diff --git a/source/delegate/scripts/migrate-abis/4-1-1.js b/source/delegate/scripts/migrate-abis/4-1-1.js
deleted file mode 100644
index 27293305e..000000000
--- a/source/delegate/scripts/migrate-abis/4-1-1.js
+++ /dev/null
@@ -1,416 +0,0 @@
-module.exports = {
-  abi: [
-    {
-      inputs: [
-        { internalType: 'uint256', name: '_scale', type: 'uint256' },
-        { internalType: 'uint256', name: '_max', type: 'uint256' },
-      ],
-      stateMutability: 'nonpayable',
-      type: 'constructor',
-    },
-    {
-      inputs: [{ internalType: 'address', name: '', type: 'address' }],
-      name: 'AddressInvalid',
-      type: 'error',
-    },
-    {
-      inputs: [{ internalType: 'address', name: '', type: 'address' }],
-      name: 'AdminNotSet',
-      type: 'error',
-    },
-    {
-      inputs: [{ internalType: 'uint256', name: '', type: 'uint256' }],
-      name: 'AmountInsufficient',
-      type: 'error',
-    },
-    { inputs: [], name: 'ClaimAlreadyUsed', type: 'error' },
-    { inputs: [], name: 'ClaimsNotProvided', type: 'error' },
-    {
-      inputs: [{ internalType: 'uint256', name: '', type: 'uint256' }],
-      name: 'MaxTooHigh',
-      type: 'error',
-    },
-    {
-      inputs: [
-        { internalType: 'bytes32', name: '', type: 'bytes32' },
-        { internalType: 'bytes32', name: '', type: 'bytes32' },
-      ],
-      name: 'ProofInvalid',
-      type: 'error',
-    },
-    {
-      inputs: [{ internalType: 'uint256', name: '', type: 'uint256' }],
-      name: 'ScaleTooHigh',
-      type: 'error',
-    },
-    {
-      inputs: [{ internalType: 'bytes32', name: '', type: 'bytes32' }],
-      name: 'TreeNotEnabled',
-      type: 'error',
-    },
-    { inputs: [], name: 'Unauthorized', type: 'error' },
-    {
-      anonymous: false,
-      inputs: [
-        {
-          indexed: false,
-          internalType: 'address[]',
-          name: 'tokens',
-          type: 'address[]',
-        },
-        {
-          indexed: false,
-          internalType: 'address',
-          name: 'dest',
-          type: 'address',
-        },
-      ],
-      name: 'DrainTo',
-      type: 'event',
-    },
-    {
-      anonymous: false,
-      inputs: [
-        {
-          indexed: false,
-          internalType: 'bytes32',
-          name: 'tree',
-          type: 'bytes32',
-        },
-        {
-          indexed: false,
-          internalType: 'bytes32',
-          name: 'root',
-          type: 'bytes32',
-        },
-      ],
-      name: 'Enable',
-      type: 'event',
-    },
-    {
-      anonymous: false,
-      inputs: [
-        {
-          indexed: true,
-          internalType: 'address',
-          name: 'previousOwner',
-          type: 'address',
-        },
-        {
-          indexed: true,
-          internalType: 'address',
-          name: 'newOwner',
-          type: 'address',
-        },
-      ],
-      name: 'OwnershipTransferStarted',
-      type: 'event',
-    },
-    {
-      anonymous: false,
-      inputs: [
-        {
-          indexed: true,
-          internalType: 'address',
-          name: 'previousOwner',
-          type: 'address',
-        },
-        {
-          indexed: true,
-          internalType: 'address',
-          name: 'newOwner',
-          type: 'address',
-        },
-      ],
-      name: 'OwnershipTransferred',
-      type: 'event',
-    },
-    {
-      anonymous: false,
-      inputs: [
-        {
-          indexed: false,
-          internalType: 'address',
-          name: 'admin',
-          type: 'address',
-        },
-      ],
-      name: 'SetAdmin',
-      type: 'event',
-    },
-    {
-      anonymous: false,
-      inputs: [
-        {
-          indexed: false,
-          internalType: 'uint256',
-          name: 'max',
-          type: 'uint256',
-        },
-      ],
-      name: 'SetMax',
-      type: 'event',
-    },
-    {
-      anonymous: false,
-      inputs: [
-        {
-          indexed: false,
-          internalType: 'uint256',
-          name: 'scale',
-          type: 'uint256',
-        },
-      ],
-      name: 'SetScale',
-      type: 'event',
-    },
-    {
-      anonymous: false,
-      inputs: [
-        {
-          indexed: false,
-          internalType: 'address',
-          name: 'admin',
-          type: 'address',
-        },
-      ],
-      name: 'UnsetAdmin',
-      type: 'event',
-    },
-    {
-      anonymous: false,
-      inputs: [
-        {
-          indexed: false,
-          internalType: 'address',
-          name: 'account',
-          type: 'address',
-        },
-        {
-          indexed: false,
-          internalType: 'bytes32',
-          name: 'tree',
-          type: 'bytes32',
-        },
-      ],
-      name: 'UseClaim',
-      type: 'event',
-    },
-    {
-      anonymous: false,
-      inputs: [
-        {
-          indexed: false,
-          internalType: 'address',
-          name: 'account',
-          type: 'address',
-        },
-        {
-          indexed: false,
-          internalType: 'address',
-          name: 'recipient',
-          type: 'address',
-        },
-        {
-          indexed: false,
-          internalType: 'address',
-          name: 'token',
-          type: 'address',
-        },
-        {
-          indexed: false,
-          internalType: 'uint256',
-          name: 'amount',
-          type: 'uint256',
-        },
-      ],
-      name: 'Withdraw',
-      type: 'event',
-    },
-    {
-      inputs: [],
-      name: 'acceptOwnership',
-      outputs: [],
-      stateMutability: 'nonpayable',
-      type: 'function',
-    },
-    {
-      inputs: [{ internalType: 'address', name: '', type: 'address' }],
-      name: 'admins',
-      outputs: [{ internalType: 'bool', name: '', type: 'bool' }],
-      stateMutability: 'view',
-      type: 'function',
-    },
-    {
-      inputs: [
-        { internalType: 'uint256', name: '_value', type: 'uint256' },
-        { internalType: 'address', name: '_token', type: 'address' },
-      ],
-      name: 'calculate',
-      outputs: [{ internalType: 'uint256', name: '', type: 'uint256' }],
-      stateMutability: 'view',
-      type: 'function',
-    },
-    {
-      inputs: [
-        { internalType: 'bytes32', name: '', type: 'bytes32' },
-        { internalType: 'address', name: '', type: 'address' },
-      ],
-      name: 'claimed',
-      outputs: [{ internalType: 'bool', name: '', type: 'bool' }],
-      stateMutability: 'view',
-      type: 'function',
-    },
-    {
-      inputs: [
-        { internalType: 'address[]', name: '_tokens', type: 'address[]' },
-        { internalType: 'address', name: '_dest', type: 'address' },
-      ],
-      name: 'drainTo',
-      outputs: [],
-      stateMutability: 'nonpayable',
-      type: 'function',
-    },
-    {
-      inputs: [
-        { internalType: 'bytes32', name: '_tree', type: 'bytes32' },
-        { internalType: 'bytes32', name: '_root', type: 'bytes32' },
-      ],
-      name: 'enable',
-      outputs: [],
-      stateMutability: 'nonpayable',
-      type: 'function',
-    },
-    {
-      inputs: [
-        { internalType: 'bytes32', name: '_tree', type: 'bytes32' },
-        { internalType: 'bytes32', name: '_root', type: 'bytes32' },
-        { internalType: 'address[]', name: '_accounts', type: 'address[]' },
-      ],
-      name: 'enableAndSetClaimed',
-      outputs: [],
-      stateMutability: 'nonpayable',
-      type: 'function',
-    },
-    {
-      inputs: [
-        { internalType: 'address', name: '_account', type: 'address' },
-        { internalType: 'bytes32[]', name: '_trees', type: 'bytes32[]' },
-      ],
-      name: 'getStatus',
-      outputs: [{ internalType: 'bool[]', name: '', type: 'bool[]' }],
-      stateMutability: 'view',
-      type: 'function',
-    },
-    {
-      inputs: [],
-      name: 'max',
-      outputs: [{ internalType: 'uint256', name: '', type: 'uint256' }],
-      stateMutability: 'view',
-      type: 'function',
-    },
-    {
-      inputs: [],
-      name: 'owner',
-      outputs: [{ internalType: 'address', name: '', type: 'address' }],
-      stateMutability: 'view',
-      type: 'function',
-    },
-    {
-      inputs: [],
-      name: 'pendingOwner',
-      outputs: [{ internalType: 'address', name: '', type: 'address' }],
-      stateMutability: 'view',
-      type: 'function',
-    },
-    {
-      inputs: [],
-      name: 'renounceOwnership',
-      outputs: [],
-      stateMutability: 'nonpayable',
-      type: 'function',
-    },
-    {
-      inputs: [{ internalType: 'bytes32', name: '', type: 'bytes32' }],
-      name: 'rootsByTree',
-      outputs: [{ internalType: 'bytes32', name: '', type: 'bytes32' }],
-      stateMutability: 'view',
-      type: 'function',
-    },
-    {
-      inputs: [],
-      name: 'scale',
-      outputs: [{ internalType: 'uint256', name: '', type: 'uint256' }],
-      stateMutability: 'view',
-      type: 'function',
-    },
-    {
-      inputs: [{ internalType: 'address', name: '_admin', type: 'address' }],
-      name: 'setAdmin',
-      outputs: [],
-      stateMutability: 'nonpayable',
-      type: 'function',
-    },
-    {
-      inputs: [{ internalType: 'uint256', name: '_max', type: 'uint256' }],
-      name: 'setMax',
-      outputs: [],
-      stateMutability: 'nonpayable',
-      type: 'function',
-    },
-    {
-      inputs: [{ internalType: 'uint256', name: '_scale', type: 'uint256' }],
-      name: 'setScale',
-      outputs: [],
-      stateMutability: 'nonpayable',
-      type: 'function',
-    },
-    {
-      inputs: [{ internalType: 'address', name: 'newOwner', type: 'address' }],
-      name: 'transferOwnership',
-      outputs: [],
-      stateMutability: 'nonpayable',
-      type: 'function',
-    },
-    {
-      inputs: [{ internalType: 'address', name: '_admin', type: 'address' }],
-      name: 'unsetAdmin',
-      outputs: [],
-      stateMutability: 'nonpayable',
-      type: 'function',
-    },
-    {
-      inputs: [
-        { internalType: 'address', name: '_claimant', type: 'address' },
-        { internalType: 'bytes32', name: '_root', type: 'bytes32' },
-        { internalType: 'uint256', name: '_value', type: 'uint256' },
-        { internalType: 'bytes32[]', name: '_proof', type: 'bytes32[]' },
-      ],
-      name: 'verify',
-      outputs: [{ internalType: 'bool', name: '', type: 'bool' }],
-      stateMutability: 'pure',
-      type: 'function',
-    },
-    {
-      inputs: [
-        {
-          components: [
-            { internalType: 'bytes32', name: 'tree', type: 'bytes32' },
-            { internalType: 'uint256', name: 'value', type: 'uint256' },
-            { internalType: 'bytes32[]', name: 'proof', type: 'bytes32[]' },
-          ],
-          internalType: 'struct IPool.Claim[]',
-          name: '_claims',
-          type: 'tuple[]',
-        },
-        { internalType: 'address', name: '_token', type: 'address' },
-        { internalType: 'uint256', name: '_minimum', type: 'uint256' },
-        { internalType: 'address', name: '_recipient', type: 'address' },
-      ],
-      name: 'withdraw',
-      outputs: [{ internalType: 'uint256', name: '_amount', type: 'uint256' }],
-      stateMutability: 'nonpayable',
-      type: 'function',
-    },
-  ],
-}
diff --git a/tools/utils/src/abis/ERC1155.json b/tools/utils/src/abis/ERC1155.json
deleted file mode 100644
index 8486b3605..000000000
--- a/tools/utils/src/abis/ERC1155.json
+++ /dev/null
@@ -1,334 +0,0 @@
-{
-  "_format": "hh-sol-artifact-1",
-  "contractName": "ERC1155",
-  "sourceName": "contracts/token/ERC1155/ERC1155.sol",
-  "abi": [
-    {
-      "inputs": [
-        {
-          "internalType": "string",
-          "name": "uri_",
-          "type": "string"
-        }
-      ],
-      "stateMutability": "nonpayable",
-      "type": "constructor"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": true,
-          "internalType": "address",
-          "name": "account",
-          "type": "address"
-        },
-        {
-          "indexed": true,
-          "internalType": "address",
-          "name": "operator",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "internalType": "bool",
-          "name": "approved",
-          "type": "bool"
-        }
-      ],
-      "name": "ApprovalForAll",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": true,
-          "internalType": "address",
-          "name": "operator",
-          "type": "address"
-        },
-        {
-          "indexed": true,
-          "internalType": "address",
-          "name": "from",
-          "type": "address"
-        },
-        {
-          "indexed": true,
-          "internalType": "address",
-          "name": "to",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "internalType": "uint256[]",
-          "name": "ids",
-          "type": "uint256[]"
-        },
-        {
-          "indexed": false,
-          "internalType": "uint256[]",
-          "name": "values",
-          "type": "uint256[]"
-        }
-      ],
-      "name": "TransferBatch",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": true,
-          "internalType": "address",
-          "name": "operator",
-          "type": "address"
-        },
-        {
-          "indexed": true,
-          "internalType": "address",
-          "name": "from",
-          "type": "address"
-        },
-        {
-          "indexed": true,
-          "internalType": "address",
-          "name": "to",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "internalType": "uint256",
-          "name": "id",
-          "type": "uint256"
-        },
-        {
-          "indexed": false,
-          "internalType": "uint256",
-          "name": "value",
-          "type": "uint256"
-        }
-      ],
-      "name": "TransferSingle",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": false,
-          "internalType": "string",
-          "name": "value",
-          "type": "string"
-        },
-        {
-          "indexed": true,
-          "internalType": "uint256",
-          "name": "id",
-          "type": "uint256"
-        }
-      ],
-      "name": "URI",
-      "type": "event"
-    },
-    {
-      "inputs": [
-        {
-          "internalType": "address",
-          "name": "account",
-          "type": "address"
-        },
-        {
-          "internalType": "uint256",
-          "name": "id",
-          "type": "uint256"
-        }
-      ],
-      "name": "balanceOf",
-      "outputs": [
-        {
-          "internalType": "uint256",
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "inputs": [
-        {
-          "internalType": "address[]",
-          "name": "accounts",
-          "type": "address[]"
-        },
-        {
-          "internalType": "uint256[]",
-          "name": "ids",
-          "type": "uint256[]"
-        }
-      ],
-      "name": "balanceOfBatch",
-      "outputs": [
-        {
-          "internalType": "uint256[]",
-          "name": "",
-          "type": "uint256[]"
-        }
-      ],
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "inputs": [
-        {
-          "internalType": "address",
-          "name": "account",
-          "type": "address"
-        },
-        {
-          "internalType": "address",
-          "name": "operator",
-          "type": "address"
-        }
-      ],
-      "name": "isApprovedForAll",
-      "outputs": [
-        {
-          "internalType": "bool",
-          "name": "",
-          "type": "bool"
-        }
-      ],
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "inputs": [
-        {
-          "internalType": "address",
-          "name": "from",
-          "type": "address"
-        },
-        {
-          "internalType": "address",
-          "name": "to",
-          "type": "address"
-        },
-        {
-          "internalType": "uint256[]",
-          "name": "ids",
-          "type": "uint256[]"
-        },
-        {
-          "internalType": "uint256[]",
-          "name": "amounts",
-          "type": "uint256[]"
-        },
-        {
-          "internalType": "bytes",
-          "name": "data",
-          "type": "bytes"
-        }
-      ],
-      "name": "safeBatchTransferFrom",
-      "outputs": [],
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "inputs": [
-        {
-          "internalType": "address",
-          "name": "from",
-          "type": "address"
-        },
-        {
-          "internalType": "address",
-          "name": "to",
-          "type": "address"
-        },
-        {
-          "internalType": "uint256",
-          "name": "id",
-          "type": "uint256"
-        },
-        {
-          "internalType": "uint256",
-          "name": "amount",
-          "type": "uint256"
-        },
-        {
-          "internalType": "bytes",
-          "name": "data",
-          "type": "bytes"
-        }
-      ],
-      "name": "safeTransferFrom",
-      "outputs": [],
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "inputs": [
-        {
-          "internalType": "address",
-          "name": "operator",
-          "type": "address"
-        },
-        {
-          "internalType": "bool",
-          "name": "approved",
-          "type": "bool"
-        }
-      ],
-      "name": "setApprovalForAll",
-      "outputs": [],
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "inputs": [
-        {
-          "internalType": "bytes4",
-          "name": "interfaceId",
-          "type": "bytes4"
-        }
-      ],
-      "name": "supportsInterface",
-      "outputs": [
-        {
-          "internalType": "bool",
-          "name": "",
-          "type": "bool"
-        }
-      ],
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "inputs": [
-        {
-          "internalType": "uint256",
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "name": "uri",
-      "outputs": [
-        {
-          "internalType": "string",
-          "name": "",
-          "type": "string"
-        }
-      ],
-      "stateMutability": "view",
-      "type": "function"
-    }
-  ],
-  "bytecode": 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-  "linkReferences": {},
-  "deployedLinkReferences": {}
-}
diff --git a/tools/utils/src/abis/ERC165.json b/tools/utils/src/abis/ERC165.json
deleted file mode 100644
index e1bfd6b4f..000000000
--- a/tools/utils/src/abis/ERC165.json
+++ /dev/null
@@ -1,30 +0,0 @@
-{
-  "_format": "hh-sol-artifact-1",
-  "contractName": "ERC165",
-  "sourceName": "contracts/utils/introspection/ERC165.sol",
-  "abi": [
-    {
-      "inputs": [
-        {
-          "internalType": "bytes4",
-          "name": "interfaceId",
-          "type": "bytes4"
-        }
-      ],
-      "name": "supportsInterface",
-      "outputs": [
-        {
-          "internalType": "bool",
-          "name": "",
-          "type": "bool"
-        }
-      ],
-      "stateMutability": "view",
-      "type": "function"
-    }
-  ],
-  "bytecode": "0x",
-  "deployedBytecode": "0x",
-  "linkReferences": {},
-  "deployedLinkReferences": {}
-}
diff --git a/tools/utils/src/abis/ERC20.json b/tools/utils/src/abis/ERC20.json
deleted file mode 100644
index e1f5a7ac6..000000000
--- a/tools/utils/src/abis/ERC20.json
+++ /dev/null
@@ -1,297 +0,0 @@
-{
-  "_format": "hh-sol-artifact-1",
-  "contractName": "ERC20",
-  "sourceName": "contracts/token/ERC20/ERC20.sol",
-  "abi": [
-    {
-      "inputs": [
-        {
-          "internalType": "string",
-          "name": "name_",
-          "type": "string"
-        },
-        {
-          "internalType": "string",
-          "name": "symbol_",
-          "type": "string"
-        }
-      ],
-      "stateMutability": "nonpayable",
-      "type": "constructor"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": true,
-          "internalType": "address",
-          "name": "owner",
-          "type": "address"
-        },
-        {
-          "indexed": true,
-          "internalType": "address",
-          "name": "spender",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "internalType": "uint256",
-          "name": "value",
-          "type": "uint256"
-        }
-      ],
-      "name": "Approval",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": true,
-          "internalType": "address",
-          "name": "from",
-          "type": "address"
-        },
-        {
-          "indexed": true,
-          "internalType": "address",
-          "name": "to",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "internalType": "uint256",
-          "name": "value",
-          "type": "uint256"
-        }
-      ],
-      "name": "Transfer",
-      "type": "event"
-    },
-    {
-      "inputs": [
-        {
-          "internalType": "address",
-          "name": "owner",
-          "type": "address"
-        },
-        {
-          "internalType": "address",
-          "name": "spender",
-          "type": "address"
-        }
-      ],
-      "name": "allowance",
-      "outputs": [
-        {
-          "internalType": "uint256",
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "inputs": [
-        {
-          "internalType": "address",
-          "name": "spender",
-          "type": "address"
-        },
-        {
-          "internalType": "uint256",
-          "name": "amount",
-          "type": "uint256"
-        }
-      ],
-      "name": "approve",
-      "outputs": [
-        {
-          "internalType": "bool",
-          "name": "",
-          "type": "bool"
-        }
-      ],
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "inputs": [
-        {
-          "internalType": "address",
-          "name": "account",
-          "type": "address"
-        }
-      ],
-      "name": "balanceOf",
-      "outputs": [
-        {
-          "internalType": "uint256",
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "inputs": [],
-      "name": "decimals",
-      "outputs": [
-        {
-          "internalType": "uint8",
-          "name": "",
-          "type": "uint8"
-        }
-      ],
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "inputs": [
-        {
-          "internalType": "address",
-          "name": "spender",
-          "type": "address"
-        },
-        {
-          "internalType": "uint256",
-          "name": "subtractedValue",
-          "type": "uint256"
-        }
-      ],
-      "name": "decreaseAllowance",
-      "outputs": [
-        {
-          "internalType": "bool",
-          "name": "",
-          "type": "bool"
-        }
-      ],
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "inputs": [
-        {
-          "internalType": "address",
-          "name": "spender",
-          "type": "address"
-        },
-        {
-          "internalType": "uint256",
-          "name": "addedValue",
-          "type": "uint256"
-        }
-      ],
-      "name": "increaseAllowance",
-      "outputs": [
-        {
-          "internalType": "bool",
-          "name": "",
-          "type": "bool"
-        }
-      ],
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "inputs": [],
-      "name": "name",
-      "outputs": [
-        {
-          "internalType": "string",
-          "name": "",
-          "type": "string"
-        }
-      ],
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "inputs": [],
-      "name": "symbol",
-      "outputs": [
-        {
-          "internalType": "string",
-          "name": "",
-          "type": "string"
-        }
-      ],
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "inputs": [],
-      "name": "totalSupply",
-      "outputs": [
-        {
-          "internalType": "uint256",
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "inputs": [
-        {
-          "internalType": "address",
-          "name": "to",
-          "type": "address"
-        },
-        {
-          "internalType": "uint256",
-          "name": "amount",
-          "type": "uint256"
-        }
-      ],
-      "name": "transfer",
-      "outputs": [
-        {
-          "internalType": "bool",
-          "name": "",
-          "type": "bool"
-        }
-      ],
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "inputs": [
-        {
-          "internalType": "address",
-          "name": "from",
-          "type": "address"
-        },
-        {
-          "internalType": "address",
-          "name": "to",
-          "type": "address"
-        },
-        {
-          "internalType": "uint256",
-          "name": "amount",
-          "type": "uint256"
-        }
-      ],
-      "name": "transferFrom",
-      "outputs": [
-        {
-          "internalType": "bool",
-          "name": "",
-          "type": "bool"
-        }
-      ],
-      "stateMutability": "nonpayable",
-      "type": "function"
-    }
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-}
diff --git a/tools/utils/src/abis/ERC721.json b/tools/utils/src/abis/ERC721.json
deleted file mode 100644
index 789fdef4b..000000000
--- a/tools/utils/src/abis/ERC721.json
+++ /dev/null
@@ -1,357 +0,0 @@
-{
-  "_format": "hh-sol-artifact-1",
-  "contractName": "ERC721",
-  "sourceName": "contracts/token/ERC721/ERC721.sol",
-  "abi": [
-    {
-      "inputs": [
-        {
-          "internalType": "string",
-          "name": "name_",
-          "type": "string"
-        },
-        {
-          "internalType": "string",
-          "name": "symbol_",
-          "type": "string"
-        }
-      ],
-      "stateMutability": "nonpayable",
-      "type": "constructor"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": true,
-          "internalType": "address",
-          "name": "owner",
-          "type": "address"
-        },
-        {
-          "indexed": true,
-          "internalType": "address",
-          "name": "approved",
-          "type": "address"
-        },
-        {
-          "indexed": true,
-          "internalType": "uint256",
-          "name": "tokenId",
-          "type": "uint256"
-        }
-      ],
-      "name": "Approval",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": true,
-          "internalType": "address",
-          "name": "owner",
-          "type": "address"
-        },
-        {
-          "indexed": true,
-          "internalType": "address",
-          "name": "operator",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "internalType": "bool",
-          "name": "approved",
-          "type": "bool"
-        }
-      ],
-      "name": "ApprovalForAll",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": true,
-          "internalType": "address",
-          "name": "from",
-          "type": "address"
-        },
-        {
-          "indexed": true,
-          "internalType": "address",
-          "name": "to",
-          "type": "address"
-        },
-        {
-          "indexed": true,
-          "internalType": "uint256",
-          "name": "tokenId",
-          "type": "uint256"
-        }
-      ],
-      "name": "Transfer",
-      "type": "event"
-    },
-    {
-      "inputs": [
-        {
-          "internalType": "address",
-          "name": "to",
-          "type": "address"
-        },
-        {
-          "internalType": "uint256",
-          "name": "tokenId",
-          "type": "uint256"
-        }
-      ],
-      "name": "approve",
-      "outputs": [],
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "inputs": [
-        {
-          "internalType": "address",
-          "name": "owner",
-          "type": "address"
-        }
-      ],
-      "name": "balanceOf",
-      "outputs": [
-        {
-          "internalType": "uint256",
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "inputs": [
-        {
-          "internalType": "uint256",
-          "name": "tokenId",
-          "type": "uint256"
-        }
-      ],
-      "name": "getApproved",
-      "outputs": [
-        {
-          "internalType": "address",
-          "name": "",
-          "type": "address"
-        }
-      ],
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "inputs": [
-        {
-          "internalType": "address",
-          "name": "owner",
-          "type": "address"
-        },
-        {
-          "internalType": "address",
-          "name": "operator",
-          "type": "address"
-        }
-      ],
-      "name": "isApprovedForAll",
-      "outputs": [
-        {
-          "internalType": "bool",
-          "name": "",
-          "type": "bool"
-        }
-      ],
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "inputs": [],
-      "name": "name",
-      "outputs": [
-        {
-          "internalType": "string",
-          "name": "",
-          "type": "string"
-        }
-      ],
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "inputs": [
-        {
-          "internalType": "uint256",
-          "name": "tokenId",
-          "type": "uint256"
-        }
-      ],
-      "name": "ownerOf",
-      "outputs": [
-        {
-          "internalType": "address",
-          "name": "",
-          "type": "address"
-        }
-      ],
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "inputs": [
-        {
-          "internalType": "address",
-          "name": "from",
-          "type": "address"
-        },
-        {
-          "internalType": "address",
-          "name": "to",
-          "type": "address"
-        },
-        {
-          "internalType": "uint256",
-          "name": "tokenId",
-          "type": "uint256"
-        }
-      ],
-      "name": "safeTransferFrom",
-      "outputs": [],
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "inputs": [
-        {
-          "internalType": "address",
-          "name": "from",
-          "type": "address"
-        },
-        {
-          "internalType": "address",
-          "name": "to",
-          "type": "address"
-        },
-        {
-          "internalType": "uint256",
-          "name": "tokenId",
-          "type": "uint256"
-        },
-        {
-          "internalType": "bytes",
-          "name": "data",
-          "type": "bytes"
-        }
-      ],
-      "name": "safeTransferFrom",
-      "outputs": [],
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "inputs": [
-        {
-          "internalType": "address",
-          "name": "operator",
-          "type": "address"
-        },
-        {
-          "internalType": "bool",
-          "name": "approved",
-          "type": "bool"
-        }
-      ],
-      "name": "setApprovalForAll",
-      "outputs": [],
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "inputs": [
-        {
-          "internalType": "bytes4",
-          "name": "interfaceId",
-          "type": "bytes4"
-        }
-      ],
-      "name": "supportsInterface",
-      "outputs": [
-        {
-          "internalType": "bool",
-          "name": "",
-          "type": "bool"
-        }
-      ],
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "inputs": [],
-      "name": "symbol",
-      "outputs": [
-        {
-          "internalType": "string",
-          "name": "",
-          "type": "string"
-        }
-      ],
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "inputs": [
-        {
-          "internalType": "uint256",
-          "name": "tokenId",
-          "type": "uint256"
-        }
-      ],
-      "name": "tokenURI",
-      "outputs": [
-        {
-          "internalType": "string",
-          "name": "",
-          "type": "string"
-        }
-      ],
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "inputs": [
-        {
-          "internalType": "address",
-          "name": "from",
-          "type": "address"
-        },
-        {
-          "internalType": "address",
-          "name": "to",
-          "type": "address"
-        },
-        {
-          "internalType": "uint256",
-          "name": "tokenId",
-          "type": "uint256"
-        }
-      ],
-      "name": "transferFrom",
-      "outputs": [],
-      "stateMutability": "nonpayable",
-      "type": "function"
-    }
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-  "linkReferences": {},
-  "deployedLinkReferences": {}
-}
diff --git a/tools/utils/src/metadata.ts b/tools/utils/src/metadata.ts
index d882fb6d8..bdc65ba69 100644
--- a/tools/utils/src/metadata.ts
+++ b/tools/utils/src/metadata.ts
@@ -22,10 +22,10 @@ const AIRSWAP_SYMBOL = 'AST'
 const DEFAULT_NAME = 'Unknown NFT'
 const DEFAULT_IPFS_URI = 'https://ipfs.io/ipfs/'
 
-import { abi as ERC165_ABI } from './abis/ERC165.json'
-import { abi as ERC20_ABI } from './abis/ERC20.json'
-import { abi as ERC721_ABI } from './abis/ERC721.json'
-import { abi as ERC1155_ABI } from './abis/ERC1155.json'
+import { abi as ERC165_ABI } from '@openzeppelin/contracts/build/contracts/ERC165.json'
+import { abi as ERC20_ABI } from '@openzeppelin/contracts/build/contracts/ERC20.json'
+import { abi as ERC721_ABI } from '@openzeppelin/contracts/build/contracts/ERC721.json'
+import { abi as ERC1155_ABI } from '@openzeppelin/contracts/build/contracts/ERC1155.json'
 
 export async function getKnownTokens(
   chainId: number
diff --git a/tools/utils/src/swap-erc20.ts b/tools/utils/src/swap-erc20.ts
index 98568fece..c41783e78 100644
--- a/tools/utils/src/swap-erc20.ts
+++ b/tools/utils/src/swap-erc20.ts
@@ -7,7 +7,7 @@ import {
   SignTypedDataVersion,
 } from '@metamask/eth-sig-util'
 
-import { abi as ERC20_ABI } from './abis/ERC20.json'
+import { abi as ERC20_ABI } from '@openzeppelin/contracts/build/contracts/ERC20.json'
 const erc20Interface = new ethers.utils.Interface(ERC20_ABI)
 
 import {