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 |
|---|---|
| Map 1 Winner | 100% |
| Match Winner | 100% |
| O/U 2.5 Games | 100% |
| Map 1 Total Rounds: Over/Under 21.5 | 100% |
| Map 1 Total Rounds: Over/Under 24.5 | 100% |
| Map 3 Total Rounds: Over/Under 21.5 | 90% |
| Map 2 Rounds Handicap: INOX Division (-3.5) vs BASEMENT BOYS (+3.5) | 90% |
| Map 3 Total Rounds: Over/Under 18.5 | 90% |
| Map 3 Total Rounds: Over/Under 27.5 | 45% |
| Map 2 Total Rounds: Over/Under 21.5 | 10% |
| Map 3 Rounds Handicap: INOX Division (-3.5) vs BASEMENT BOYS (+3.5) | 10% |
| Map 2 Rounds Handicap: INOX Division (-6.5) vs BASEMENT BOYS (+6.5) | 10% |
| Map 2 Total Rounds: Over/Under 24.5 | 10% |
| Map 2 Rounds Handicap: INOX Division (-9.5) vs BASEMENT BOYS (+9.5) | 10% |
| Map 3 Rounds Handicap: INOX Division (-6.5) vs BASEMENT BOYS (+6.5) | 10% |
| Map 3 Total Rounds: Over/Under 24.5 | 10% |
| Map 3 Rounds Handicap: INOX Division (-9.5) vs BASEMENT BOYS (+9.5) | 10% |
| Map 2 Winner | 0% |
| Map Handicap: INOX (-1.5) vs BASEMENT BOYS (+1.5) | 0% |
| Map 1 Rounds Handicap: INOX Division (-3.5) vs BASEMENT BOYS (+3.5) | 0% |
| Map 1 Rounds Handicap: INOX Division (-6.5) vs BASEMENT BOYS (+6.5) | 0% |
| Map 1 Total Rounds: Over/Under 30.5 | 0% |
| Map Handicap: BMB (-1.5) vs INOX Division (+1.5) | 0% |
Market context
BASEMENT BOYS face INOX Division in the ESL Challenger League Europe Cup #3 Playoffs semifinal on 16 August 2026, with the winner advancing to the final. The best-of-three match is scheduled for 9:00 AM ET, settling on-chain via USDC at the conclusion of play. Current market pricing reflects 100% implied probability for BASEMENT BOYS, suggesting near-certain victory according to crowd assessment.
Esports prediction markets on blockchain platforms have historically shown volatile repricing once match day arrives, particularly in lower-tier competitive circuits where roster stability and recent form data remain sparse. The ESL Challenger League sits below the Pro League tier, creating information asymmetries that often compress during live play. Previous Challenger League semifinals have resolved with upsets when underdogs fielded substitutes or when favourites faced unexpected technical issues mid-series. The 100% probability here warrants scrutiny: such extreme pricing typically reflects either overwhelming public confidence in BASEMENT BOYS' capabilities or insufficient liquidity depth to support contrarian positions.
Traders should monitor ESL's official match schedule through 16 August for any postponements, which would extend the settlement window to 30 August per contract terms. Team roster announcements and recent league standings from ESL's website will provide baseline competitive context. Funding rates on major perpetual exchanges (Deribit, Bybit) may shift if broader crypto volatility spikes near settlement, though esports markets typically decouple from macro BTC/ETH movements. The match cancellation clause—resolving to 50-50 if unplayed—represents tail risk worth pricing in given the Challenger League's occasional scheduling instability.
Methodology
This page reads Counter-Strike: BASEMENT BOYS vs INOX Division (BO3) - ESL Challenger League Europe Cup #3 Playoffs 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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