Show HN: A free dataset, Polymarket's 5-minute crypto markets, second-by-second

Category: other

Tags: polymarket, dataset, crypto-markets, order-book, prediction-markets, trading-bots, backtesting

Score: 5.7/10 (Innovation: 5, Technical: 6, Documentation: 7, Utility: 6)

This project provides a free, per-second order book dataset for Polymarket's 5-minute crypto up/down markets across seven coins, spanning two months with ~26.8 million observations. It addresses the lack of historical data for backtesting trading bots on these markets, with clear schema documentation and known limitations. The project is interesting as a practical resource for algorithmic traders and researchers analyzing prediction market microstructure.

Target audience: data engineers, quantitative analysts, crypto traders, researchers

Repository: https://kacho.io/polymarket-5min-crypto-dataset

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