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% |
| Both Teams Beat Roshan | 100% |
| First Blood in Game 1? | 100% |
| Match Winner | 75% |
| O/U 2.5 Games | 59% |
| Game 2 Winner | 55% |
| 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 2? | 50% |
| Total Kills Over/Under 55.5 in Game 2? | 50% |
| Game Handicap: Iron Wing (-1.5) vs Team Liquid (+1.5) | 50% |
| Total Kills Over/Under 60.5 in Game 2? | 50% |
| Total Kills Over/Under 50.5 in Game 2? | 50% |
| Ends in Daytime | 1% |
| Both Teams Destroy Barracks | 1% |
| Any Player Ultra Kill | 1% |
| Any Player Rampage | 0% |
| Game Handicap: Liquid (-1.5) vs Iron Wing (+1.5) | 0% |
| Total Kills Over/Under 55.5 in Game 1? | 0% |
| Total Kills Over/Under 60.5 in Game 1? | 0% |
| Total Kills Over/Under 50.5 in Game 1? | 0% |
| Total Kills Over/Under 65.5 in Game 1? | 0% |
Market context
The International 2026 Group Stage will feature Iron Wing against Team Liquid in a best-of-three Dota 2 match scheduled for 15 August at 01:00 ET. The current 100% crowd-implied probability reflects Team Liquid's established standing as a top-tier organisation with consistent Major-level performances, whilst Iron Wing remains a relatively newer competitive entity. The settlement window closes at 12:00 ET on the same day, allowing approximately eleven hours post-match for resolution confirmation on-chain via USDC.
Historical precedent suggests that crowd probabilities at 100% in esports matches often compress when facing established underdog narratives. Team Liquid has won two International titles and maintains a roster capable of defeating any opponent on a given day, yet group-stage formats frequently produce upset results due to map pool variance and preparation asymmetries. Recent Dota 2 Major results show that seeding advantages do not guarantee outcomes; teams ranked significantly lower have taken maps and series from favourites when meta alignment favours their draft preferences.
Traders should monitor official The International schedule updates for any postponement announcements, which would extend the settlement window to 29 August at 23:59 ET. Fixture confirmations typically arrive 48–72 hours before match time via Valve's official channels and team social media. Funding rate movements on major crypto exchanges may reflect broader esports betting sentiment, though direct correlation remains weak. The match outcome depends entirely on in-game performance; no external economic catalysts or macro BTC/ETH movements influence the result itself, though settlement speed on btc-prediction.bet may correlate with broader network congestion during the resolution period.
Methodology
This page reads Dota 2: Iron Wing vs Team Liquid (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
- 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.
- Can I use Bitcoin directly?
- No, Polymarket operates exclusively in USDC on Polygon. You can bridge BTC to USDC via an exchange or bridge service and deposit on Polygon — typically 10-30 minutes processing time.
- 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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