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 |
|---|---|
| The Memphis Classic, Qualification: Katherine Sebov vs Maria Aran Teixido Garcia | 100% |
| Completed Match | 100% |
| The Memphis Classic, Qualification: Katherine Sebov vs Maria Aran Teixido Garcia Set 2 Winner | 100% |
| The Memphis Classic, Qualification: Katherine Sebov vs Maria Aran Teixido Garcia Set 1 Winner | 100% |
| The Memphis Classic, Qualification: Katherine Sebov vs Maria Aran Teixido Garcia Set 2 O/U 8.5 | 100% |
| The Memphis Classic, Qualification: Katherine Sebov vs Maria Aran Teixido Garcia Set Handicap +/-1.5 | 100% |
| The Memphis Classic, Qualification: Katherine Sebov vs Maria Aran Teixido Garcia Set 2 O/U 9.5 | 100% |
| The Memphis Classic, Qualification: Katherine Sebov vs Maria Aran Teixido Garcia Set 2 O/U 10.5 | 100% |
| The Memphis Classic, Qualification: Katherine Sebov vs Maria Aran Teixido Garcia Set 1 O/U 8.5 | 0% |
| The Memphis Classic, Qualification: Katherine Sebov vs Maria Aran Teixido Garcia Match O/U 21.5 | 0% |
| The Memphis Classic, Qualification: Katherine Sebov vs Maria Aran Teixido Garcia Total Sets: O/U 2.5 | 0% |
| The Memphis Classic, Qualification: Katherine Sebov vs Maria Aran Teixido Garcia Set 1 O/U 9.5 | 0% |
| The Memphis Classic, Qualification: Katherine Sebov vs Maria Aran Teixido Garcia Match O/U 22.5 | 0% |
| The Memphis Classic, Qualification: Katherine Sebov vs Maria Aran Teixido Garcia Set 1 O/U 10.5 | 0% |
| The Memphis Classic, Qualification: Katherine Sebov vs Maria Aran Teixido Garcia Match O/U 23.5 | 0% |
Market context
Based on real-money crowd forecasting, the memphis classic, qualification: katherine sebov vs maria aran teixido garcia stands at 100% likelihood according to current market consensus. This market refers to the tennis match between Katherine Sebov and Maria Aran Teixido Garcia in the The Memphis Classic, Qualification, originally scheduled for July 26, 2026 at 1:…
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.
- 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 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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