Coinbase sent a push notification declaring Norway had beaten Brazil in a World Cup match, complete with a 3-2 score and invented commentary about specific goal-scorers, hours before the game was played. The notification was wrong about the score (Norway won 2-1), but right about the winner and one of the scorers. It still reached hundreds of thousands of users as fact.
The AI system pulls sports data from Kalshi, a federally regulated prediction market platform Coinbase partnered with and rolled out nationwide in January. Prediction markets aggregate betting on event outcomes, and Coinbase's alerts frame market movements as news. The distinction matters: prediction markets function like binary options contracts and are trivially easy to manipulate with modest capital. They reward market-makers and reflect trader conviction, not ground truth.
Customers quickly flagged the absurdity on social media. One post noted that Coinbase had "opened a miniature black hole, stepped into the future, and returned with news" of a match that hadn't started. Another screenshot drew over 150,000 views, with users joking about insider information or asking whether Coinbase had somehow obtained results five hours in advance.
This isn't Coinbase's first stumble with sports alerts. During March Madness, the exchange bombarded customers with prediction prompts that CEO Brian Armstrong later blamed on a targeting bug, apologizing for the volume. The core incentive hasn't changed: prediction markets are one of Coinbase's fastest-growing revenue lines, hitting roughly $100 million in annualized run rate within two months of launch, according to Bernstein analysts. Kalshi itself paid around $20 million to sponsor World Cup stadiums. Making sports feel urgent and immediately tradeable drives engagement and transaction volume.
The company promised then to improve the notification filtering. It has not. The gap between a promise and execution reveals the trade-off Coinbase is making: tighter AI guardrails might hurt engagement and profits from a breakout product line. For now, customers will keep seeing prediction market swings repackaged as breaking news, occasionally complete with fictional details.