Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via March Madness Predictions) Pick polygram.ink (preferred broker) |
42% | 58% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | See live odds → |
Polymarket (direct) polymarket.com |
42% | 58% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | See live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | See live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | See live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | See live odds → |
Market context
Bitcoin is trading close to the middle of a well-defined August range, with spot prices around the low-$63,000s after a weak start to the month. That leaves the market’s 42% “Yes” probability pointing to a slight bias towards BTC finishing higher than its midday 3 August Binance close, but not by enough to imply a strong directional edge; recent readings show the coin oscillating between roughly $62,500 and $63,500 rather than breaking trend decisively.[1][3][18]
The main historical frame is that August has tended to be a difficult month for Bitcoin, with seasonal data showing a negative median outcome and a run of red closes since 2022. BTC is also still well below its October 2025 peak and has been consolidating after a sharp first-half 2026 drawdown, so traders are looking at a market that has more often rewarded dip-buying than sustained follow-through on one-day horizons.[4][6][17]
For the next 24 hours, the key catalysts are macro headlines, ETF flow sensitivity and any change in the regulatory or risk backdrop, because those have been driving the tone around BTC more than idiosyncratic crypto news. One current overhang cited by market coverage is pressure from the Coldcard hardware-wallet incident and a cautious institutional bid, while the recent inability of geopolitical de-escalation to lift price suggests traders will be watching whether BTC can hold the $62,400–$62,500 support area into the settlement window.[1]
Methodology
Sports-specific comparison page for Bitcoin Up or Down on August 4?. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi or Manifold.
Resolution & payout
Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.
FAQ
- When do sports markets resolve?
- Typically within hours of the official final whistle. Polymarket uses UMA Optimistic Oracle with source URLs pointing at official league data feeds — e.g. the Premier League for EPL markets, UEFA for Champions League, FIFA for World Cup.
- Can I bet on individual matches?
- Yes, Polymarket lists every major Premier League / Champions League / World Cup match as its own market. Liquidity varies — top matches like El Clásico or a semi-final often have six-figure pools, lower-league games closer to three-figure.
- What are live sports odds on Polymarket?
- Some top-tier matches stay open during play — you can trade the half-time probability in the 70th minute. Polymarket mid-prices update second-by-second; any frontend mirroring the order book shows the same movement.
- How fast do sports winnings settle?
- Once the official league outcome is logged in the UMA Oracle (typically 1-2 hours after the final whistle), Polymarket's smart contract triggers USDC payout. To your wallet within minutes.
- Can I import form data and lineups?
- This page shows the live Polymarket quote as an implied probability. Form data and lineups must be researched separately via sports data providers (e.g. Soccerway, ESPN, FBref) — we surface the market probability, not the sport analysis.
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