Chart and changes show stored historical probabilities, not the selected live book.
Selected row: book midpoint. Other rows: stored references, possibly normalized; 24h changes use stored history.
Venue terms
Source: Polymarket
Informational venue terms only; CoinRithm paper trading uses its own rules.
Market depth · Up
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Book received (not venue quote time): —
Related Markets
Related questions for context, not a comparison of equivalent contracts.
Bitcoin Up or Down - October 9, 4:00PM-8:00PM ET
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Bitcoin Up or Down - October 10, 12:00AM-4:00AM ET
BTC price on Oct 9, 2026 at 5pm EDT?
What price will Bitcoin hit in October?
What price will Bitcoin hit in 2026?
Rules
This market will resolve to "Up" if the time-weighted average price (TWAP) of Bitcoin, generated by Chainlink, of the time range specified in the title is greater than or equal to the price at the beginning of that range.
Free JSON for this market, no API key needed:
https://api.coinrithm.com/api/prediction-markets/events/polymarket/btc-updown-4h-1791619200AI agents: call pm_data_event on the CoinRithm MCP server:
https://mcp.coinrithm.com/mcp+47 more outcomes
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