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区块链反洗钱态势匿名性与不可逆是加密货币交易的天然属性，正是这样的原因，在加密货币犯罪频发的情况下，区块链反洗钱处于一个至关重要的位置，也是阻止黑客成功变现的最后防线。面对黑客无孔不入的威胁，不同的群体也不约而同地“组建”起反洗钱同盟，其中包括交易平台/资金管理平台/项目方、监管方和区块链安全公司。 2022 上半年，这些群体的反洗钱动态如下： Tether：2022 上半年共计屏蔽了 132 个 ETH 地址 ，这些地址上拥有的 USDT-ERC20 资产被冻结不可转移。 Circle：2022 上半年共计屏蔽了 18 个 ETH 地址 ，这些地址上拥有的 USDC-ERC20 资金被冻结不可转移。 美国财政部：4 月 14 日制裁 Ronin Network 黑客（LAZARUS GROUP）相关的地址，5 月 6 日制裁加密货币混币器 Blender，值得注意的是，美国财政部在此之前从未制裁过加密货币混币器。 Chainalysis：3 月 10 日，创建 SanctionsList 链上数据库合约 ，共计制裁 31 个地址 。 SlowMist：4 月 27 日，MistTrack 反洗钱追踪系统正式上线，专注于打击加密货币洗钱活动。 众所周知，造成区块链安全事件的黑客、黑色产业链、欺诈者和 Rug Pull 项目方一直是洗钱的主力，其中最臭名昭著的莫过于朝鲜 LAZARUS GROUP 黑客组织，给区块链生态安全带来巨大的威胁。 根据开源情报和链上数据分析推测 LAZARUS GROUP 上半年的动态如下： 1 月 17 日，Crypto.com 的少数用户账户遭到未经授权提款。 2 月 8 日，The IRA Financial 的 Gemini 托管账户被恶意提款。 3 月 23 日，Ronin Network 跨链桥被盗成为加密货币领域损失最大的黑客攻击事件之一。
在这些与 LAZARUS GROUP 相关的安全事件中，我们可以通过他们成体系的洗钱手法发现他们的痕迹： 初期：将 ETH 链上的获利资金全部兑换为 ETH，并将所有的 ETH 分批转入Tornado.Cash（大量）或者交易平台（少量）。 中期：从 Tornado.Cash 分批提款后兑换为 renBTC 代币跨链到 BTC 链。 后期：在 BTC 链上，从 renBTC 提款后汇总资金，并进一步转移到 Coinjoin 和混币器。
在黑客、黑色产业链、欺诈者和 Rug Pull 项目方洗钱过程中，自然少不了一些洗钱工具的帮忙，常见的洗钱工具有 ETH/BSC 链上的 Tornado.Cash，BTC 链上的 Coinjoin 工具（ChipMixer 等）、混币器（Blender、CryptoMixer 等）、隐私钱包（Wasabi、Samourai 等）、换币平台（ChangeNOW、SimpleSwap、FixedFloat 等）和一些交易平台。 一些常见洗钱工具上半年的存提款数据如下： 
（Tornado.Cash 上半年存款/提款图） Tornado.Cash：2022 上半年用户共计存款 955,277 ETH（约 24.42 亿美元）到 Tornado.Cash，共计从 Tornado.Cash 提款 892,573 |
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