Cryptocurrency exchange Coinbase is facing significant user criticism for aggressively promoting its prediction markets service through push notifications, particularly during the March Madness college basketball tournament. Users have taken to social media to express frustration, describing the notifications as "annoying" and "absurd," and questioning the platform's shift towards encouraging speculative gambling.
The service, launched in January 2026 in partnership with prediction market platform Kalshi, allows U.S.-based users to bet on the outcomes of sports, political, and cultural events using cash or USDC. However, the recent marketing push has led to a flood of complaints. X user AvgJoesCrypto highlighted the intensity, stating, "I have received three separate notifications about College Basketball from Coinbase in the past *hour* alone."
Industry figures have joined the criticism, warning of long-term reputational damage to the crypto sector. John Palmer, co-founder of PartyDAO, questioned Coinbase's internal philosophy, asking, "What does that say about the internal philosophy around money management? Can I trust the yield sources on USDC interest, can I trust internal risk management, etc." Alexander Leishman, founder of Bitcoin exchange River, issued a sharper warning, stating, "It's long term very bad for our industry to be pushing sports betting. The blowback will impact all of us."
Coinbase CEO Brian Armstrong acknowledged the feedback on social media, calling it "a fair point" and indicating the company would consider changes, including providing more customization options for push notifications.
The controversy unfolds against a complex regulatory backdrop. Prediction markets are classified as "event contracts" under federal law and fall under the jurisdiction of the Commodity Futures Trading Commission (CFTC). However, state regulators in Nevada, Illinois, and Connecticut argue these contracts constitute illegal gambling. In December, ahead of the service launch, Coinbase preemptively filed lawsuits against regulators in Connecticut, Illinois, and Michigan, arguing for CFTC's exclusive jurisdiction.
Furthermore, the situation has drawn attention from U.S. lawmakers. Allegations of a government insider using rival platform Polymarket to profit from a bet on Venezuelan politics have led to legislative proposals seeking to ban U.S. Presidents and members of Congress from using such platforms.
