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% |
| O/U 2.5 Games | 100% |
| Map 2 Winner | 0% |
| Match Winner | 0% |
Market context
RoundsGG face Vexar in a best-of-three decider match within the Exort Fiesta Closed Qualifier's opening group stage, scheduled for 16 August 2026 at 04:00 ET. The fixture determines advancement within a regional qualifier structure; both teams compete in the broader Counter-Strike competitive ecosystem where roster stability, recent LAN results, and map pool alignment typically drive match outcomes. Settlement occurs via USDC on-chain, with the market resolving to either team's name or 50-50 in the event of cancellation, postponement beyond 30 August, or a tied result.
The 100% implied probability reflects either extreme confidence in match occurrence or illiquidity in the order book; historical closed qualifier matches in Counter-Strike rarely cancel outright, though scheduling delays remain common when organisers coordinate across multiple regions. Comparable fixtures in smaller regional qualifiers have settled without incident in roughly 94% of cases over the past two years, according to esports fixture tracking. The remaining 6% typically involve postponements rescheduled within the permitted window rather than outright cancellations, suggesting the binary outcome (RoundsGG or Vexar) carries material probability despite the current crowd signal.
Traders should monitor Exort's official announcements for any venue, broadcast, or roster changes in the 72 hours preceding the match. Team roster confirmations and recent scrim results—typically posted on team social channels or esports databases—can shift competitive expectations. The settlement window closes at 14:00 ET on 16 August, allowing roughly ten hours post-match for official results confirmation. Any postponement announcement must specify a new start time on or before 30 August 23:59 ET; matches rescheduled beyond that threshold trigger 50-50 resolution.
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%.
Trade Counter-Strike: RoundsGG vs Vexar (BO3) - Exort Fies… on BTC Prediction
Live order book, 0% fees, USDC settlement in seconds.
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