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
Market context
Jan Choinski and Yibing Wu were scheduled to meet in Eastbourne qualifying, and the market is effectively a binary read on whether that match is completed with a winner before the settlement cut-off. The on-chain contract should settle in USDC, so the 100% crowd-implied YES price is less a view on tennis quality than a statement that participants expect the fixture to be played and resolved within the rules window.
Comparable ATP qualification markets usually trade near certainty once live scoring feeds and sportsbook boards all show the same fixture, because the main residual risk is not match strength but late withdrawal, rain, or a start-time slip. Here, ATP live scores and third-party match trackers both show the pair on court or imminently scheduled, while sportsbook listings also priced the meeting, which is consistent with a contract that should resolve normally if play proceeds[2][5][7][8]. If the market stays pinned at 100% YES, that mainly reflects the low probability assigned to a no-contest scenario rather than any edge on Choinski or Wu.
The key catalysts are operational rather than form-based: official start confirmation, any rain interruption on the Eastbourne schedule, and whether either player withdraws before a ball is struck. Traders should watch the ATP scoreboard and live match feeds for a completed result, because if the match is abandoned after starting, the settlement language matters more than the scoreline; if it never begins or is pushed beyond the seven-day window, the contract shifts to the neutral 50-50 outcome. On-chain, that means the decisive risk is a last-minute status change, not broader BTC or ETH direction unless wider crypto liquidity conditions affect USDC demand or execution depth around settlement.
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 — are listed with their platform attributes, because they operate off-chain and a 1:1 comparison of contract mechanics isn't possible.
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
- 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.
- 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.
- 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.
- How reliable are the quoted odds?
- The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.
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