来自 web3 的 MintTo 合同给出错误 - ERC721：转移到非 ERC721Receiver 实施者
MintTo contract from web3 gives error - ERC721: transfer to non ERC721Receiver implementer
我是区块链技术的新手。我正在尝试创建一个合同，然后使用 web3 python 库铸造一个令牌来合同。
我可以创建一个合同。这是 link 在 rinkeby
的合同
https://rinkeby.etherscan.io/address/0x466086b7002d6836c2e4ca05472ded70a7f5213b
每当我尝试为此铸造代币时。我低于错误
web3.exceptions.ContractLogicError: execution reverted: ERC721: transfer to non ERC721Receiver implementer
这是我的铸币代码。
def test_with_setter_only_transfer():
w3 = Web3(Web3.HTTPProvider("https://rinkeby.infura.io/v3/c0e4482bdf9e4f539692666cd56ef4e3"))
w3.middleware_onion.inject(geth_poa_middleware, layer=0)
address = '0x589a1532AAaE84e38345b58C11CF4697Ea89A866'
abi = '[{"inputs":[{"internalType":"address","name":"_proxyRegistryAddress","type":"address"},{"internalType":"string","name":"url","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":false,"internalType":"address","name":"userAddress","type":"address"},{"indexed":false,"internalType":"address payable","name":"relayerAddress","type":"address"},{"indexed":false,"internalType":"bytes","name":"functionSignature","type":"bytes"}],"name":"MetaTransactionExecuted","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":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":[],"name":"ERC712_VERSION","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"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":[],"name":"baseTokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"userAddress","type":"address"},{"internalType":"bytes","name":"functionSignature","type":"bytes"},{"internalType":"bytes32","name":"sigR","type":"bytes32"},{"internalType":"bytes32","name":"sigS","type":"bytes32"},{"internalType":"uint8","name":"sigV","type":"uint8"}],"name":"executeMetaTransaction","outputs":[{"internalType":"bytes","name":"","type":"bytes"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getApproved","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getChainId","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getDomainSeperator","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"user","type":"address"}],"name":"getNonce","outputs":[{"internalType":"uint256","name":"nonce","type":"uint256"}],"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":[{"internalType":"address","name":"_to","type":"address"}],"name":"mintTo","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ownerOf","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","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":"string","name":"counter","type":"string"}],"name":"setCounter","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":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"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"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"}]'
w3.eth.defaultAccount = address
private_key = "905a362c6d17d5b87f7941fa73a3bb08bd7473e226b760437269b017xxxxxxx"
contract = w3.eth.contract(
address='0x466086b7002d6836c2E4Ca05472deD70A7f5213b',
abi=abi,
)
print('Base Token URI: {}'.format(contract.functions.baseTokenURI().call()))
token_id = contract.functions.totalSupply().call()
print('Token ID: {}'.format(token_id))
print('Token URI: {}'.format(contract.functions.tokenURI(token_id).call()))
print(f'block number after deploying : {w3.eth.blockNumber}')
# Change the value of counter and transact
# # update the greeting
tx_hash = contract.functions.mintTo(Web3.toChecksumAddress('0x466086b7002d6836c2E4Ca05472deD70A7f5213b')).buildTransaction()
tx_hash.update({'gas': 20000000})
tx_hash.update({'nonce': w3.eth.getTransactionCount(address)})
signed_tx = w3.eth.account.sign_transaction(tx_hash, private_key)
txn_hash = w3.eth.send_raw_transaction(signed_tx.rawTransaction)
# # Wait for transaction to be mined...
rec = w3.eth.waitForTransactionReceipt(txn_hash)
print(rec)
这是我创建的合约
pragma solidity ^0.8.0;
import "./ERC721Tradable.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
/**
* @title Creature
* Creature - a contract for my non-fungible creatures.
*/
contract Creature is ERC721Tradable {
string _baseURL;
constructor(address _proxyRegistryAddress, string memory url) ERC721Tradable("Creature", "OSC", _proxyRegistryAddress) {
_baseURL = url ;
}
function baseTokenURI() public override view returns (string memory) {
return _baseURL;
}
}
这是 ERC721Tradable 文件
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/Counters.sol";
import "@openzeppelin/contracts/utils/Strings.sol";
import "@openzeppelin/contracts/utils/math/SafeMath.sol";
import "./ContentMixin.sol";
import "./NativeMetaTransaction.sol";
contract OwnableDelegateProxy {}
/**
* Used to delegate ownership of a contract to another address, to save on unneeded transactions to approve contract use for users
*/
contract ProxyRegistry {
mapping(address => OwnableDelegateProxy) public proxies;
}
/**
* @title ERC721Tradable
* ERC721Tradable - ERC721 contract that whitelists a trading address, and has minting functionality.
*/
abstract contract ERC721Tradable is ERC721, ContextMixin, NativeMetaTransaction, Ownable {
using SafeMath for uint256;
using Counters for Counters.Counter;
Counters.Counter private _nextTokenId;
address proxyRegistryAddress;
constructor(
string memory _name,
string memory _symbol,
address _proxyRegistryAddress
) ERC721(_name, _symbol) {
proxyRegistryAddress = _proxyRegistryAddress;
// nextTokenId is initialized to 1, since starting at 0 leads to higher gas cost for the first minter
_nextTokenId.increment();
_initializeEIP712(_name);
}
/**
* @dev Mints a token to an address with a tokenURI.
* @param _to address of the future owner of the token
*/
function mintTo(address _to) public onlyOwner {
uint256 currentTokenId = _nextTokenId.current();
_nextTokenId.increment();
_safeMint(_to, currentTokenId);
}
/**
@dev Returns the total tokens minted so far.
1 is always subtracted from the Counter since it tracks the next available tokenId.
*/
function totalSupply() public view returns (uint256) {
return _nextTokenId.current() - 1;
}
function baseTokenURI() virtual public view returns (string memory);
function tokenURI(uint256 _tokenId) override public view returns (string memory) {
return string(abi.encodePacked(baseTokenURI(), Strings.toString(_tokenId)));
}
/**
* Override isApprovedForAll to whitelist user's OpenSea proxy accounts to enable gas-less listings.
*/
function isApprovedForAll(address owner, address operator)
override
public
view
returns (bool)
{
// Whitelist OpenSea proxy contract for easy trading.
ProxyRegistry proxyRegistry = ProxyRegistry(proxyRegistryAddress);
if (address(proxyRegistry.proxies(owner)) == operator) {
return true;
}
return super.isApprovedForAll(owner, operator);
}
/**
* This is used instead of msg.sender as transactions won't be sent by the original token owner, but by OpenSea.
*/
function _msgSender()
internal
override
view
returns (address sender)
{
return ContextMixin.msgSender();
}
}
我认为第一个错误是当你建立一个交易时，你需要传递一个对象：
tx_hash = contract.functions.mintTo(Web3.toChecksumAddress('0x466086b7002d6836c2E4Ca05472deD70A7f5213b')).buildTransaction({
"chainId": chain_id,
"gasPrice": w3.eth.gas_price,
"from": whatever_address,
"nonce": nonce_value,
})
链 ID
NETWORK_CHAIN_IDS = {
1: "Ethereum Main Network",
3: "Ropsten Test Network",
4: "Rinkeby Test Network",
5: "Goerli Test Network",
42: "Kovan Test Network",
56: "Binance Smart Chain",
1337: "Ganache",
};
我是区块链技术的新手。我正在尝试创建一个合同，然后使用 web3 python 库铸造一个令牌来合同。
我可以创建一个合同。这是 link 在 rinkeby
的合同https://rinkeby.etherscan.io/address/0x466086b7002d6836c2e4ca05472ded70a7f5213b
每当我尝试为此铸造代币时。我低于错误
web3.exceptions.ContractLogicError: execution reverted: ERC721: transfer to non ERC721Receiver implementer
这是我的铸币代码。
def test_with_setter_only_transfer():
w3 = Web3(Web3.HTTPProvider("https://rinkeby.infura.io/v3/c0e4482bdf9e4f539692666cd56ef4e3"))
w3.middleware_onion.inject(geth_poa_middleware, layer=0)
address = '0x589a1532AAaE84e38345b58C11CF4697Ea89A866'
abi = '[{"inputs":[{"internalType":"address","name":"_proxyRegistryAddress","type":"address"},{"internalType":"string","name":"url","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":false,"internalType":"address","name":"userAddress","type":"address"},{"indexed":false,"internalType":"address payable","name":"relayerAddress","type":"address"},{"indexed":false,"internalType":"bytes","name":"functionSignature","type":"bytes"}],"name":"MetaTransactionExecuted","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":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":[],"name":"ERC712_VERSION","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"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":[],"name":"baseTokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"userAddress","type":"address"},{"internalType":"bytes","name":"functionSignature","type":"bytes"},{"internalType":"bytes32","name":"sigR","type":"bytes32"},{"internalType":"bytes32","name":"sigS","type":"bytes32"},{"internalType":"uint8","name":"sigV","type":"uint8"}],"name":"executeMetaTransaction","outputs":[{"internalType":"bytes","name":"","type":"bytes"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getApproved","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getChainId","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getDomainSeperator","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"user","type":"address"}],"name":"getNonce","outputs":[{"internalType":"uint256","name":"nonce","type":"uint256"}],"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":[{"internalType":"address","name":"_to","type":"address"}],"name":"mintTo","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ownerOf","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","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":"string","name":"counter","type":"string"}],"name":"setCounter","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":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"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"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"}]'
w3.eth.defaultAccount = address
private_key = "905a362c6d17d5b87f7941fa73a3bb08bd7473e226b760437269b017xxxxxxx"
contract = w3.eth.contract(
address='0x466086b7002d6836c2E4Ca05472deD70A7f5213b',
abi=abi,
)
print('Base Token URI: {}'.format(contract.functions.baseTokenURI().call()))
token_id = contract.functions.totalSupply().call()
print('Token ID: {}'.format(token_id))
print('Token URI: {}'.format(contract.functions.tokenURI(token_id).call()))
print(f'block number after deploying : {w3.eth.blockNumber}')
# Change the value of counter and transact
# # update the greeting
tx_hash = contract.functions.mintTo(Web3.toChecksumAddress('0x466086b7002d6836c2E4Ca05472deD70A7f5213b')).buildTransaction()
tx_hash.update({'gas': 20000000})
tx_hash.update({'nonce': w3.eth.getTransactionCount(address)})
signed_tx = w3.eth.account.sign_transaction(tx_hash, private_key)
txn_hash = w3.eth.send_raw_transaction(signed_tx.rawTransaction)
# # Wait for transaction to be mined...
rec = w3.eth.waitForTransactionReceipt(txn_hash)
print(rec)
这是我创建的合约
pragma solidity ^0.8.0;
import "./ERC721Tradable.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
/**
* @title Creature
* Creature - a contract for my non-fungible creatures.
*/
contract Creature is ERC721Tradable {
string _baseURL;
constructor(address _proxyRegistryAddress, string memory url) ERC721Tradable("Creature", "OSC", _proxyRegistryAddress) {
_baseURL = url ;
}
function baseTokenURI() public override view returns (string memory) {
return _baseURL;
}
}
这是 ERC721Tradable 文件
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/Counters.sol";
import "@openzeppelin/contracts/utils/Strings.sol";
import "@openzeppelin/contracts/utils/math/SafeMath.sol";
import "./ContentMixin.sol";
import "./NativeMetaTransaction.sol";
contract OwnableDelegateProxy {}
/**
* Used to delegate ownership of a contract to another address, to save on unneeded transactions to approve contract use for users
*/
contract ProxyRegistry {
mapping(address => OwnableDelegateProxy) public proxies;
}
/**
* @title ERC721Tradable
* ERC721Tradable - ERC721 contract that whitelists a trading address, and has minting functionality.
*/
abstract contract ERC721Tradable is ERC721, ContextMixin, NativeMetaTransaction, Ownable {
using SafeMath for uint256;
using Counters for Counters.Counter;
Counters.Counter private _nextTokenId;
address proxyRegistryAddress;
constructor(
string memory _name,
string memory _symbol,
address _proxyRegistryAddress
) ERC721(_name, _symbol) {
proxyRegistryAddress = _proxyRegistryAddress;
// nextTokenId is initialized to 1, since starting at 0 leads to higher gas cost for the first minter
_nextTokenId.increment();
_initializeEIP712(_name);
}
/**
* @dev Mints a token to an address with a tokenURI.
* @param _to address of the future owner of the token
*/
function mintTo(address _to) public onlyOwner {
uint256 currentTokenId = _nextTokenId.current();
_nextTokenId.increment();
_safeMint(_to, currentTokenId);
}
/**
@dev Returns the total tokens minted so far.
1 is always subtracted from the Counter since it tracks the next available tokenId.
*/
function totalSupply() public view returns (uint256) {
return _nextTokenId.current() - 1;
}
function baseTokenURI() virtual public view returns (string memory);
function tokenURI(uint256 _tokenId) override public view returns (string memory) {
return string(abi.encodePacked(baseTokenURI(), Strings.toString(_tokenId)));
}
/**
* Override isApprovedForAll to whitelist user's OpenSea proxy accounts to enable gas-less listings.
*/
function isApprovedForAll(address owner, address operator)
override
public
view
returns (bool)
{
// Whitelist OpenSea proxy contract for easy trading.
ProxyRegistry proxyRegistry = ProxyRegistry(proxyRegistryAddress);
if (address(proxyRegistry.proxies(owner)) == operator) {
return true;
}
return super.isApprovedForAll(owner, operator);
}
/**
* This is used instead of msg.sender as transactions won't be sent by the original token owner, but by OpenSea.
*/
function _msgSender()
internal
override
view
returns (address sender)
{
return ContextMixin.msgSender();
}
}
我认为第一个错误是当你建立一个交易时，你需要传递一个对象：
tx_hash = contract.functions.mintTo(Web3.toChecksumAddress('0x466086b7002d6836c2E4Ca05472deD70A7f5213b')).buildTransaction({
"chainId": chain_id,
"gasPrice": w3.eth.gas_price,
"from": whatever_address,
"nonce": nonce_value,
})
链 ID
NETWORK_CHAIN_IDS = {
1: "Ethereum Main Network",
3: "Ropsten Test Network",
4: "Rinkeby Test Network",
5: "Goerli Test Network",
42: "Kovan Test Network",
56: "Binance Smart Chain",
1337: "Ganache",
};