Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via BTC Prediction) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open live market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open live market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open live market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open live market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open live market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Livesport Prague Open: Marie Bouzkova vs Carol Young Suh Lee | 100% |
| Completed Match | 100% |
| Livesport Prague Open: Marie Bouzkova vs Carol Young Suh Lee Set 1 Winner | 100% |
| Livesport Prague Open: Marie Bouzkova vs Carol Young Suh Lee Set 1 O/U 8.5 | 100% |
| Livesport Prague Open: Marie Bouzkova vs Carol Young Suh Lee Match O/U 21.5 | 100% |
| Livesport Prague Open: Marie Bouzkova vs Carol Young Suh Lee Set 2 Winner | 100% |
| Livesport Prague Open: Marie Bouzkova vs Carol Young Suh Lee Set 2 O/U 8.5 | 100% |
| Livesport Prague Open: Marie Bouzkova vs Carol Young Suh Lee Set Handicap +/-1.5 | 100% |
| Livesport Prague Open: Marie Bouzkova vs Carol Young Suh Lee Set 1 O/U 9.5 | 100% |
| Livesport Prague Open: Marie Bouzkova vs Carol Young Suh Lee Set 2 O/U 9.5 | 100% |
| Livesport Prague Open: Marie Bouzkova vs Carol Young Suh Lee Set 1 O/U 10.5 | 100% |
| Livesport Prague Open: Marie Bouzkova vs Carol Young Suh Lee Total Sets: O/U 2.5 | 0% |
| Livesport Prague Open: Marie Bouzkova vs Carol Young Suh Lee Match O/U 22.5 | 0% |
| Livesport Prague Open: Marie Bouzkova vs Carol Young Suh Lee Set Handicap +/-1.5 | 0% |
| Livesport Prague Open: Marie Bouzkova vs Carol Young Suh Lee Match O/U 23.5 | 0% |
| Livesport Prague Open: Marie Bouzkova vs Carol Young Suh Lee Set 2 O/U 10.5 | 0% |
Market context
Marie Bouzkova’s home match against Carol Young Suh Lee in Prague is the event behind this contract, and the market is already trading as if Bouzkova is highly likely to advance. One live listing shows Bouzkova priced around an 84% win probability, while a separate Polymarket book on the same match showed about $59.5K in volume and a similar favourite setup, which is consistent with a lopsided tennis line rather than a balanced coin-flip[2][1].
For a 100% YES price, the main comparison is not match quality but execution risk: the contract resolves on Bouzkova advancing, but drops to 50-50 if the match is cancelled, not played, or is delayed more than seven days without a winner. That means the implied certainty can be fragile if there is any scheduling disruption, withdrawal, or weather-related postponement, even when the on-court favourite is obvious. Preview pieces from tennis outlets also point to Bouzkova as the expected winner, including straight-sets projections, which helps explain why the market is concentrated on one side[4][3].
The key catalysts are the actual start time, any official order-of-play changes from the Prague Open, and whether either player is reported as withdrawn before first serve. Because this is a sports market settled on-chain in USDC, price can stay pinned near 100% until a formal result appears, but it can also reprice sharply if the match slips beyond the seven-day window or is abandoned after the start without completion. The Polymarket event page is the cleanest market-reference point for volume and timing, while tennis preview coverage is mainly useful for assessing whether the favourite status is based on form or just home-court narrative[1][2].
Methodology
Methodologically this overview focuses on on-chain pricing: Polymarket's live mid comes from the Polygon conditional-token order book and settles automatically in USDC. The other three venues — Kalshi, Betfair, Manifold — sit alongside as off-chain reference points so you can see how the contract translates across regulatory and settlement regimes.
Resolution & payout
Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.
Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.
FAQ
- What are crypto prediction markets?
- Crypto prediction markets are on-chain smart contracts where you buy YES or NO shares on a future crypto event (e.g. "BTC above $100k by year-end"). The market price between 0¢ and 100¢ is the implied probability.
- Why USDC and not ETH or USDT?
- USDC is the Polygon standard — audited reserves (Circle, monthly attestation), deepest order book, low gas costs. ETH volatility would distort probability quotes; USDT has thinner Polygon liquidity than USDC.
- Can I use Bitcoin directly?
- No, Polymarket operates exclusively in USDC on Polygon. You can bridge BTC to USDC via an exchange or bridge service and deposit on Polygon — typically 10-30 minutes processing time.
- How does UMA secure the resolution?
- The UMA Optimistic Oracle uses a bond system: a proposer posts a bond, a two-hour challenge window opens. On dispute the losing side forfeits the bond — financial incentive for honest resolution.
- How volatile are crypto prediction markets?
- Crypto markets react to spot prices — a 5% BTC move typically shifts a "BTC above X by date" market 10-20%. Polymarket crypto market liquidity is usually six-figure USD, sufficient for active trading.
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