Operator Allowlist

import "@imtbl/contracts/contracts/allowlist/OperatorAllowlistEnforced.sol";

contract MyNFT is ERC721, OperatorAllowlistEnforced {
    constructor(address allowlist) {
        _setOperatorAllowlistRegistry(allowlist);
    }
    
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 tokenId
    ) internal override {
        // Check operator allowlist for transfers
        if (from != address(0) && to != address(0)) {
            require(
                _isAllowlisted(msg.sender),
                "Operator not allowlisted"
            );
        }
        super._beforeTokenTransfer(from, to, tokenId);
    }
}

# Get testnet address
curl https://api.sandbox.immutable.com/v1/chains | jq '.result[] | select(.name == "imtbl-zkevm-testnet") | .operator_allowlist_address'

# Get mainnet address  
curl https://api.immutable.com/v1/chains | jq '.result[] | select(.name == "imtbl-zkevm-mainnet") | .operator_allowlist_address'

interface IOperatorAllowlist {
    /// @notice Check if an address is allowlisted
    /// @param target The address to check
    /// @return bool True if allowlisted
    function isAllowlisted(address target) external view returns (bool);
}