论文标题
使用证明的挑战（POUW）
Challenges of Proof-of-Useful-Work (PoUW)
论文作者
论文摘要
工作证明（POW）是一种流行的区块链共识算法，用于比特币这样的加密货币，在该币上重复哈希操作，直到产生的哈希具有某些属性为止。这种方法使用大量的计算能力和能量来确保区块链的唯一目的。为了不浪费能量，除了在节点之间达成共识并因此确保区块链之间没有其他目的的哈希操作，使用的使用证明（POUW）是一种替代方法，旨在替换过度使用Hash功能的任务，从而带来其他现实世界中的好处，例如。支持依赖计算重大模拟的科学实验。该出版物由两个部分组成：在第一部分中，描述了基于哈希的POW的重要特性。在第二部分中，分析了理论上的POUW概念，例如Coinami，Coinai和第一个成功的POUW加密货币Primecoin，分析了如何在执行有用工作时如何保留POW属性。
Proof-of-Work (PoW) is a popular blockchain consensus algorithm that is used in cryptocurrencies like Bitcoin in which hashing operations are repeated until the resulting hash has certain properties. This approach uses lots of computational power and energy for the sole purpose of securing the blockchain. In order to not waste energy on hashing operations that do not have any other purpose than enabling consensus between nodes and therefore securing the blockchain, Proof-of-Useful-Work (PoUW) is an alternative approach which aims to replace excessive usage of hash functions with tasks that bring additional real-world benefit, e.g. supporting scientific experiments that rely on computationally heavy simulations. This publication consists of two parts: In the first part, important properties of conventional hash-based PoW are described. In the second part, theoretical PoUW concepts such as Coinami, CoinAI and the first successful PoUW cryptocurrency Primecoin are analyzed with respects to how PoW properties can be retained while doing useful work.
