
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 · You Seem Pretty Sad for a Girl So in Love - Olivia Rodrigo
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Related questions for context, not a comparison of equivalent contracts.
Billie Eilish releases a #1 Billboard album in 2026?
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Top 10 on the Billboard Hot 100 chart for the Week of Oct 31, 2026?
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Billboard Hot 100 #2 Song Week of October 31
Rules
Billboard updates the Billboard 200 albums chart each Tuesday (with adjusted release schedules on some holiday weeks), reflecting data from the previous week (Friday-Thursday).
Free JSON for this market, no API key needed:
https://api.coinrithm.com/api/prediction-markets/events/polymarket/billboard-200-1-album-week-of-october-31AI agents: call pm_data_event on the CoinRithm MCP server:
https://mcp.coinrithm.com/mcp+11 more outcomes
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