90-Day ETH 1h Polymarket Order Book History
Access 90-day ETH 1h Polymarket order book history with UP and DOWN bids, asks, depth, spreads, and resolved outcomes.
90-day ETH 1h Polymarket order book history gives traders and researchers a rolling multi-month sample of Ethereum Up/Down markets. PolyHistorical captures full-depth order book snapshots at 300ms granularity, so order book analysis can account for spread, liquidity, and the prices that were available at each point in a market.
A complete 90-day calendar window can contain up to roughly 2,160 scheduled 1h windows before launch dates, feed gaps, or unavailable markets are considered. Always measure the returned coverage instead of assuming every possible window exists.
Why Use a 90-Day Window?
Hourly contracts expose wider volatility regimes and give signals more time to interact with changing spreads and depth. A 90-day lookback is long enough to compare multiple volatility and liquidity regimes while remaining practical for rolling research and repeated model validation.
What Is Preserved in the Order Book
The 90-day history keeps the price ladder rather than reducing each ETH 1h market to a midpoint. That distinction matters whenever a study depends on executable prices or available size.
- UP and DOWN bids and asks at every captured depth level
- Top-of-book spread and depth available behind the best quote
- Timestamped snapshots that can be replayed in market order
- Resolution metadata for grouping winning and losing outcomes
Quality Checks Before Analysis
Historical depth is only useful when the sample is auditable. Check that timestamps are ordered, both outcome tokens are present, price levels are valid, and market resolution is known. Flag snapshot gaps instead of forward-filling across them, because invented book states can create fills that never existed.
For strategy work, avoid using midpoint as an execution price. A midpoint is descriptive; an order must interact with the bid or ask and may consume several levels when the requested size is larger than top-of-book liquidity.
90 Days vs 120 Days
Choose 90 days when that window matches your subscription, compute budget, or validation schedule. The 120-day ETH 1h order book history page covers the longer alternative. Using both as rolling horizons can show whether a result is stable or overly dependent on the most recent regime.