Add Manifold 1h OHLCV sample (top 60 markets, last 6 months)

Add Polymarket 1h OHLCV sample (top 70 markets, last 6 months)

Filter out Kalshi markets from metadata — only Polymarket and Manifold

Remove Kalshi, fix license to other, update citation year to 2026, add metadata note

Add full markets metadata (8.18M markets)

Rewrite dataset card - factual, no sales copy

Add dataset card

initial commit