Will the price of Bitcoin be above $88,000 on September 11?

Kalshi — primary rule

If the simple average of the sixty seconds of CF Benchmarks' Bitcoin Real-Time Index (BRTI) before 5 PM EDT is above 87999.99 at 5 PM EDT on Sep 11, 2026, then the market resolves to Yes.

Polymarket — resolution criteria

This market will resolve to "Yes" if the Binance 1 minute candle for BTC/USDT 12:00 in the ET timezone (noon) on the date specified in the title has a final "Close" price higher than the price specified in the title. Otherwise, this market will resolve to "No". The resolution source for this market is Binance, specifically the BTC/USDT "Close" prices currently available at https://www.binance.com/en/trade/BTC_USDT with "1m" and "Candles" selected on the top bar. Please note that this market is about the price according to Binance BTC/USDT, not according to other exchanges or trading pairs. Price precision is determined by the number of decimal places in the source.