区块链预言机（4）内在机制

1. 内在机制

1.1 step说明

• step1：A requester creating a smart contract specifying the data required to trigger the execution of the contract and deploy on the blockchain. The requester can be either a user or a component of a software system.

  用户或软件创建和发布一个智能合约

• step2：Centralized oracles can automatically identify requirements specified by a smart contract

  中心化的预言机收到了请求

• step3, step4：预言机与外部数据源交互，得到数据。
• step5：预言机将数据上链

• step6：the requester will be able to see this data in their execution of a smart contract

  智能合约执行完，用户能看到数据

1.2 两个特点：

• Oracles introduce a trusted third-party into the decentralised blockchain system.

  预言机是可信的第三方。

• Blockchain tramsactioms are immutable, but the external state used for oracle data may change.

  交易不变，但是预言机的数据状态可变。

2. 各区块链预言机总结

【参考】

[1] “Reliability analysis for blockchain oracles” Reliability analysis for blockchain oracles Volume 83, May 2020

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文章来源：CSDN博主「thefist11」
文章原标题：《区块链预言机（4）内在机制》
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