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 |
|---|---|
| OFI (-1.5) | 100% |
| OFI (-2.5) | 100% |
| O/U 0.5 | 100% |
| O/U 1.5 | 100% |
| O/U 2.5 | 100% |
| 1st Half O/U 0.5 | 100% |
| OFI O/U 0.5 | 100% |
| OFI O/U 1.5 | 100% |
| OFI O/U 2.5 | 100% |
| OFI 1st Half O/U 0.5 | 100% |
| 2nd Half O/U 0.5 | 100% |
| 2nd Half O/U 1.5 | 100% |
| OFI 2nd Half O/U 0.5 | 100% |
| OFI 2nd Half O/U 1.5 | 100% |
| PFK CSKA Sofia 2nd Half O/U 0.5 | 10% |
| 2nd Half O/U 2.5 | 1% |
| PFK CSKA Sofia 2nd Half O/U 1.5 | 1% |
| PFK CSKA Sofia (-1.5) | 0% |
| PFK CSKA Sofia (-2.5) | 0% |
| O/U 3.5 | 0% |
| O/U 4.5 | 0% |
| O/U 5.5 | 0% |
| Both Teams to Score | 0% |
| Both Teams to Score in First Half | 0% |
| 1st Half O/U 1.5 | 0% |
| 1st Half O/U 2.5 | 0% |
| PFK CSKA Sofia O/U 0.5 | 0% |
| PFK CSKA Sofia O/U 1.5 | 0% |
| PFK CSKA Sofia O/U 2.5 | 0% |
| OFI 1st Half O/U 1.5 | 0% |
| PFK CSKA Sofia 1st Half O/U 0.5 | 0% |
| PFK CSKA Sofia 1st Half O/U 1.5 | 0% |
| Both Teams to Score in Second Half | 0% |
Market context
A UEFA Europa League qualifying match between OFI Crete and PFK CSKA Sofia is scheduled for 20 August 2026 at 14:00 ET. The market for additional trading pairs on this fixture has reached 100% implied probability, suggesting near-certainty that supplementary markets will be offered before settlement closes at 18:00 UTC that day. This confidence reflects standard practice in European football liquidity provision, where secondary markets on qualifying ties typically launch once primary match outcomes become knowable or imminent.
Historical precedent from comparable UEFA qualifying fixtures shows that ancillary markets—including player performance props, corner totals, and card counts—routinely materialise within hours of kickoff. The 100% reading aligns with how prediction markets have priced similar Europa League qualifying rounds, where exchange operators consistently expand offerings to capture retail and professional volume. USDC settlement mechanics on btc-prediction.bet create minimal friction for rapid market deployment, allowing operators to add contracts without the latency constraints of traditional sports betting platforms.
Traders should monitor official UEFA fixture confirmations and any last-minute scheduling changes, which occasionally affect qualifying round timing. Team news releases from both clubs typically arrive 48–72 hours before kickoff and can shift volatility expectations. Funding rates on major perpetual exchanges may signal broader sentiment shifts if macro conditions shift between now and settlement, though the isolated nature of a single qualifying match limits direct BTC/ETH correlation. The settlement window's tight closure at 18:00 UTC means any market additions must resolve quickly, creating execution risk for late-entry positions.
Methodology
This page reads OFI vs. PFK CSKA Sofia - More Markets 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.
- Why USDC and not ETH or USDT?
- USDC is the Polygon standard — audited reserves (Circle, monthly attestation), deepest order book, low gas costs. ETH volatility would distort probability quotes; USDT has thinner Polygon liquidity than USDC.
- 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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