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 |
|---|---|
| Completed Match | 100% |
| Hamburg European Open, Qualification: Jessica Pieri vs Maria Lourdes Carle Set 1 Winner | 100% |
| Hamburg European Open, Qualification: Jessica Pieri vs Maria Lourdes Carle Total Sets: O/U 2.5 | 100% |
| Hamburg European Open, Qualification: Jessica Pieri vs Maria Lourdes Carle | 0% |
| Hamburg European Open, Qualification: Jessica Pieri vs Maria Lourdes Carle Set 1 O/U 8.5 | 0% |
| Hamburg European Open, Qualification: Jessica Pieri vs Maria Lourdes Carle Match O/U 21.5 | 0% |
| Hamburg European Open, Qualification: Jessica Pieri vs Maria Lourdes Carle Set 2 O/U 8.5 | 0% |
| Hamburg European Open, Qualification: Jessica Pieri vs Maria Lourdes Carle Set 2 Winner | 0% |
| Hamburg European Open, Qualification: Jessica Pieri vs Maria Lourdes Carle Set Handicap +/-1.5 | 0% |
| Hamburg European Open, Qualification: Jessica Pieri vs Maria Lourdes Carle Set 1 O/U 9.5 | 0% |
| Hamburg European Open, Qualification: Jessica Pieri vs Maria Lourdes Carle Set 2 O/U 9.5 | 0% |
| Hamburg European Open, Qualification: Jessica Pieri vs Maria Lourdes Carle Match O/U 22.5 | 0% |
| Hamburg European Open, Qualification: Jessica Pieri vs Maria Lourdes Carle Set 1 O/U 10.5 | 0% |
| Hamburg European Open, Qualification: Jessica Pieri vs Maria Lourdes Carle Set Handicap +/-1.5 | 0% |
| Hamburg European Open, Qualification: Jessica Pieri vs Maria Lourdes Carle Set 2 O/U 10.5 | 0% |
| Hamburg European Open, Qualification: Jessica Pieri vs Maria Lourdes Carle Match O/U 23.5 | 0% |
Market context
The Hamburg European Open qualification match between Jessica Pieri and Maria Lourdes Carle, scheduled for 20 July 2026, has already concluded with Carle advancing 2–1 in sets, rendering the prediction market’s 0% YES probability for Pieri a factual reflection of the completed result rather than a speculative forecast [2][5]. Since the match occurred before the settlement window’s 2026 deadline, the contract resolves definitively to Maria Lourdes Carle under standard on-chain mechanics, with USDC settlement triggered automatically once the official WTA result is verified on the blockchain.
Historically, prediction markets for tennis matches that conclude before the settlement deadline resolve instantly to the actual winner, with no 50-50 tie outcome unless the match is cancelled pre-play; this aligns with prior WTA qualification contracts on btc-prediction.bet where post-match results locked in immediately, bypassing macro BTC/ETH volatility [3]. The zero probability for Pieri mirrors similar cases where a player lost their opening match, confirming that crowd pricing correctly absorbed the final score rather than anticipating a future event.
Traders should monitor the WTA’s official match archive for any retroactive disqualifications or doping-related overturns, though such events are rare in qualification rounds [2]. No further catalysts exist, as the match date has passed and the result is immutable; funding rates or whale flows on crypto exchanges remain irrelevant to this settled contract, which now functions purely as a USDC redemption instrument tied to a confirmed sporting outcome.
Methodology
This page reads Hamburg European Open, Qualification: Jessica Pieri vs Maria Lourdes Carle on-chain. Polymarket's quote comes directly from the Polygon order book — the only comparable venue with on-chain settlement. Kalshi (USD, off-chain), Betfair (GBP/EUR, off-chain) and Manifold (play-money) are listed alongside for venue context. Every CTA routes to BTC Prediction, which mirrors the Polymarket order book directly.
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.
- What does a transaction cost on Polygon?
- Polygon gas is typically under $0.01 per transaction. A full trade cycle (Approve + Order + Fill) totals around $0.03 — compared to $5-50 on Ethereum mainnet.
- 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.
- Are crypto prediction markets taxable in the US?
- In the US, prediction market gains are typically treated as ordinary income or short-term capital gains depending on holding period. Consult a tax professional for your specific situation — we cannot provide tax advice.
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