Community post
以太坊开发过程中的链下计算方案
在以太坊环境中，计算可以由外部的预言机进行，也就是将外部环境数据提交到区块链的第三方。预言机分为两类：
- Data-carrier oracles
数据载体预言机——从可信的数据源中提交查询结果到智能合约上
- Computatuion oracles
计算预言机——不仅提交查询结果，同样做相关计算。
数据载体预言机
计算预言机
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