Glossary KV transaction(交易) asset(资产) tamper-resistant(防篡改，不可篡改) smart contract(智能合约) decentralized(去中心化) consensus mechanism(一致性机制) peer(node,节点) public key(公钥) private key(私钥) sign(签名) digital certificate(数字证书) CA(认证授权机构) public key infrastructure X.509 POW POS PBFT hash hashchain blockchain