IRS Can Access Coinbase User Trading Data, Court Rules

A Coinbase user had attempted to argue the IRS violated his constitutional rights when it sought his trading data

article-image

AevanStock/Shutterstock modified by Blockworks

share

A US Federal court has ruled the Internal Revenue Service (IRS) is within its right to access Coinbase user data, in a case which sought to block the tax agency on constitutional grounds.

Plaintiff James Harper filed suit in Aug. 2020 against the IRS, its then-commissioner Charles Rettig and 10 IRS agents. It alleged they had violated his rights to obtain trading records through what’s known as a “John Doe” summons.

John Doe summons — a common tactic used by multiple government agencies — essentially affords the legal right to request a third party hand over data belonging to an individual or group of individuals for tax evasion checks.

The US District Court of New Hampshire, citing a May Supreme Court ruling, said the agency’s powers afforded to it by Congress meant Harper was not entitled to protections or relief beyond existing “checks on the IRS’ powers,” according to court documents hosted by Law360.

Harper, who maintained his innocence, had previously attempted to argue that such a request for his internal Coinbase trading records violated his Fourth and Fifth amendment rights.

An early-era crypto trader and former in-house legal consultant for the Bitcoin Foundation, Harper filed an amicus brief in 2016, fighting against the agency’s initial request for Coinbase to hand over all user trading records.

Despite ignoring requests from the agency, Coinbase was reportedly forced to hand over some of its largest user’s information, including Harper’s, following a separate summons against the Delaware-registered exchange a year later.

Harper later appealed and was granted the right to sue the IRS in the First Circuit last year. The IRS alleged Harper had failed to adequately declare his crypto trades in 2013 and 2014, prompting action from the agency against him and others. 

Since 2016, the agency has been using John Doe summons for digital asset enforcement efforts. 

In Aug. 2022, a California federal court granted an order allowing the IRS to issue a John Doe summons to SFOX, a Los Angeles-based crypto prime broker. 

The order sought data on US taxpayers who, between 2016 and 2021, conducted crypto transactions valued at least $20,000 with or via the SFOX platform.


Get the news in your inbox. Explore Blockworks newsletters:

Tags

Decoding crypto and the markets. Daily, with Byron Gilliam.

Upcoming Events

Hilton Park Lane

Tues - Wed, November 10 - 11, 2026

DAS London is a two-day summit at the Hilton Park Lane in London featuring conversations between the builders, allocators, and policy makers who are shaping the trajectory of the digital asset ecosystem in the UK, Europe, and North America.

Marina Bay Sands Singapore

Wednesday, October 07, 2026

DAS Asia is a a single-day summit at Marina Bay Sands Singapore featuring conversations between the builders, investors, and global leaders are shaping the trajectory of the digital asset ecosystem in Asia & North America.

recent research

Black Generic.png

Research

Compute demand is two-sided, the precondition for any hedging market. Producers (neoclouds and independent data centers) fear their inventory clears below cost. Consumers (inference platforms and the agentic application layer) fear compute will get more expensive. The common read holds that nonfungibility keeps both off any general exchange, since a buyer wants a named SKU in a named region rather than a basket, so the trade stays bilateral and the only exchange users are dealers hedging their book. That describes launch conditions, but understates how commodity markets form. Canonical benchmarks get made through trading, and reservations standardize as the curve deepens. The dealer-intermediated structure is not the end state, it is the seed of one.

Newsletter

The Breakdown

Decoding crypto and the markets. Daily, with Byron Gilliam.

Blockworks Research

Unlock crypto's most powerful research platform.

Our research packs a punch and gives you actionable takeaways for each topic.

SubscribeGet in touch

Blockworks Inc.

133 W 19th St., New York, NY 10011

Blockworks Network

NewsPodcastsNewslettersEventsRoundtablesAnalytics