This contract allows the number of specific ERC721 holdings on L1 to be checked from L2.
ERC721 contracts and block id on L1 must be specified in order for a snapshot-like implementation to be validated on L1.
npx hardhat run scripts/deploy.js
npx hardhat verify --network goerliOptimism [CONTRACT ADDRESS]Optimism goerli: 0x9697aA1661283845489209be97E5eE37532bd897