I recorded Polymarket's 5-minute crypto markets for two months. Here's the dataset.

A free, open dataset: nearly 89,000 of Polymarket's 5-minute crypto up/down markets (BTC, ETH, SOL, XRP, DOGE, HYPE, BNB), captured second by second - about 26.8 million top-of-book order-book observations from March to May 2026. I collected it to backtest a bot. You can have it.