Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via BTC Prediction) Pick polygram.ink (preferred broker) |
0% | 100% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open live market → |
Polymarket (direct) polymarket.com |
0% | 100% | 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 |
|---|---|
| EC Bahia (-1.5) | 0% |
| CR Vasco da Gama (-1.5) | 0% |
| EC Bahia (-2.5) | 0% |
| CR Vasco da Gama (-2.5) | 0% |
| O/U 0.5 | 0% |
| O/U 1.5 | 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 0.5 | 0% |
| 1st Half O/U 1.5 | 0% |
| 1st Half O/U 2.5 | 0% |
| EC Bahia O/U 0.5 | 0% |
| EC Bahia O/U 1.5 | 0% |
| EC Bahia O/U 2.5 | 0% |
| CR Vasco da Gama O/U 0.5 | 0% |
| CR Vasco da Gama O/U 1.5 | 0% |
| CR Vasco da Gama O/U 2.5 | 0% |
| EC Bahia 1st Half O/U 0.5 | 0% |
| EC Bahia 1st Half O/U 1.5 | 0% |
| CR Vasco da Gama 1st Half O/U 0.5 | 0% |
| CR Vasco da Gama 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% |
| EC Bahia 2nd Half O/U 0.5 | 0% |
| EC Bahia 2nd Half O/U 1.5 | 0% |
| CR Vasco da Gama 2nd Half O/U 0.5 | 0% |
| CR Vasco da Gama 2nd Half O/U 1.5 | 0% |
Market context
Bahia and Vasco da Gama are scheduled to meet in Brazil’s Série A, with the market here covering the “more markets” contract rather than a simple match-winner outcome. The crowd is pricing **0% YES**, which is unusually low for a football contract unless the settlement rule is tied to a narrowly defined auxiliary condition or the market has become stale ahead of expiry; on-chain markets of this kind usually settle in USDC, so price can stay pinned near zero if traders think the named extra condition is unlikely to be verified in the official result feed rather than the scoreline itself. [6][17]
Historical context points to Bahia being stronger at home in this fixture. Recent previews and H2H data show Bahia have dominated Vasco at Arena Fonte Nova, including eight wins and three draws in 11 meetings since the stadium opened, while broader head-to-head records also favour Bahia and multiple previews describe the side as the slight favourite with a relatively open game profile. That makes a 0% YES reading look more like a market-specific settlement judgement than a pure read on match strength, especially because independent previews for this same fixture have often projected goals and a Bahia edge rather than a one-sided away upset. [2][9][13]
A trader should watch the final official match listing, any late venue or kick-off confirmation, and the exact wording of the contract’s “more markets” criteria, because these auxiliary markets often hinge on whether a specific stat, player event, or competition condition is recorded by the designated source. For broader crypto context, the main external risk is not BTC or ETH direction directly but liquidity and risk appetite across the market: if spot weakens or funding turns aggressively negative, speculative demand on secondary prediction books can thin out, but no source in the current set links this contract to a specific whale flow or exchange dislocation. [6][16][17]
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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