March 2022
Intermediate to advanced
293 pages
5h 31m
Chinese
Content preview from 精通区块链
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加密货币的基础知识 ｜ 45
在生成新的区块哈希时包含前一个区块哈希，这样确保每一个区块都是环环
相扣，组成了一条“链”，如图
2-12
所示，因此命名为区块链（
blockchain
）。
区块 区块 区块
区块头 区块头 区块头
上一个区块
默克尔树根
上一个区块
默克尔树根
上一个区块
默克尔树根
图
2
-
12
：区块哈希将连续的区块连接在一起，形成一条大链子
2.5
托管，谁拥有钥匙
在金融服务中，托管是指持有、转移和保护资产的能力。了解哪些支持托管
的概念是一个好主意，因为有各式各样存储加密资产的方式。
2.5.1
钱包类型：托管与非托管的比较
与人们将现金和信用卡等价值存储在折叠的皮革钱包中类似，加密货币也被
存储在同样被称为“钱包”的东西中。然而存储加密货币的钱包实际上只是
一个用于存储加密密钥并保障其安全的接口，加密货币并不存在于任何设备
上，钱包只专注于存储于加密货币关联的密钥。很多人说加密货币和区块链
是“被数学证明的安全”，就是这个意思。
一般来说，加密货币钱包有两种类型：托管和非托管。托管钱包由一个受信
的实体控制，用户通常需要通过网页界面访问。这些网站为用户存储私钥，
这样一来用户就不用担心丢失私钥。
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