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A Fair Blockchain Based on Proof of Credit

机译:基于信用证明的公平区块链

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Proof of work and proof of stake (PoS) are commonly used in the current permissionless blockchains. These consensus protocols can be abstracted into a random process of selecting a node for accounting in a blockchain ledger. However, they are generally faced with resource consumption and vulnerability issues. We present proof of credit (PoC), a fair blockchain protocol based on the PoC blockchain protocol. It is a special PoS protocol where the credit is a special kind of stake quantifying whether the node's activity is beneficial to the system. Any nodes cannot change their credits arbitrarily. We demonstrate that our PoC protocol satisfies the security properties, including common prefix, chain quality, and chain growth, under the assumption that the total credit the honest held is majority. In addition, we propose a self-audit mechanism and a hybrid incentive mechanism to enhance the security and stability. Finally, we explain the method by which the PoC protocol resists the double-spending attacks and the selfish mining attacks.
机译:当前的无许可区块链中通常使用工作量证明和权益证明(PoS)。这些共识协议可以抽象为一个随机过程,该过程选择一个节点以在区块链分类账中进行计费。但是,他们通常面临资源消耗和漏洞问题。我们提出信用证明(PoC),这是一种基于PoC区块链协议的公平区块链协议。它是一种特殊的PoS协议,其中信用是一种特殊的权益,用于量化节点的活动是否对系统有利。任何节点都不能任意更改其信用。我们证明了我们的PoC协议满足了安全性属性,包括通用前缀,链质量和链增长,前提是诚实持有的总信用额为多数。此外,我们提出了一种自我审计机制和一种混合激励机制,以增强安全性和稳定性。最后,我们解释了PoC协议抵制双花攻击和自私采矿攻击的方法。

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