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 |
|---|---|
| Iasi Open: Anna Bondar vs Tamara Zidansek Set 1 O/U 8.5 | 100% |
| Iasi Open: Anna Bondar vs Tamara Zidansek Set 1 O/U 9.5 | 100% |
| Iasi Open: Anna Bondar vs Tamara Zidansek Set 1 O/U 10.5 | 100% |
| Iasi Open: Anna Bondar vs Tamara Zidansek Match O/U 21.5 | 78% |
| Completed Match | 50% |
| Iasi Open: Anna Bondar vs Tamara Zidansek Set 2 O/U 8.5 | 50% |
| Iasi Open: Anna Bondar vs Tamara Zidansek Set 2 O/U 9.5 | 50% |
| Iasi Open: Anna Bondar vs Tamara Zidansek Set 2 O/U 10.5 | 50% |
| Iasi Open: Anna Bondar vs Tamara Zidansek Match O/U 22.5 | 42% |
| Iasi Open: Anna Bondar vs Tamara Zidansek Match O/U 23.5 | 31% |
| Iasi Open: Anna Bondar vs Tamara Zidansek Set 2 Winner | 22% |
| Iasi Open: Anna Bondar vs Tamara Zidansek Total Sets: O/U 2.5 | 21% |
| Iasi Open: Anna Bondar vs Tamara Zidansek | 14% |
| Iasi Open: Anna Bondar vs Tamara Zidansek Set Handicap +/-1.5 | 4% |
| Iasi Open: Anna Bondar vs Tamara Zidansek Set 1 Winner | 0% |
Market context
Anna Bondar advances against Tamara Zidansek in the Iasi Open round of 16, a match originally scheduled for 8:00 AM ET on 15 July 2026. Bondar entered this contest after dispatching Sara Sorribes Tormo 7-5, 6-4 in the first round on Monday, demonstrating resilience in tight sets [1]. The market currently implies an 11% probability that Bondar wins, suggesting the crowd heavily favours Zidansek despite recent modelling that strongly supports Bondar.
Historical WTA data on second-round matches at this tier shows that players who survive narrow first-round battles often outperform pre-match odds in subsequent rounds, particularly when facing opponents with higher ranking but lower recent form. In comparable 2024–2025 Iasi Open cases, the lower-ranked qualifier won 68% of second-round matches when entering with a first-round win under pressure, framing the current 11% as potentially mispriced against Bondar’s momentum [2].
Traders should monitor the official WTA schedule for any delay or cancellation notices, as the settlement window resolves to 50-50 if the match is not completed within seven days. Key catalysts include Bondar’s recovery time after Monday’s match and Zidansek’s recent fitness reports, with no major injury announcements yet [3]. On-chain, watch for USDC funding rate shifts on btc-prediction.bet and whale flows into the YES side, which may signal institutional confidence ahead of the 12:00 UTC settlement deadline on 22 July 2026.
Methodology
This page reads Iasi Open: Anna Bondar vs Tamara Zidansek 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.
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.
- 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.
- 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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