Coinbase’s Supreme Court Loss Is Its Own Fault

To hear the words “Coinbase” and “Supreme Court” in the same breath likely inspires thoughts of the justices jousting over cryptocurrency. But this week’s decision in Coinbase v. Suski is a reminder that even in our clever new era, old principles of contract law often hold sway.

The question before the court at first blush seems simple. Back in 2021, Coinbase ran a sweepstakes offering prizes paid in Dogecoin. The plaintiffs, who participated in the competition, subsequently filed suit in federal court in California, claiming that the sweepstakes’ rules violated that state’s laws. Coinbase replied that under the terms of the User Agreement, which the plaintiffs accepted, all such disputes must go to arbitration.

One would have expected that to be the end of the matter. Once upon a time, courts looked with hostility on mandatory arbitration clauses — many scholars and activists still do — but in recent decades the Supreme Court has been staunch in upholding the position that the Federal Arbitration Act means what it says: If there’s a valid arbitration clause, it’s binding.

In the Coinbase case, however, the justices unanimously refused to order that the dispute be arbitrated.

How is this possible?

Because, as Justice Ketanji Brown Jackson explains in a unanimous opinion, there was not just one contract between Coinbase and the sweepstakes entrants; there were two. And between the two lay a certain inconsistency. Call it bad lawyering, call it a silly oversight, call it a bit of minutiae that should never have reached the Supreme Court. But there were two contracts, and the justices had to figure out how they worked together.