Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
BTC Prediction Pick polygram.ink |
0% | 100% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on BTC Prediction → |
Polymarket polymarket.com |
0% | 100% | 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
| Nottingham Open: Ann Li vs Kimberly Birrell Set 1 Winner | 0% Li | 100% Birrell |
| Nottingham Open: Ann Li vs Kimberly Birrell Match O/U 22.5 | 100% Over | 0% Under |
| Nottingham Open: Ann Li vs Kimberly Birrell Set 1 O/U 10.5 | 0% Over | 100% Under |
| Nottingham Open: Ann Li vs Kimberly Birrell Match O/U 23.5 | 100% Over | 0% Under |
| Nottingham Open: Ann Li vs Kimberly Birrell Total Sets: O/U 2.5 | 100% Over 2.5 | 0% Under 2.5 |
| Nottingham Open: Ann Li vs Kimberly Birrell Match O/U 21.5 | 100% Over | 0% Under |
Market context
Market consensus: 0% chance of nottingham open: ann li vs kimberly birrell. Prediction markets aggregate real capital to produce this probability signal. This market refers to the tennis match between Ann Li and Kimberly Birrell in the Nottingham Open, originally scheduled for June 16, 2026 at 5:00AM ET. This market will resolve to…
Methodology
This page reads Nottingham Open: Ann Li vs Kimberly Birrell 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.
- Is this market available outside the US?
- BTC Prediction is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.
- 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.
- Do I need to KYC for this market?
- Not under $1,500 of lifetime trading volume. Above that threshold, BTC Prediction triggers a quick verification flow that finishes in minutes.
Trade Nottingham Open: Ann Li vs Kimberly Birrell on BTC Prediction
Live order book, 0% fees, USDC settlement in seconds.
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