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 |
|---|---|
| ITF Kursumlijska Banja: Vladimir Osminkin vs Vlado Jankanj Set 1 O/U 8.5 | 100% |
| ITF Kursumlijska Banja: Vladimir Osminkin vs Vlado Jankanj Set 1 Winner | 100% |
| ITF Kursumlijska Banja: Vladimir Osminkin vs Vlado Jankanj Set 1 O/U 9.5 | 100% |
| ITF Kursumlijska Banja: Vladimir Osminkin vs Vlado Jankanj Set 1 O/U 10.5 | 100% |
| ITF Kursumlijska Banja: Vladimir Osminkin vs Vlado Jankanj Set 2 Winner | 50% |
| ITF Kursumlijska Banja: Vladimir Osminkin vs Vlado Jankanj Total Sets: O/U 2.5 | 50% |
| ITF Kursumlijska Banja: Vladimir Osminkin vs Vlado Jankanj Set 2 O/U 8.5 | 50% |
| ITF Kursumlijska Banja: Vladimir Osminkin vs Vlado Jankanj Set Handicap +/-1.5 | 50% |
| ITF Kursumlijska Banja: Vladimir Osminkin vs Vlado Jankanj Match O/U 21.5 | 50% |
| ITF Kursumlijska Banja: Vladimir Osminkin vs Vlado Jankanj Set 2 O/U 9.5 | 50% |
| ITF Kursumlijska Banja: Vladimir Osminkin vs Vlado Jankanj Match O/U 22.5 | 50% |
| ITF Kursumlijska Banja: Vladimir Osminkin vs Vlado Jankanj Set Handicap +/-1.5 | 50% |
| ITF Kursumlijska Banja: Vladimir Osminkin vs Vlado Jankanj Set 2 O/U 10.5 | 50% |
| ITF Kursumlijska Banja: Vladimir Osminkin vs Vlado Jankanj Match O/U 23.5 | 50% |
| ITF Kursumlijska Banja: Vladimir Osminkin vs Vlado Jankanj | 0% |
| Completed Match | 0% |
Market context
Vladimir Osminkin’s match with Vlado Jankanj in Kursumlijska Banja is scheduled on the ITF Men’s circuit, but the market is priced at **0% YES**, which implies traders see almost no chance that Osminkin is confirmed as the winner on the current information. Osminkin has little professional depth on record and has been around the low 2,000s in singles rankings on tracking sites, with a 2026 singles record that has been described as poor, while Jankanj is also outside the top tier and is listed with a similarly modest ranking profile.[1][2][3][14][15]
The cleanest comparison is that both players are operating at the same low-level ITF tier, where outcomes are often driven by late draw changes, withdrawals and walkovers rather than stable rating gaps. Osminkin has recent match results on hard courts in Kayseri, including a win over Aldin Šetkić and losses to other ITF-level opponents, while the head-to-head record shown by tennisstats says there is no previous professional meeting between Osminkin and Jankanj.[1][4][10] In that sort of spot, an ultra-low implied probability often reflects market scepticism about the match being completed in the named configuration, rather than a strong view on pure tennis ability.
Traders should watch the draw page, official order of play and any last-minute ITF scheduling updates, because the market settles to 50-50 if the match is cancelled, tied, or delayed beyond seven days without a winner. With the settlement in USDC on-chain, the main practical issue is whether the result is officially posted before the window closes; if not, the contract can flip from a player-side outcome to the fallback split even when the match has been partly staged. If broader crypto conditions matter to positioning, BTC and ETH spot direction and funding rates can still affect account-level liquidity and willingness to hold a small, event-driven market through deadline risk.
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
- 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.
- 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.
- 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.
- Are crypto prediction markets taxable in the US?
- In the US, prediction market gains are typically treated as ordinary income or short-term capital gains depending on holding period. Consult a tax professional for your specific situation — we cannot provide tax advice.
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