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金色观察 | 如何使用Aztec实现DeFi隐私
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文/William M. Peaster，Bankless作者
Aztec Network是一个专注于隐私保护的zkRollup，能让你在一个私有的L2中访问L1 DeFi应用程序。本文将告诉你如何使用Aztec Network，以便让你实现DeFi隐私。 Aztec Network新手指南“Aztec有一个像现金一样运作的链外UTXO架构。从功能上防护代币意味着将其存入Aztec以太坊智能合约，然后与Aztec链外UTXO的状态系统通信，生成类似现金的加密票据。 …… 当资产存入Aztec、从Aztec取出、在Aztec内部发送或通过Aztec兑换其他资产时，状态树会更新加密钞票。因为除了所有者之外，没有人能看到票据内部，所以用户身份和帐户余额被完全保留。”——摘自Aztec FAQ Aztec Network是什么？Aztec Network是一种以隐私保护为宗旨的以太坊扩展解决方案。 Aztec的核心是其“PLONK”零知识证明系统，通过该系统，zkRollup用户可以以匿名方式访问DeFi，而且交易成本要比以太坊L1交易节省100倍。 zk.money是什么？zk.money是建立在Aztec L2上的隐私代币交易协议。换言之，它是一个覆盖系统，可以轻松与底层zkRollup进行交互。 迄今为止，zk.money已经帮助实现超过25万笔隐私加密货币交易。目前Aztec的总锁定价值（TVL）约为280万美元，主要是ETH和DAI存款，正是zk.money让这些存款成为可能。 
Aztec Connect是什么？Aztec Connect作为zk.money的扩展，是以太坊DeFi的隐私桥。 使这个隐私桥能够正常运行的是Aztec Connect的特殊桥合约，它让用户能够从私有L2内部与L1 DeFi项目进行交互。 这种设计是强大的，因为DeFi项目不需要像在其他L2那样——移植代码进行单独部署。通过这种方式，Aztec Connect避免了流动性碎片化或信任碎片化问题，因为它可以让你以防护方式访问L1 DeFi卓越的流动性和经过验证的智能合约。 
Aztec的基本机制当你通过zk.money进行存款来防护加密货币时，你在Aztec上收到的是加密票据，如zkETH或zkDAI。 如果你把这些票据发给zk.money上的其他人，他们会在Aztec上收到zkETH或zkDAI，如果你向非zk.money用户发送加密票据，他们只会在以太坊L1上收到ETH或DAI。在后一种情况下，你的发送也是私密的，因为接收方只能看到资金来自Aztec智能合约，看不到你的具体地址。 目前，用户的每笔交易最多只能防护5 ETH或10k DAI。只要你准备好了撤资，Aztec将让你在4小时内完成提款，但如果你将交易费用提高到足够高的水平，你可以将提款过程缩短到10分钟左右。 建议不要把钱取到你曾经存过款的地址。还要注意，最好坚持使用不惹眼的整数形式的提款金额，如0.1 ETH等。举个例子，如果你用同一个地址连续进行一系列0.069420 ETH的存款和取款，那么对你的地址进行去匿名化会相当容易。 如何创建zk.money账户？
1）访问https://zk.money/网址，并点击Shield Now按钮。 2）进入下个页面，点击MetaMask或WalletConnect，用你的钱包签署随后的交易，以生成zk.money账户。 3）选择你的帐户名称，然后按Register，随后你将再签署两个交易，以生成你的帐户隐私和支付密钥。 
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