Coinbase is calling on the U.S. Supreme Court to review a case that could reshape digital privacy laws. The company has filed an amicus brief in the case of Harper v. O'Donnell, advocating for a reconsideration of the third-party doctrine, which states individuals lose their privacy rights when sharing information with third parties like crypto exchanges. The IRS had issued a John Doe summons to Coinbase in 2016, demanding the data of over 14,000 users to identify potential tax evaders. Coinbase argues this practice compromises user privacy and could allow the IRS to monitor transactions in real time, likening it to wearing a 'financial ankle monitor.' Citing the 2018 Carpenter v. United States decision, the brief suggests the need for updated privacy protections that acknowledge the unique nature of blockchain technology. A decision on whether the Court will hear the case is expected later this year, which could lead to significant changes in how digital financial data is treated under the Fourth Amendment.

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