Coinbase Adds 15-Minute and Hourly Crypto Price Contracts

The notable shift here is structural rather than directional: Coinbase is distributing ultra-short-dated contracts listed by Kalshi, effectively turning a regulated prediction-market venue into a product supplier for a major exchange. That pairing matters for how this category scales, since it leans on Kalshi's existing listing and market infrastructure rather than Coinbase building the contracts itself. The open question is whether this overlap concentrates short-dated crypto volume in a handful of venues, and whether other exchanges follow with similar distribution arrangements.