原文發佈在個人網站小試身手1.Retrieve the Current Block Numbercurl [https://mainnet.infura.io/v3/](https://mainnet.infura.io/v3/YOUR-PROJECT-ID)YOUR_PROJECT_ID \ -X POST \ -H "Content-Type: application/json" \ -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params": [],"id":1}' 回傳了以十六進制表示的block number：{"jsonrpc":"2.0","id":1,"result":"0xdf9bca"} 2.Check the Ether Balance For a Given Contractcurl [https://rinkeby.infura.io/v3/](https://mainnet.infura.io/v3/YOUR-PROJECT-ID)YOUR_PROJECT_ID \ -X POST \ -H "Co...