Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via BTC Prediction) Pick polygram.ink (preferred broker) |
59% | 41% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open live market → |
Polymarket (direct) polymarket.com |
59% | 41% | 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 |
|---|---|
| Sabrina Ionescu: Rebounds O/U 3.5 | 59% |
| O/U 178.5 | 57% |
| Sabrina Ionescu: Assists O/U 4.5 | 57% |
| A'ja Wilson: Rebounds O/U 9.5 | 55% |
| Jonquel Jones: Rebounds O/U 8.5 | 55% |
| Chelsea Gray: Assists O/U 6.5 | 55% |
| Breanna Stewart: Rebounds O/U 7.5 | 55% |
| Spread -3.5 | 54% |
| A'ja Wilson: Points O/U 25.5 | 52% |
| Jackie Young: Points O/U 17.5 | 52% |
| Chelsea Gray: Points O/U 11.5 | 52% |
| Jackie Young: Assists O/U 6.5 | 52% |
| Jackie Young: Points O/U 18.5 | 52% |
| Breanna Stewart: Points O/U 20.5 | 51% |
| Sabrina Ionescu: Points O/U 18.5 | 51% |
| Chelsea Gray: Rebounds O/U 2.5 | 51% |
| Jonquel Jones: Points O/U 13.5 | 50% |
| O/U 181.5 | 50% |
| Sabrina Ionescu: Rebounds O/U 4.5 | 49% |
| Spread -4.5 | 49% |
| O/U 182.5 | 47% |
| Spread -5.5 | 46% |
| Jonquel Jones: Assists O/U 2.5 | 45% |
| A'ja Wilson: Assists O/U 3.5 | 44% |
| Jackie Young: Rebounds O/U 4.5 | 43% |
| Breanna Stewart: Assists O/U 3.5 | 43% |
| Chelsea Gray: Rebounds O/U 3.5 | 43% |
| Breanna Stewart: Rebounds O/U 8.5 | 42% |
| Sabrina Ionescu: Assists O/U 5.5 | 42% |
| New York Liberty vs. Las Vegas Aces | 37% |
Market context
Traders on decentralised prediction markets give 59% probability to new york liberty vs. las vegas aces. In the upcoming WNBA game, scheduled for July 30 at 10:00PM ET: If the New York Liberty win, the market will resolve to "New York Liberty". If the Las Vegas Aces win, the market will resolve to "Las V…
Live Data & Statistics
Live stats load when the match begins. Current market odds are shown above. Trading volume: $105K.
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.
- 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.
- 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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