ChainCatcher message, according to the latest report from Chainalysis, Texas resident Frank Richard Ahlgren III was sentenced to 2 years in prison for tax crimes related to the sale of $4 million worth of Bitcoin and ordered to pay $1,095,031 in restitution to the United States. This is the first tax fraud case purely related to cryptocurrency.The report shows that Ahlgren used multiple wallets to transfer Bitcoin, engaged in face-to-face peer-to-peer transactions, and employed complex methods such as CoinJoin and Wasabi Wallet mixers to conceal the flow of funds. With the assistance of blockchain analysis company Chainalysis, investigators successfully tracked the transaction process, ultimately leading the IRS to bring him to justice.