Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
BTC Prediction Pick polygram.ink |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on BTC Prediction → |
Polymarket polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on BTC Prediction → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on BTC Prediction → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on BTC Prediction → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on BTC Prediction → |
Live odds for Polymarket-based markets come from the Polygon order book. Non-Polymarket venues show attributes only; clicking any row opens the market on BTC Prediction.
Active sub-markets
| Parma: Sebastian Ofner vs Luca Van Assche Match O/U 21.5 | 100% Over | 0% Under |
| Parma: Sebastian Ofner vs Luca Van Assche Match O/U 22.5 | 100% Over | 0% Under |
| Parma: Sebastian Ofner vs Luca Van Assche Match O/U 23.5 | 100% Over | 0% Under |
| Parma: Sebastian Ofner vs Luca Van Assche | 0% Sebastian Ofner | 100% Luca Van Assche |
| Parma: Sebastian Ofner vs Luca Van Assche Set 1 O/U 8.5 | 0% Over | 100% Under |
| Parma: Sebastian Ofner vs Luca Van Assche Set 2 Winner | 0% Ofner | 100% Assche |
Market context
Sebastian Ofner and Luca van Assche are listed for an ATP Challenger Parma match, and the market pays out on which player advances rather than on the scoreline itself, with a fallback to 50-50 only if the contest is not played, ends level, or is left unresolved beyond the delay window. The crowd price at 100% YES implies the contract is already treating an Ofner advance as the overwhelmingly expected outcome, so the main market risk is not a close tennis line but a procedural one: late scheduling changes, a withdrawal, or an interruption that prevents a clean result before the settlement deadline.[3][2]
The historical frame is thin because the two players have no recorded head-to-head, which makes direct match-up history a poor guide and leaves traders leaning more on tournament context and recent form than on rivalry data.[1][6] Public preview data also show only a narrow edge one way or the other, with Tennis.com projecting Van Assche at 53% and Ofner at 47%, which is a useful reminder that a 100% market reading can reflect position imbalance as much as sporting certainty.[3] In markets settled in USDC, that sort of skew matters because the on-chain payout depends on the event definition being satisfied, not on consensus pricing.
For catalysts, watch the ATP Challenger draw sheets, official order of play, and any late injury or retirement reports, because these are the most common triggers for a market that can revert to 50-50 if the match is not completed in time. Tournament pages and live-score services currently still carry the fixture, but if the event is reshuffled or one player withdraws, the settlement logic becomes more important than who was leading on court.[2][9] Broader crypto conditions are a secondary factor here, though spot BTC and ETH moves can still affect USDC preference and short-term risk appetite across prediction markets when the underlying sporting outcome is already heavily priced.
Methodology
This page reads Parma: Sebastian Ofner vs Luca Van Assche 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 for comparison. 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
- Where can I trade this market with the lowest fees?
- On BTC Prediction, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- How does resolution work?
- Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.
- What's the difference between YES and NO shares?
- A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.
- What does it cost to trade on BTC Prediction?
- Zero. BTC Prediction routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.
- How fast are USDC deposits?
- Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.
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