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 |
|---|---|
| Game 1 Winner | 100% |
| Match Winner | 75% |
| Game 2 Winner | 52% |
| Game Handicap: NGX (-1.5) vs Vici Gaming (+1.5) | 52% |
| Both Teams Beat Roshan | 50% |
| Any Player Ultra Kill | 50% |
| Any Player Rampage | 50% |
| Ends in Daytime | 50% |
| Both Teams Beat Roshan | 50% |
| Both Teams Destroy Barracks | 50% |
| Any Player Ultra Kill | 50% |
| Any Player Rampage | 50% |
| Ends in Daytime | 50% |
| Both Teams Beat Roshan | 50% |
| Both Teams Destroy Barracks | 50% |
| Any Player Ultra Kill | 50% |
| Any Player Rampage | 50% |
| First Blood in Game 1? | 50% |
| First Blood in Game 2? | 50% |
| Total Kills Over/Under 50.5 in Game 2? | 50% |
| O/U 2.5 Games | 48% |
| Ends in Daytime | 10% |
| Both Teams Destroy Barracks | 10% |
| Total Kills Over/Under 50.5 in Game 1? | 10% |
| Total Kills Over/Under 55.5 in Game 1? | 10% |
| Total Kills Over/Under 60.5 in Game 1? | 10% |
| Total Kills Over/Under 65.5 in Game 1? | 1% |
| Game Handicap: VG (-1.5) vs Nigma Galaxy (+1.5) | 0% |
Market context
Nigma Galaxy, the European organisation featuring former Team Liquid players, face Vici Gaming, China's perennial powerhouse, in a best-of-three Dota 2 matchup during The International 2026 group stage on 15 August. The fixture carries substantial weight in determining seeding for the main event, with both squads competing for positioning in a tournament where prize distribution and playoff brackets hinge on group-stage performance. Settlement occurs on-chain via USDC at 11:20 UTC, with the market currently pricing Nigma Galaxy at 59 per cent implied probability—a modest favourite's premium reflecting competitive uncertainty.
Historical precedent suggests group-stage Dota 2 matches between established regions remain volatile prediction targets. Vici Gaming's track record at The International spans multiple top-four finishes and consistent meta adaptation, whilst Nigma Galaxy's roster construction has proven inconsistent across recent qualifiers. When comparable European-versus-Chinese matchups have occurred at prior Internationals, the crowd has typically overweighted recent LAN results and underweighted patch-specific hero pool advantages; Vici's superior depth in current meta heroes (particularly strength-based cores) has historically favoured them in similar scenarios, yet Nigma's individual mechanical skill in mid and carry positions occasionally produces upsets.
Traders should monitor official schedule confirmations through the Dota 2 esports calendar and any last-minute roster changes or stand-in announcements, which can shift win probabilities by 8–12 percentage points. Patch updates released within 72 hours of the match may favour one region's preparation depth. Funding rates on major crypto exchanges have remained stable through August, suggesting macro volatility is not materially affecting prediction market participation; USDC liquidity for settlement remains robust across Curve and Uniswap.
Methodology
This page reads Dota 2: Nigma Galaxy vs Vici Gaming (BO3) - The International Group Stage 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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