Since Polymarket launched 5-minute Bitcoin binary contracts in February 2026, Bitcoin’s price has been volatile in the final seconds before each contract settles. The contracts pay $1 if BTC at the end of the 5-minute window is higher than at the start, and $0 otherwise. Because settlement uses the live market price, it can be moved with trades. How It Works 1. Buy the “Up” contract on Polymarket. 2. In the final seconds, buy Bitcoin to push the price just above the window’s opening level. 3. The contract settles in your favor. This is especially profitable when the contract is close to even odds (near 50/50), where a tiny price move decides the outcome.(Ali Charts)