Polymarket US has rolled out five-minute up-or-down markets for four of crypto’s biggest names: Bitcoin, Ether, Solana and XRP.

The launch, announced on October 27, 2026, gives users of the CFTC-regulated app a much faster way to take a view on price direction.

The setup is simple. Each market asks one yes-or-no question: will this token’s price end the five-minute window higher or lower than where it started?

Users buy shares on the outcome they expect. If they call it right, the shares pay out. If they call it wrong, they don’t. It is a binary bet with a very short fuse.

The markets cover four assets: BTC, ETH, SOL and XRP.

Resolution is automated and relies on data feeds from Chainlink, the oracle network that pipes outside price data…