区块链是一种按照时间顺序将数据区块以顺序相连的方式组合成的一种链式数据结构，并以密码学方式保证的不可篡改和不可伪造的分布式账本。主要解决交易的信任和安全问题，最初是作为 （ ） 的底层技术出现的。
- A.电子商务
- B.证券交易
- C.比特币
- D.物联网
正确答案及解析
正确答案
解析
区块链（Block chain）是比特币的一个重要概念，在《2014-2016全球比特币发展研究报告》中提到区块链是比特币的底层技术和基础架构。
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