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 |
|---|---|
| Todi: Maxim Mrva vs Alex Barrena | 100% |
| Completed Match | 100% |
| Todi: Maxim Mrva vs Alex Barrena Set 2 Winner | 100% |
| Todi: Maxim Mrva vs Alex Barrena Set 1 O/U 8.5 | 100% |
| Todi: Maxim Mrva vs Alex Barrena Set 1 Winner | 100% |
| Todi: Maxim Mrva vs Alex Barrena Set Handicap +/-1.5 | 100% |
| Todi: Maxim Mrva vs Alex Barrena Match O/U 21.5 | 0% |
| Todi: Maxim Mrva vs Alex Barrena Total Sets: O/U 2.5 | 0% |
| Todi: Maxim Mrva vs Alex Barrena Set 2 O/U 8.5 | 0% |
| Todi: Maxim Mrva vs Alex Barrena Match O/U 22.5 | 0% |
| Todi: Maxim Mrva vs Alex Barrena Set 2 O/U 9.5 | 0% |
| Todi: Maxim Mrva vs Alex Barrena Set 1 O/U 9.5 | 0% |
| Todi: Maxim Mrva vs Alex Barrena Set Handicap +/-1.5 | 0% |
| Todi: Maxim Mrva vs Alex Barrena Match O/U 23.5 | 0% |
| Todi: Maxim Mrva vs Alex Barrena Set 2 O/U 10.5 | 0% |
| Todi: Maxim Mrva vs Alex Barrena Set 1 O/U 10.5 | 0% |
Market context
Maxim Mrva faces Alex Barrena in a Challenger-level tennis match scheduled for 15 August 2026 in Todi, Italy. The current market probability sits at 100% for Mrva, reflecting either strong conviction in his form or sparse liquidity in the contract. Settlement occurs on 22 August 2026, allowing a seven-day window for the match to conclude; any cancellation, tie, or delay beyond that threshold triggers a 50-50 resolution, whilst retirement by either player awards the match to the advancing competitor.
Historical precedent from lower-tier professional tennis shows that Challenger matches rarely fail to complete once scheduled, with cancellations typically linked to weather or injury during warm-up rather than administrative delays. Mrva's career trajectory and recent ranking movements would inform whether the 100% probability reflects genuine dominance or market thinness. Comparable matches at Todi in prior years have generally proceeded as scheduled, though Italian summer weather can occasionally disrupt clay-court tournaments. The absence of any reported injury concerns or withdrawal notices as of early August 2026 supports match completion likelihood.
Traders should monitor the ATP official calendar for any schedule adjustments or player withdrawals in the week preceding 15 August. Recent form data from ATP databases and Flashscore will clarify whether Mrva's implied certainty aligns with current ranking positions and head-to-head records. USDC settlement mechanics on btc-prediction.bet mean the contract resolves directly to stablecoin without volatility exposure to BTC or ETH spot rates, reducing macro noise in this particular market.
Methodology
This page reads Todi: Maxim Mrva vs Alex Barrena 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 alongside for venue context. 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.
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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