March 2022
Intermediate to advanced
293 pages
5h 31m
Chinese
Content preview from 精通区块链
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40 ｜ 第 2 章
交易，交易的手续费也就越高。比特币费用（
Bitconin Fees
）网站显示了
目前的平均交易手续费是多少。
币基交易只有一个输入空白的输入，这个输入被称为币基。币基交易还有其
他一些特殊的属性，例如，前一个交易字段是
32
个字节的
0
，允许矿工在原
脚本签名位置填充任意数据，例如，
Nonce
头溢出（参见本章后面的“挖矿
过程”）。
图
2-10
的例子展示比特币区块链浏览器中显示的币基交易。
图
2
-
10
：币基交易示例
2.3.4
比特币交易安全
比特币交易是推送（
push
）交易，这意味着发送者（将资金从他们控制的账
户发送出去的人）是交易的发起方。相对的，拉取（
pull
）交易是由接收者发
起的。拉取交易的一个例子是信用卡交易，在这种情况下，作为资金接收方
的商户负责发起交易。
拉取交易的安全性明显更低一些，因为交易过程要求发送者分享自己的账户
信息给接收者。为了弥补这一弱点，采用拉取交易的支付网络（如
Visa
）提
供了退款保障机制，允许对交易提出异议并要求退款。
作为推送交易的比特币交易，安全性明显更高。无论何时发起交易，发送者
都不必透露任何账户信息给接收者。发生欺诈交易的唯一途径是未经授权的
人获得他人的私钥。
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.