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cryptoZombies 教學 Lesson5-Day12 – Howard Wang – Medium 在這堂,我們會解說各種不一定的Token,像常見的ERC20,ERC721以及ERC721x,都懂了之後就能交易我們的殭屍了喔. Chapter 1: Tokens on Ethereum 相信大家都有在以太上聽過Token, 最常見的ERC20 Token等等. Token是什麼呢: Token就是一個遵守一些共同規則的智能合約,這句話或許很繞口,不過看看例子,最常見的通常會遵守transferFrom(address _from, address _to, uint256 _tokenId)and balanceOf(address _owner) ,以及在合約內部都會有mapping(address => uint256) balances , 第一個function 帶有Token從哪來,要給誰,是哪種Token. 第二個function 這個合約擁有者有多少餘額. 還會有個映射來記錄餘額. 所以Token簡單來說就是一個智能合約可以追蹤誰擁有了多少Token以及可以交易這些Token. Why […]

Coinbase Suspends Ethereum Classic Following 51 Percent Attack Exchanges Coinbase has ceased interactions with the Ethereum Classic (ETC) blockchain after the exchange detected a 51 percent attack on the network. Following the discovery of a […]