March 2022
Intermediate to advanced
293 pages
5h 31m
Chinese
Content preview from 精通区块链
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34 ｜ 第 2 章
表
2
-
1
：比特币交易字段含义（续）
字节 描述
输入列表 输入数据的列表
出数 输入的数量输出的数量见证 如果使用隔离见证
，
那么这个字段显示的是见证列
表
时间锁 4 个字节
。
如果这个字段不是空的
，
该字段确定了由网络决定的该交易可被添加
到区块链的最早时间
。
这个字段可以表示为区块高度或 UNIX 时间戳
2.3
交易
在加密货币中，交易代表了价值从一个地址到另一个地址的移动。交易被发
布到区块链上被称为交易已确认。转移资金需要用私钥签署交易。然后，接
收方使用相应的公钥验证签名并验证交易。在大多数加密货币中，用户还必
须向网络支付少量费用才能使交易顺利进行。这笔费用通常归发掘该交易所
在的区块的矿工所有，是为了激励发布区块的矿工继续保障网络的安全。有
一些在线工具（比如像特币费用估算器和计算器）可以帮助你预测你应该在
交易中包含多少的费用，以便在所需的时间范围内将其记录在区块链上（见
图
2-3
）。
图
2
-
3
：估算将交易纳入区块链的费用
比特币交易费用会因网络容量、需要确认的速度和其他因素而变化。因为一
个区块上可以容纳的交易的数量是有限制的
(
目前的限制是
1MB
的数据，或
者每个区块大约有
3500
个交易
),
更紧急的情况下可能需要更高的费用。本质
上这是矿工之间的相互竞争
,
更高的费用意味着更快确认。图
2-4
说明了比特
币交易过程中发生的一系列事件。
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.