...are important as it is **the transaction proof** which could be verified and identified by any body using the pre-defined encoding-decoding spec of EVM. Usually there are 2 methods to get 2 different kinds of granularity log data. One is **eth_getTransactionReceipt**, the other is **eth_getBlock...
...Item is ERC721 signifies that the contract we are creating imports ERC721 and follows ERC721 contract from openzeppelin
contract GameItem is ERC721 {
constructor() ERC721("GameItem", "ITM") {
// mint an NFT to yourself
_mint(msg.sender, 1);
}
}
```
- 编译合约，打开终端并执行...
...tudy.org/2023/11/24/multipart-payments-on-lightning-network-break-down-amp-and-mmp/#%E5%8D%95%E8%B7%AF%E5%BE%84%E6%94%AF%E4%BB%98 "单路径支付")单路径支付
我们先玩一个思维实验，以更好地理解多路径支付的目的。
假设 Alice 想通过闪电网络给 Bob 支付 1 ...
... URI for each
* token will be the concatenation of the `baseURI` and the `tokenId`.
*/
string _baseTokenURI;
// _price is the price of one LW3Punks NFT
uint256 public _price = 0.01 ether;
// _paused is used to pause the contract in case of...