Chart and changes show stored historical probabilities, not the selected live book.
Trends
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 · Map 1 Total Rounds: Over/Under 21.5 — Over
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Rules
This market refers to the Counter-Strike match between OldBoys and Hermine Esports Club in the ESEA Advanced Europe Regular Season, initially scheduled for October 20, 2026 at 2:30 PM ET.
Free JSON for this market, no API key needed:
https://api.coinrithm.com/api/prediction-markets/events/polymarket/cs2-old1-hec-2026-10-20AI agents: call pm_data_event on the CoinRithm MCP server:
https://mcp.coinrithm.com/mcp+29 more outcomes
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