* @param _from address The address which you want to send tokens from * @param _to address The address which you want to transfer to * @param _value uint the amount of tokens to be transferred */ function transferFrom(address _from, address _to, uint _value) public onlyPayloadSize(3 ...
As its name suggests, thetransferfunction is used to movenumTokensamount of tokens from the owner’s balance to that of another user, orreceiver. The transferring owner ismsg.senderi.e. the one executing the function, which implies that only the owner of the tokens can transfer them to oth...
The ERC20 token standard is a key innovation on Ethereum, enabling the creation and use of tokens. Learn what it is and how it works in our detailed guide.
000 different cryptocurrencies and tokens. This figure includes stablecoins, wrapped tokens, tokens that grant voting rights in governance protocols, tokens that represent a share of a liquidity pool, tokens that incentivize users to hold their assets by imposing...
* @dev constructor, initializes the token name and symbol, and pre-mints a certain amount of tokens for the deployer * @param name token * @param symbol of the token */ constructor(string memory name, string memory symbol) ERC20(name, symbol) Ownable(msg.sender) { ...
* * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless this function is * overloaded; * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the...
ERC20 Tokens Many people don't know the true power behind the Ethereum blockchain, you might have other crypto currencies in your wallet that you didn't even know about. TokenBalance API Endpoints Mainnet - https://api.tokenbalance.com/token/$CONTRACT/$ETH_ADDRESS Ropsten Testnet - https:...
ERC20 is not the only Ethereum token standard, and it has opened the path for the creation of other token standards: ERC-721 ERC-721 introduced the concept of non-fungible tokens (NFTs) with unique identifiers for each token. NFTs support complex ownership structures for use cases like virtu...
官方源码:Tokens/EIP20.sol at master · ConsenSys/Tokens · GitHub我的源码:GitHub - xiongwei-git/Tokens: One EIP-20 Token Sample 这个示例源码比较简单,包含三个sol文件,分别是接口定义EIP20Interface,Token实现EIP20和Token管理类EIP20Factory。
ERC-20 allows developers to create smart-contract-enabled tokens that can be used with other products and services. These tokens are a representation of an asset, right, ownership, access, cryptocurrency, or anything else that is not unique in and of itself but can be transferred. ...