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- An amicus brief by Coinbase challenges the IRS’s broad data collection, claiming it violates Fourth Amendment rights.
- The company argues that linking blockchain wallet addresses to identities allows intrusive surveillance of users’ transactions.
- Coinbase urges the Supreme Court to impose limits on IRS data access, citing privacy risks in the digital age.
Coinbase submitted an amicus brief to the U.S. Supreme Court showing their opposition to the IRS collecting extensive cryptocurrency user information. According to Coinbase this data collection violates the rights protected by the Fourth Amendment. Through its filing the Court supports James Harper in his opposition to the IRS John Doe summons, which allowed the IRS to obtain his financial information. The 2016 issued summons demanded financial information from approximately 500,000 Coinbase users.
After receiving a court order Coinbase decided to give up the requested information despite initial opposition. The IRS requested comprehensive information about 14,000 users yet lacked specific reasons to suspect any individual. The company contends that this method intrudes excessively upon user privacy boundaries. The company argues that the IRS has exceeded its authority by granting itself open-ended power to monitor all cryptocurrency transaction activities of users.
Privacy Concerns and Surveillance
The Chief Legal Officer of Coinbase Paul Grewal released a statement to explain the situation. The current use of the third-party doctrine fails because it destroys privacy when individuals make data accessible to outside entities. The IRS comes under fire from Grewal due to its justified use of the third-party doctrine for extensive surveillance authority. The company stands in support of tax compliance but opposes any data requests which exceed reasonable specificity requirements.
The summons provided authority for the IRS to establish connections between blockchain wallet addresses and individual person identities. Through its challenge Coinbase maintains the position that blockchain transaction privacy suffers from such measures. After matching wallet addresses to individual identities the IRS obtains complete access to monitor all crypto transactions performed by that person. Through its monitoring system Coinbase obtains continuous user activity data that extends past its own platform.
Coinbase’s Commitment to Privacy
As part of maintaining strict user privacy standards Coinbase demonstrates its deliberate commitment to protecting all user personal information. The company handled 10,700 law enforcement requests in 2024, as most of the cases originated from the United States while Coinbase tries to reject requests that lack definition or span beyond their needs. The business supports official government requests yet stops short of accommodating bulk data retrieving when there is no legitimate reason.
Additionally the Carpenter v. United States case is mentioned in the brief. The court restricted law enforcement officials from obtaining data through methods not authorized by court orders. The Supreme Court should establish the same standards for digital data collection that Coinbase advocates according to their petition.
The company seeks from the court precise boundaries that would constrain how the IRS can access user information. According to Coinbase the absence of control in this matter presents risks that threaten to establish dangerous boundaries for privacy protection in digital spaces.
