Polymarket has launched a new “Bitcoin Up or Down” product for U.S. users, allowing participants to speculate on the price movement of Bitcoin in 15-minute intervals. The platform, which began offering these binary contracts on September 22, 2026, utilizes real-time price data from Chainlink and CF Benchmarks to settle trades continuously, 24 hours a day.
The Mechanics of High-Frequency Betting
The new trading format functions by setting a reference price for Bitcoin at the start of every 15-minute window. Participants place a binary bet on whether the price will be equal to or higher than the reference level (“up”) or lower than the reference level (“down”) when the timer expires.
According to reports from DiarioBitcoin, the system is fully automated. The platform uses a BTC/USD price feed from Chainlink to determine the final result, and users can exit their positions before the 15-minute period concludes. The contracts are settled at $1 for winning positions. This high-frequency approach contrasts with Polymarket’s traditional model, which typically focuses on long-term political, economic, or sporting event outcomes that can take days or months to resolve.
Index Data and Settlement Precision
To ensure accuracy, the platform relies on external index data. While CriptoNoticias notes the use of the CF Benchmarks Bitcoin Real Time Index (BRTI), other industry reporting from CryptoBriefing—as cited by DiarioBitcoin and Criptoperiodico—identifies Chainlink’s price feeds as the mechanism for liquidating the contracts.
The settlement process involves calculating the initial and final values based on 60 data points gathered during the final minute of each 15-minute interval. These points are averaged and rounded to two decimal places, meaning even minor market fluctuations can determine the outcome of a contract.
Regulatory Scrutiny in the U.S. Market
The introduction of these instruments in the United States brings Polymarket closer to the high-speed financial derivatives market, a shift that industry observers suggest may invite increased regulatory scrutiny. While the platform has successfully expanded its footprint in the U.S. market, the transition to ultra-short-term, 24/7 speculative products on a digital asset like Bitcoin raises questions regarding how federal authorities may classify and oversee such offerings.
Scaling Global Trading Volume
Despite these questions, the product has already seen significant activity globally. Data from Dune Analytics, reported by Fortune earlier in 2026, showed that similar five-minute Bitcoin contracts on the platform’s international site surpassed $60 million in daily volume. The current U.S. rollout focuses specifically on 15-minute intervals, providing a faster pace of interaction than standard financial markets while aligning with the non-stop nature of cryptocurrency trading.
Worth a look