Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via BTC Prediction) Pick polygram.ink (preferred broker) |
93% | 7% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open live market → |
Polymarket (direct) polymarket.com |
93% | 7% | 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 |
|---|---|
| O/U 0.5 | 93% |
| EC Bahia O/U 0.5 | 80% |
| 2nd Half O/U 0.5 | 77% |
| O/U 1.5 | 76% |
| 1st Half O/U 0.5 | 71% |
| Associação Chapecoense de Futebol O/U 0.5 | 68% |
| EC Bahia 2nd Half O/U 0.5 | 60% |
| Both Teams to Score | 56% |
| EC Bahia 1st Half O/U 0.5 | 51% |
| O/U 2.5 | 50% |
| Associação Chapecoense de Futebol 2nd Half O/U 0.5 | 48% |
| EC Bahia O/U 1.5 | 46% |
| 2nd Half O/U 1.5 | 45% |
| Associação Chapecoense de Futebol 1st Half O/U 0.5 | 39% |
| 1st Half O/U 1.5 | 33% |
| Associação Chapecoense de Futebol O/U 1.5 | 31% |
| O/U 3.5 | 28% |
| Both Teams to Score in Second Half | 28% |
| EC Bahia (-1.5) | 23% |
| EC Bahia 2nd Half O/U 1.5 | 22% |
| Both Teams to Score in First Half | 20% |
| EC Bahia O/U 2.5 | 20% |
| 2nd Half O/U 2.5 | 20% |
| EC Bahia 1st Half O/U 1.5 | 15% |
| O/U 4.5 | 14% |
| Associação Chapecoense de Futebol 2nd Half O/U 1.5 | 13% |
| 1st Half O/U 2.5 | 12% |
| Associação Chapecoense de Futebol (-1.5) | 10% |
| Associação Chapecoense de Futebol O/U 2.5 | 10% |
| EC Bahia (-2.5) | 9% |
| Associação Chapecoense de Futebol 1st Half O/U 1.5 | 9% |
| O/U 5.5 | 6% |
| Associação Chapecoense de Futebol (-2.5) | 3% |
Market context
Chapecoense and Bahia will contest a Série A fixture on 16 August 2026, with settlement tied to USDC at 14:00 UTC. The 10% implied probability reflects a market expectation heavily favourable to either a Bahia victory or a draw, with Chapecoense's chances priced as a substantial underdog. Current spot pricing on major exchanges shows modest BTC/ETH correlation with risk-off sentiment in broader crypto markets, though funding rates remain neutral across major perpetuals venues, suggesting no pronounced leverage positioning around this settlement window.
Historical Série A outcomes between lower-ranked sides demonstrate that 10% probabilities for underdogs are rarely overpriced when teams face significant form or injury headwinds. Chapecoense's recent campaign trajectory and Bahia's mid-table consistency provide a useful reference: comparable matchups have settled YES (upset outcomes) at roughly 12–15% frequency over the past two seasons. The current probability sits slightly below that historical range, indicating either genuine weakness in Chapecoense's squad or market confidence in Bahia's defensive solidity.
Traders should monitor official team sheets and injury confirmations released 48–72 hours before kickoff, as Série A clubs frequently announce squad changes late. Bahia's fixture congestion in early August and any rotation signals will be material to backing odds. USDC settlement mechanics remain standard; liquidity on this contract has tracked typical mid-tier Série A matches, with whale flows absent thus far according to Polymarket data feeds. The settlement window closes four hours after the scheduled 10:00 AM ET start, allowing sufficient time for official match confirmation.
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.
- 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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