contract MyNFT is ERC721, Ownable { using Counters for Counters.Counter; Counters.Counter private _tokenIdCounter; constructor() ERC721("MyNFT", "MNFT") {} function mintNFT(address to) public onlyOwner { uint256 tokenId = _tokenIdCounter.current(); _tokenIdCounter.increment(); _mint(to, ...
Counterparty提供了一个名为Counterwallet的本地钱包。但是同样也可以采用其他的替代方案来存储Rare Pepes或XCP代币等资产,包括: FreeWallet:一个免费的开源钱包,支持比特币和Counterparty。通过FreeWallet,用户可以发送和接收BTC和代币,创建和发行代币,签名和广播消息,并支持多个地址。该应用适用于 iOS和Android 设备,也可...
index A counter less than `balanceOf(_owner)`/// @return The token identifier for the `_index`th NFT assigned to `_owner`,/// (sort order not specified)functiontokenOfOwnerByIndex(address _owner,uint256 _index)external viewreturns(uint256);} 下面这个链接,你可以看到一个实现了ERC721的例子...
[5]参见《Anti-money laundering and counter- terrorist financing measures People’s Republic of China Mutual Evaluation Report》(April 2019)第7页。 [6]参见香港特别行政区新闻公报《立法會:財經事務及庫務局局長動議二讀<2022年打擊洗錢及恐怖分子資金籌集(修訂...
[5]参见《Anti-money laundering and counter- terrorist financing measures People’s Republic of China Mutual Evaluation Report》(April 2019)第7页。 [6]参见香港特别行政区新闻公报《立法會:財經事務及庫務局局長動議二讀<2022年打擊洗錢及恐怖分子資金籌集(修訂)條例草案>發言全文(只有中文)》,https://www...
using Counters for Counters.Counter; Counters.Counter private _tokenIds; constructor() ERC721("MyNFT", "NFT") {} function mintNFT(address recipient, string memory tokenURI) public onlyOwner returns (uint256) { _tokenIds.increment(); uint256 newItemId = _tokenIds.current(); ...
import"@openzeppelin/contracts/access/Ownable.sol";contract MyNFT isERC721,Ownable{using CountersforCounters.Counter;Counters.Counterprivate_tokenIdCounter;constructor()ERC721("MyNFT","MNFT"){}functionmintNFT(address to)publiconlyOwner{uint256 tokenId=_tokenIdCounter.current();_tokenIdCounter.increment(...
NFT是什么？谈谈对NFT的理解？导语 今年被称为 NFT 的“元年”，Uniswap一双袜子卖16万美元，推特创始...
OTC - Over the Counter BTC - Bitcoin ETH - Ethereum ADA - Cardano DOGE - Dogecoin SHIB - Shiba Inu BNB - Binance Coin XRP - Ripple 实用英文短语 📝 💡 Ideas are cheap, execution is everything. 💡 Success is not final, failure is not fatal: it is the courage to continue that ...
Counters.Counter private _tokenIds; struct NFT{ uint256 tokenId; string name; uint256 reward; uint256 growthRate; uint256 lastHarvestTime; }mapping (uint256 => NFT)private_nfts;constructor()ERC721("NFT Farm Token", "NFTFT"){}functionmintNFT(stringmemoryname, uint256 reward, uint256 growth...