March 2022
Intermediate to advanced
293 pages
5h 31m
Chinese
Content preview from 精通区块链
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82 ｜ 第 3 章
项目的想法是创建一个更加可编程，更灵活的区块链。
NXT
不仅限于加密货
币和公开账本，更是提供一个平台，让人们可以在平台之上构建应用程序。
NXT
是最早引入彩色币（
colored coin
）的竞争链之一，通过标记或“着色”
加密货币以代表显示世界中的资产，如房产、股票债券或商品。
NXT
项目主
要由匿名的个人和团队开发。虽然没有流行起来，但
NXT
引入的概念对后来
出现的其他区块链很重要。
3.5.2
合约币
2014
年发行的合约币（
Counterparty
）是另外一个被标记为首个“比特币
2.0
”
项目。与万事达币（
Mastercoin
）（在第
4
章中介绍）一样，合约币是构建
在比特币网络之上，旨在提供更多的编程功能。值得注意的是，程序员可以
在该平台上创建自己的基于加密货币的区块链资产。它以智能合约为特色，
智能合约中的代码为区块链应用程序提供了业务逻辑，使得开发者可以更好
地控制写入区块链的时机和条件（下一章将深入讨论）。合约币也有自己的
加密货币，称为
XCP
。有趣的是，为了该项目的筹集资金，开发团队收集了
160
万美金的比特币并“烧毁”了它们。
3.6
注重隐私的加密货币
如前所述，在区块链上存储大量数据并不总尽如人意。在加密货币激增之
后，许多人开始担心区块链上保存了多少金融数据。因此注重隐私的加密货
币开始出现。在注重隐私领域，最早的两个项目是达世币（
Dash
）和门罗币
（
Monero
）。
3.6.1
达世币
达世币（
Dash
）于
2014
年面世，是比特币的软件分叉。它有着一段不光彩的
过去，最初的时候达世币原名暗黑币 ...
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