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 |
|---|---|
| Plovdiv 2: Gabriele Piraino vs Carlos Sanchez Jover | 100% |
| Completed Match | 100% |
| Plovdiv 2: Gabriele Piraino vs Carlos Sanchez Jover Set 1 Winner | 100% |
| Plovdiv 2: Gabriele Piraino vs Carlos Sanchez Jover Set 2 Winner | 100% |
| Plovdiv 2: Gabriele Piraino vs Carlos Sanchez Jover Set 1 O/U 8.5 | 100% |
| Plovdiv 2: Gabriele Piraino vs Carlos Sanchez Jover Set 1 O/U 9.5 | 100% |
| Plovdiv 2: Gabriele Piraino vs Carlos Sanchez Jover Set Handicap +/-1.5 | 100% |
| Plovdiv 2: Gabriele Piraino vs Carlos Sanchez Jover Set 1 O/U 10.5 | 100% |
| Plovdiv 2: Gabriele Piraino vs Carlos Sanchez Jover Total Sets: O/U 2.5 | 0% |
| Plovdiv 2: Gabriele Piraino vs Carlos Sanchez Jover Set 2 O/U 8.5 | 0% |
| Plovdiv 2: Gabriele Piraino vs Carlos Sanchez Jover Match O/U 21.5 | 0% |
| Plovdiv 2: Gabriele Piraino vs Carlos Sanchez Jover Set 2 O/U 9.5 | 0% |
| Plovdiv 2: Gabriele Piraino vs Carlos Sanchez Jover Match O/U 22.5 | 0% |
| Plovdiv 2: Gabriele Piraino vs Carlos Sanchez Jover Set 2 O/U 10.5 | 0% |
| Plovdiv 2: Gabriele Piraino vs Carlos Sanchez Jover Match O/U 23.5 | 0% |
| Plovdiv 2: Gabriele Piraino vs Carlos Sanchez Jover Set Handicap +/-1.5 | 0% |
Market context
The Plovdiv 2 semifinal between Gabriele Piraino and Carlos Sanchez Jover is already live on public scoreboards, and several listings show Piraino leading 2-0 in sets, which would normally point the market towards a straightforward win-or-loss settlement rather than a 50-50 fallback. LiveScore and 365Scores both show Piraino ahead, while SofaScore lists the match on Court 1 on outdoor clay in Plovdiv, matching the event setup used by the contract.[1][2][11]
The current **100% YES** crowd price is best read as a certainty view on the match being resolved on the main binary outcome, not as a statement that Piraino must win. Comparable pre-match and in-play tennis markets on Challenger events often trade close to the live scoreboard when a match is deep into play, but the contract’s settlement mechanics matter more here: if the match is completed, the winner decides it; if it is abandoned or delayed beyond the window without a result, the market reverts to 50-50. Tennis Explorer’s pre-match odds had Sanchez Jover as a modest favourite, which underlines how much the live state has shifted relative to the pre-start read.[4][16]
Traders should watch for the official match status, not just the point score, because the key catalyst is whether the fixture is formally completed before the 7-day delay rule bites. Any suspension for weather, scheduling compression on the Plovdiv clay courts, or a withdrawal after the match has begun can change the outcome from a clean win/loss resolution into the market’s fallback branch. The broader crypto angle is mechanical rather than directional: the contract settles in USDC on-chain, so the relevant risk is event resolution timing and exchange liquidity, not BTC or ETH price unless wider market stress affects collateral, funding, or participation.
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 — sit alongside as off-chain reference points so you can see how the contract translates across regulatory and settlement regimes.
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.
UK Frequently Asked Questions
- 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.
- Can I use Bitcoin directly?
- No, Polymarket operates exclusively in USDC on Polygon. You can bridge BTC to USDC via an exchange or bridge service and deposit on Polygon — typically 10-30 minutes processing time.
- Is Polymarket legal in the UK?
- Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.
- Do I pay tax on prediction market profits in the UK?
- UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.
- How do I deposit on Polymarket from the UK?
- UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.
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