erc721-enumerable-reader-multicall

Simple contract to read all ids given a set of owner addresses and a set of token addresses for all ERC721Enumerable in a single call. The contract can be deployed using CREATE2 in order to have the same address on all chains.

 

Addresses

Factory: 0xB10CeCcBe00572deE94cF0514581d3695A8Cd596
ERC721EnumerableReaderMulticall: 0x3e7e3d13d7babc56b753c704a1da4c103b8f96f4

 

---

 

🚀 How to use it

const web3 = new Web3(provider)
const contract = new web3.eth.Contract(
[
    {
      "inputs": [
        {
          "internalType": "address[]",
          "name": "_owners",
          "type": "address[]"
        },
        {
          "internalType": "address[]",
          "name": "_tokens",
          "type": "address[]"
        }
      ],
      "name": "idsOf",
      "outputs": [
        {
          "internalType": "uint256[][]",
          "name": "",
          "type": "uint256[][]"
        }
      ],
      "stateMutability": "view",
      "type": "function"
    }
],
'address here'
)
const balances = await contract.methods.idsOf(_owners_, _tokens).call()

 

---

 

✅ Publish & Verify

Create an .env file with the following fields:

MAINNET_PRIVATE_KEY=
ROPSTEN_PRIVATE_KEY=
ROSPTENT_NODE=
ETH_MAINNET_NODE=
ETHERSCAN_API_KEY=
BSC_MAINNET_NODE=
BSC_MAINNET_PRIVATE_KEY=
POLYGON_MAINNET_NODE=
POLYGON_MAINNET_PRIVATE_KEY=
FANTOM_MAINNET_NODE=
FANTOM_MAINNET_PRIVATE_KEY=
AVALANCHEC_MAINNET_NODE=
AVALANCHEC_MAINNET_PRIVATE_KEY=

publish

❍ npx hardhat run --network mainnet scripts/deploy-script.js

verify

❍ npx hardhat verify --network mainnet DEPLOYED_CONTRACT_ADDRESS "Constructor argument 1"