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 2 Winner | 100% |
| Game 3 Winner | 100% |
| Match Winner | 100% |
| O/U 3.5 Games | 100% |
| O/U 4.5 Games | 100% |
| Ends in Daytime | 100% |
| Both Teams Beat Roshan | 50% |
| Any Player Ultra Kill | 50% |
| Any Player Rampage | 50% |
| Both Teams Beat Roshan | 50% |
| Any Player Ultra Kill | 50% |
| Any Player Rampage | 50% |
| Both Teams Beat Roshan | 50% |
| Any Player Ultra Kill | 50% |
| Any Player Rampage | 50% |
| Both Teams Beat Roshan | 50% |
| Any Player Ultra Kill | 50% |
| Any Player Rampage | 50% |
| Both Teams Beat Roshan | 50% |
| Any Player Ultra Kill | 50% |
| Any Player Rampage | 50% |
| Both Teams Destroy Barracks | 10% |
| Game 1 Winner | 0% |
| Game 4 Winner | 0% |
| Ends in Daytime | 0% |
| Ends in Daytime | 0% |
| Both Teams Destroy Barracks | 0% |
| Ends in Daytime | 0% |
| Both Teams Destroy Barracks | 0% |
| Ends in Daytime | 0% |
| Both Teams Destroy Barracks | 0% |
| Both Teams Destroy Barracks | 0% |
Market context
Travoman Team face Stray Team in the BetBoom Streamers Battle Playoffs grand final, a best-of-five Dota 2 series whose result will decide the market unless the contest is not completed and the contract falls back to its settlement rules. The current crowd price at 0% YES is hard to reconcile with the live market references, which show the game still being priced and monitored rather than treated as a dead contract; Kalshi’s page on the same matchup displayed a YES/NO book with a non-zero Stray preference, while Robinhood’s event page was also active around the fixture window.[14][20]
Historically, this pairing has been close enough to matter, but not especially balanced in recent BetBoom play. Strafe listed Stray as the favourite with 69.2% community support, yet also noted both teams had won four of their last five matches and were separated by only a couple of places in its Dota rankings.[4] More directly relevant, Travoman beat Stray 2-0 in BetBoom Streamers Battle 10 playoffs in June 2025, but Stray won the later September 2025 meeting 2-0, so recent form has not pointed in one direction for long.[16][13][1]
The main catalysts are simple: confirmation that the grand final is actually played, the start time, and whether the series runs to completion before the 7-day backstop in the contract terms.[2] For a prediction market settled in USDC, the practical risk is not just who wins maps, but whether a postponed or abandoned final pushes resolution away from the binary outcome into the 50-50 fallback. In broader crypto terms, any sharp move in BTC or ETH is unlikely to matter directly unless it hits exchange liquidity or risk appetite, but traders often still watch USDC stability, funding rates, and order-book depth when a market is thin and price discovery is being driven by a single esports event.
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.
FAQ
- 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.
- What does a transaction cost on Polygon?
- Polygon gas is typically under $0.01 per transaction. A full trade cycle (Approve + Order + Fill) totals around $0.03 — compared to $5-50 on Ethereum mainnet.
- How does UMA secure the resolution?
- The UMA Optimistic Oracle uses a bond system: a proposer posts a bond, a two-hour challenge window opens. On dispute the losing side forfeits the bond — financial incentive for honest resolution.
- How volatile are crypto prediction markets?
- Crypto markets react to spot prices — a 5% BTC move typically shifts a "BTC above X by date" market 10-20%. Polymarket crypto market liquidity is usually six-figure USD, sufficient for active trading.
- Which crypto markets exist on Polymarket?
- Currently active markets include BTC/ETH/SOL price targets, halving dates, ETF approvals, hard-fork outcomes and Layer-2 TVL thresholds. The list updates weekly; biggest volume sits on BTC and ETH price forecasts.
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