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
| Mallorca Championships: Adam Walton vs Nick Kyrgios | 100% Adam Walton | 0% Nick Kyrgios |
| Completed Match | 100% YES | 0% NO |
| Mallorca Championships: Adam Walton vs Nick Kyrgios Set 1 O/U 8.5 | 100% Over | 0% Under |
| Mallorca Championships: Adam Walton vs Nick Kyrgios Set Handicap +/-1.5 | 0% Kyrgios | 100% Walton |
| Mallorca Championships: Adam Walton vs Nick Kyrgios Total Sets: O/U 2.5 | 0% Over 2.5 | 100% Under 2.5 |
| Mallorca Championships: Adam Walton vs Nick Kyrgios Set 1 O/U 9.5 | 0% Over | 100% Under |
Market context
Adam Walton faces Nick Kyrgios in the first round at Mallorca on grass, with the listed start time at 15:30 UTC and sportsbook pricing leaning to Kyrgios as the narrower favourite. FanDuel had the match opening at 11:30am ET, while other listings place Kyrgios around 1.67 in decimal odds, which is broadly consistent with a market expecting him to advance but not as a heavy lock.[7][2][3]
The 100% crowd-implied **YES** price implies the market is effectively treating a Kyrgios advance as the base case, but the on-chain contract still settles only on the match outcome or, if no result is recorded, on the fallback terms. That matters in a grass-court event where retirements, walkovers, or weather interruptions can create binary settlement risk for prediction markets even when the tennis market itself is one-sided; comparable previews also framed Kyrgios as the more likely winner in straight sets, but not without match volatility.[1][5]
For traders, the key catalyst is whether the match is actually staged on schedule and completed within the seven-day window, since a non-played or unresolved fixture would push the contract to 50-50 under its rules. Any late schedule reshuffle, withdrawal, or in-match retirement is therefore more relevant here than broad BTC or ETH tape, although wider crypto risk sentiment can still affect secondary-market pricing and USDC liquidity around the event window. Live match pages were already publishing the fixture as an active centre-court encounter, so the main watchpoint is whether that status changes before play begins.[3][9]
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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