数据层最底层的技术,是一切的基础,主要实现了两个功能,一个是相关数据的存储,另一个是账户和交易的实现与安全。数据存储主要基于 Merkle 树,通过区块的方式和链式结构实现,大多以 KV 数据库的方式实现持久化,比如以太坊采用 LevelDB。账号和交易的实现基于数字签名、哈希函数和非对称加密技术等多种密码学算法和技术,保证了交易在去中心化的情况下能够安全地进行
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