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    • 10. 发明公开
    • DEVICE, METHOD AND PROGRAM FOR SECURELY REDUCING AN AMOUNT OF RECORDS IN A DATABASE
    • 用于在数据库中安全地减少一些记录的装置,方法和程序
    • EP3321819A1
    • 2018-05-16
    • EP16198040.4
    • 2016-11-09
    • Ingenico Group
    • GERAUD, RémiNACCACHE, David
    • G06F17/30
    • Banks and blockchains need to keep track of an ever-increasing list of transactions between the accounts owned by their users. However, as time goes by, many of these transactions can be safely "forgotten", in the sense that purging a set of transactions that compensate each other does not impact the network's semantic meaning i.e. the vector B t of amounts representing the balances of users at a given point in time t .
      Nilcatenation refers to a collection of past transaction vectors having no effect on B t . Removing these transactions yields a smaller, but equivalent set of transactions.
      It is proposed a device and method for finding nilcatenations, and proposes nilcatenation detection techniques, which can be applied to blockchains, and even constitute a proof of useful work, as the periodic removal of nilcatenations keeps the ledger size as small as possible.
    • 银行和区块链需要跟踪其用户拥有的账户之间不断增加的交易清单。 然而,随着时间的推移,这些交易中的很多可以被安全地“遗忘”,因为清除一组相互补偿的交易不会影响网络的语义含义,即代表用户余额的向量Bt 给定的时间点t。 Nilcatenation是指对Bt没有影响的过去事务向量的集合。 删除这些交易会产生一个较小的但相同的交易。 它提出了一种用于查找自相矛盾的设备和方法,并提出了可应用于区块链的限定检测技术,甚至构成了有用工作的证明,因为定期清除无关联会使分类账规模尽可能小。