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 |
|---|---|
| Coventry City (-1.5) | 100% |
| O/U 0.5 | 100% |
| O/U 1.5 | 100% |
| 1st Half O/U 0.5 | 100% |
| 1st Half O/U 1.5 | 100% |
| Coventry City O/U 0.5 | 100% |
| Coventry City O/U 1.5 | 100% |
| Coventry City 1st Half O/U 0.5 | 100% |
| Coventry City 1st Half O/U 1.5 | 100% |
| AS Monaco (-1.5) | 0% |
| Coventry City (-2.5) | 0% |
| AS Monaco (-2.5) | 0% |
| O/U 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 2.5 | 0% |
| Coventry City O/U 2.5 | 0% |
| AS Monaco O/U 0.5 | 0% |
| AS Monaco O/U 1.5 | 0% |
| AS Monaco O/U 2.5 | 0% |
| AS Monaco 1st Half O/U 0.5 | 0% |
| AS Monaco 1st Half O/U 1.5 | 0% |
| Both Teams to Score in Second Half | 0% |
| 2nd Half O/U 0.5 | 0% |
| 2nd Half O/U 1.5 | 0% |
| 2nd Half O/U 2.5 | 0% |
| Coventry City 2nd Half O/U 0.5 | 0% |
| Coventry City 2nd Half O/U 1.5 | 0% |
| AS Monaco 2nd Half O/U 0.5 | 0% |
| AS Monaco 2nd Half O/U 1.5 | 0% |
Market context
Coventry City will face AS Monaco in a pre-season friendly on 14 August at 2:00 PM ET, with settlement occurring at 18:30 UTC that same day. The fixture forms part of both clubs' preparations ahead of the 2024–25 competitive season, though exact squad composition and injury status remain fluid until closer to kick-off. The 100% implied probability reflects near-certainty that additional betting markets will be offered for this match, a standard practice for high-profile friendlies involving established European sides.
Historical precedent suggests club friendlies involving Championship and Ligue 1 sides consistently attract supplementary market offerings beyond standard match outcomes. Comparable fixtures—such as pre-season encounters between mid-tier English and continental clubs—have generated secondary markets covering goal totals, first-half results, and player-specific props. The current probability aligns with platform behaviour rather than event likelihood, indicating traders expect the market cluster to expand rather than contract.
Key catalysts include official team news releases confirming squad availability, which typically arrive 48–72 hours before kick-off, and any late withdrawals due to injury or competitive rotation. Fixture scheduling announcements from both clubs' official channels will clarify whether additional markets launch before or after the match begins. USDC settlement mechanics remain standard for this market type, with on-chain confirmation occurring post-match once official results are verified. Traders should monitor both clubs' social media and official websites for squad announcements, as these directly influence whether secondary markets materialise and at what odds.
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.
- What does a transaction cost on Polygon?
- Polygon gas is typically under $0.01 per transaction. A full trade cycle (Approve + Order + Fill) totals around $0.03 — compared to $5-50 on Ethereum mainnet.
- 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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