 @@
 use near_crypto::{InMemorySigner, KeyType};
-use near_primitives::account::{AccessKey, Account};
+use near_primitives::access_key::AccessKey;
+use near_primitives::account::Account;
 use near_primitives::hash::{hash, CryptoHash};
 use near_primitives::receipt::Receipt;
 use near_primitives::state_record::StateRecord;
@@ -73,6 +74,8 @@ impl StandaloneRuntime {
             #[cfg(feature = "protocol_feature_evm")]
             evm_chain_id: near_chain_configs::TESTNET_EVM_CHAIN_ID,
             profile: Default::default(),
+            #[cfg(feature = "protocol_feature_add_account_versions")]
+            is_mainnet: false,
         };
 
         Self {
@@ -176,7 +179,13 @@ impl RuntimeGroup {
             if (i as u64) < num_existing_accounts {
                 state_records.push(StateRecord::Account {
                     account_id: account_id.to_string(),
-                    account: Account::new(TESTING_INIT_BALANCE, TESTING_INIT_STAKE, code_hash, 0),
+                    account: Account::new(
+                        TESTING_INIT_BALANCE,
+                        TESTING_INIT_STAKE,
+                        code_hash,
+                        0,
+                        PROTOCOL_VERSION,
+                    ),
                 });
                 state_records.push(StateRecord::AccessKey {
                     account_id: account_id.to_string(),
diff --git a/runtime/runtime/tests/test_async_calls.rs b/runtime/runtime/tests/test_async_calls.rs
index be9eed9122b..f8fff681aa8 100644
--- a/runtime/runtime/tests/test_async_calls.rs
+++ b/runtime/runtime/tests/test_async_calls.rs
@@ -1,7 +1,7 @@
 use crate::runtime_group_tools::RuntimeGroup;
 use borsh::ser::BorshSerialize;
 use near_crypto::{InMemorySigner, KeyType};
-use near_primitives::account::{AccessKeyPermission, FunctionCallPermission};
+use near_primitives::access_key::{AccessKeyPermission, FunctionCallPermission};
 use near_primitives::checked_feature;
 use near_primitives::hash::CryptoHash;
 use near_primitives::receipt::{ActionReceipt, ReceiptEnum};
diff --git a/test-utils/testlib/Cargo.toml b/test-utils/testlib/Cargo.toml
index 3f078bfb9e1..8bd84df0460 100644
--- a/test-utils/testlib/Cargo.toml
+++ b/test-utils/testlib/Cargo.toml
@@ -57,5 +57,10 @@ protocol_feature_alt_bn128 = [
 protocol_feature_evm = ["near-evm-runner/protocol_feature_evm", "near-primitives/protocol_feature_evm", "neard/protocol_feature_evm", "node-runtime/protocol_feature_evm", "near-chain-configs/protocol_feature_evm", "near-chain/protocol_feature_evm"]
 protocol_feature_tx_size_limit = ["near-primitives/protocol_feature_tx_size_limit", "node-runtime/protocol_feature_tx_size_limit"]
 protocol_feature_allow_create_account_on_delete = ["near-primitives/protocol_feature_allow_create_account_on_delete"]
-nightly_protocol_features = ["nightly_protocol", "neard/nightly_protocol_features"]
+protocol_feature_add_account_versions = [
+    "near-primitives/protocol_feature_add_account_versions",
+    "neard/protocol_feature_add_account_versions",
+    "node-runtime/protocol_feature_add_account_versions",
+]
+nightly_protocol_features = ["nightly_protocol", "neard/nightly_protocol_features", "protocol_feature_add_account_versions"]
 nightly_protocol = ["neard/nightly_protocol"]
diff --git a/test-utils/testlib/src/node/runtime_node.rs b/test-utils/testlib/src/node/runtime_node.rs
index 2c99a51ab8c..24f044183ab 100644
--- a/test-utils/testlib/src/node/runtime_node.rs
+++ b/test-utils/testlib/src/node/runtime_node.rs
@@ -14,6 +14,7 @@ use crate::runtime_utils::{
 };
 use crate::user::runtime_user::MockClient;
 use crate::user::{RuntimeUser, User};
+use near_primitives::version::PROTOCOL_VERSION;
 
 pub struct RuntimeNode {
     pub client: Arc<RwLock<MockClient>>,
@@ -28,7 +29,13 @@ impl RuntimeNode {
         add_test_contract(&mut genesis, &bob_account());
         genesis.records.as_mut().push(StateRecord::Account {
             account_id: evm_account(),
-            account: Account::new(TESTING_INIT_BALANCE, 0, CryptoHash::default(), 0),
+            account: Account::new(
+                TESTING_INIT_BALANCE,
+                0,
+                CryptoHash::default(),
+                0,
+                PROTOCOL_VERSION,
+            ),
         });
         Self::new_from_genesis(account_id, genesis)
     }
diff --git a/test-utils/testlib/src/runtime_utils.rs b/test-utils/testlib/src/runtime_utils.rs
index ac84f7b244f..6370c1e27cf 100644
--- a/test-utils/testlib/src/runtime_utils.rs
+++ b/test-utils/testlib/src/runtime_utils.rs
@@ -5,6 +5,7 @@ use near_primitives::account::Account;
 use near_primitives::hash::{hash, CryptoHash};
 use near_primitives::state_record::StateRecord;
 use near_primitives::types::{AccountId, StateRoot};
+use near_primitives::version::PROTOCOL_VERSION;
 use near_store::test_utils::create_tries;
 use near_store::{ShardTries, TrieUpdate};
 use neard::config::GenesisExt;
@@ -44,7 +45,7 @@ pub fn add_test_contract(genesis: &mut Genesis, account_id: &AccountId) {
     if !is_account_record_found {
         genesis.records.as_mut().push(StateRecord::Account {
             account_id: account_id.clone(),
-            account: Account::new(0, 0, *DEFAULT_TEST_CONTRACT_HASH, 0),
+            account: Account::new(0, 0, *DEFAULT_TEST_CONTRACT_HASH, 0, PROTOCOL_VERSION),
         });
     }
     genesis.records.as_mut().push(StateRecord::Contract {
diff --git a/test-utils/testlib/src/standard_test_cases.rs b/test-utils/testlib/src/standard_test_cases.rs
index 4f606d2deea..7778532db53 100644
--- a/test-utils/testlib/src/standard_test_cases.rs
+++ b/test-utils/testlib/src/standard_test_cases.rs
@@ -3,7 +3,7 @@ use std::sync::Arc;
 use assert_matches::assert_matches;
 use near_crypto::{InMemorySigner, KeyType};
 use near_jsonrpc_primitives::errors::ServerError;
-use near_primitives::account::{AccessKey, AccessKeyPermission, FunctionCallPermission};
+use near_primitives::access_key::{AccessKey, AccessKeyPermission, FunctionCallPermission};
 use near_primitives::checked_feature;
 use near_primitives::errors::{
     ActionError, ActionErrorKind, ContractCallError, InvalidAccessKeyError, InvalidTxError,
diff --git a/test-utils/testlib/src/user/mod.rs b/test-utils/testlib/src/user/mod.rs
index 60fa552655b..fe6426e026b 100644
--- a/test-utils/testlib/src/user/mod.rs
+++ b/test-utils/testlib/src/user/mod.rs
@@ -4,7 +4,7 @@ use futures::{future::LocalBoxFuture, FutureExt};
 
 use near_crypto::{PublicKey, Signer};
 use near_jsonrpc_primitives::errors::ServerError;
-use near_primitives::account::AccessKey;
+use near_primitives::access_key::AccessKey;
 use near_primitives::hash::CryptoHash;
 use near_primitives::receipt::Receipt;
 use near_primitives::transaction::{
diff --git a/test-utils/testlib/src/user/runtime_user.rs b/test-utils/testlib/src/user/runtime_user.rs
index 1aac9fa9943..a15fc0166fd 100644
--- a/test-utils/testlib/src/user/runtime_user.rs
+++ b/test-utils/testlib/src/user/runtime_user.rs
@@ -143,6 +143,8 @@ impl RuntimeUser {
             #[cfg(feature = "protocol_feature_evm")]
             evm_chain_id: TESTNET_EVM_CHAIN_ID,
             profile: Default::default(),
+            #[cfg(feature = "protocol_feature_add_account_versions")]
+            is_mainnet: false,
         }
     }
 
@@ -250,6 +252,8 @@ impl User for RuntimeUser {
             cache: apply_state.cache,
             #[cfg(feature = "protocol_feature_evm")]
             evm_chain_id: TESTNET_EVM_CHAIN_ID,
+            #[cfg(feature = "protocol_feature_add_account_versions")]
+            is_mainnet: false,
         };
         result.result = self
             .trie_viewer
diff --git a/tests/test_errors.rs b/tests/test_errors.rs
index f48d1638418..efa6ba4cbd9 100644
--- a/tests/test_errors.rs
+++ b/tests/test_errors.rs
@@ -4,7 +4,7 @@ use near_chain_configs::Genesis;
 use near_crypto::{InMemorySigner, KeyType};
 use near_logger_utils::init_integration_logger;
 use near_network::test_utils::open_port;
-use near_primitives::account::AccessKey;
+use near_primitives::access_key::AccessKey;
 use near_primitives::errors::{InvalidAccessKeyError, InvalidTxError};
 use near_primitives::transaction::{
     Action, AddKeyAction, CreateAccountAction, SignedTransaction, TransferAction,
diff --git a/utils/storage-usage-delta-calculator/Cargo.toml b/utils/storage-usage-delta-calculator/Cargo.toml
new file mode 100644
index 00000000000..0269687c6b6
--- /dev/null
+++ b/utils/storage-usage-delta-calculator/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "storage-usage-delta-calculator"
+version = "0.1.0"
+authors = ["Egor Kulikov <egor@egork.net>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+near-chain-configs = { path = "../../core/chain-configs" }
+near-primitives = { path = "../../core/primitives" }
+node-runtime = { path = "../../runtime/runtime" }
diff --git a/utils/storage-usage-delta-calculator/src/main.rs b/utils/storage-usage-delta-calculator/src/main.rs
new file mode 100644
index 00000000000..d8f9575b467
--- /dev/null
+++ b/utils/storage-usage-delta-calculator/src/main.rs
@@ -0,0 +1,31 @@
+use near_chain_configs::Genesis;
+use near_primitives::runtime::config::RuntimeConfig;
+use near_primitives::state_record::StateRecord;
+use node_runtime::Runtime;
+use std::fs::OpenOptions;
+use std::io::prelude::*;
+use std::io::Error;
+
+fn main() -> Result<(), Error> {
+    println!("Start");
+
+    let genesis = Genesis::from_file("output.json");
+    let mut writer = OpenOptions::new().append(true).create(true).open("delta.csv").unwrap();
+
+    println!("Genesis read");
+    let storage_usage =
+        Runtime::compute_storage_usage(&genesis.records.0[..], &RuntimeConfig::default());
+    println!("Storage usage calculated");
+    for record in genesis.records.0 {
+        if let StateRecord::Account { account_id, account } = record {
+            let actual_storage_usage = storage_usage.get(account_id.as_str()).unwrap();
+            let saved_storage_usage = account.storage_usage();
+            let delta = actual_storage_usage - saved_storage_usage;
+            if delta != 0 {
+                println!("{},{}", account_id, delta);
+                writeln!(&mut writer, "{},{}", account_id, delta)?;
+            }
+        }
+    }
+    Ok(())
+}