Roger Ver, an early Bitcoin investor and advocate who earned the nickname 'Bitcoin Jesus', is facing legal turmoil following his arrest in Spain.

The U.S. Department of Justice announced an unsealed indictment, charging Ver with mail fraud, tax evasion, and filing false tax returns. The arrest marks a significant development in the ongoing scrutiny of cryptocurrency taxation and regulation.

The U.S. authorities have taken steps to extradite Ver to face trial in America. They allege that Ver's actions resulted in a loss of at least $48 million to the Internal Revenue Service (IRS).

The case is currently under investigation by the IRS Criminal Investigation's cybercrimes unit, highlighting the growing intersection between digital currencies and law enforcement.

Ver, who renounced his U.S. citizenship and obtained citizenship in St. Kitts and Nevis, is accused of selling tens of thousands of bitcoins in November 2017 for approximately $240 million.

Despite renouncing his U.S. citizenship, Ver was still legally obligated to report and pay tax on worldwide assets, including dividends from his U.S.-based companies and capital gains from the sale of bitcoins.

"The indictment alleges that in November 2017 Ver allegedly sold tens of thousands of bitcoin on cryptocurrency exchanges for approximately $240 million in cash."

The case against Ver underscores the U.S. government's increasing focus on cryptocurrency taxation and the responsibilities of digital currency holders.

As the legal proceedings unfold, the cryptocurrency community will be watching closely, as the outcome may set precedents for future taxation and regulation of digital assets.