Accessing Old Polymarket Order Book Snapshots
Access old Polymarket order book snapshots for resolved BTC, ETH, and SOL Up/Down markets with historical bid/ask depth and metadata.
Accessing old Polymarket order book snapshots is essential when you want to understand how a resolved market actually traded before settlement. Price charts can show direction, but snapshots show bid/ask depth, spread, and available liquidity.
What Old Snapshots Help With
- Replaying a resolved market from open to close
- Checking whether a strategy entry had enough liquidity
- Measuring bid-ask spread before market resolution
- Comparing Polymarket movement with Binance BTC/USDT depth
Best Workflow
Start with the market slug, fetch the historical snapshots for the market window, then compute spread, depth, and fill quality at each timestamp. For BTC markets, add Binance Spot and Futures context when the underlying market matters.