（ ）is the underlying architecture of Bitcoin，and it is used for other cryptocurrencies，because it provides a verifiable list of ownership，it is also used for contracts， fundraising and the recording of legal documents. The incentive is undeniable proof of digital authenticity.
翻译：（区块链）是比特币的基础架构，用于其他加密货币，因为它提供了可验证的所有权列表，还用于合同、筹资和法律文件记录。其动机是不可否认的数字真实性的证明。
A. 物联网
B. 大数据
C. 区块链
D. 人工智能