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 |
|---|---|
| O/U 0.5 | 100% |
| O/U 1.5 | 100% |
| O/U 2.5 | 100% |
| O/U 3.5 | 100% |
| O/U 4.5 | 100% |
| O/U 5.5 | 100% |
| Both Teams to Score | 100% |
| Both Teams to Score in First Half | 100% |
| 1st Half O/U 0.5 | 100% |
| 1st Half O/U 1.5 | 100% |
| St Johnstone FC O/U 0.5 | 100% |
| St Johnstone FC O/U 1.5 | 100% |
| Kilmarnock FC O/U 0.5 | 100% |
| Kilmarnock FC O/U 2.5 | 100% |
| St Johnstone FC 1st Half O/U 0.5 | 100% |
| Kilmarnock FC 1st Half O/U 0.5 | 100% |
| Both Teams to Score in Second Half | 100% |
| 2nd Half O/U 1.5 | 100% |
| 2nd Half O/U 2.5 | 100% |
| St Johnstone FC 2nd Half O/U 0.5 | 100% |
| Kilmarnock FC 2nd Half O/U 1.5 | 100% |
| 2nd Half O/U 0.5 | 99% |
| St Johnstone FC 2nd Half O/U 1.5 | 99% |
| Kilmarnock FC 2nd Half O/U 0.5 | 99% |
| St Johnstone FC O/U 2.5 | 50% |
| Kilmarnock FC O/U 1.5 | 50% |
| St Johnstone FC (-1.5) | 44% |
| St Johnstone FC (-2.5) | 25% |
| Kilmarnock FC (-1.5) | 1% |
| Kilmarnock FC (-2.5) | 1% |
| 1st Half O/U 2.5 | 1% |
| St Johnstone FC 1st Half O/U 1.5 | 1% |
| Kilmarnock FC 1st Half O/U 1.5 | 1% |
Market context
St Johnstone’s meeting with Kilmarnock is the real-world event behind this market, and the 44% crowd-implied YES price points to a near-even read rather than a strong lean. Head-to-head data is mixed but usable as a framing device: FootyStats lists 39 meetings with St Johnstone ahead 19-15, while ESPN’s recent game log shows Kilmarnock winning the latest league meeting 3-1 in February 2025 and St Johnstone taking the previous two home-and-away matches in late 2024.[6][12][14]
That kind of split history matters because “more markets” contracts often settle on whether a specific in-game or event-linked condition is triggered, so traders usually care less about the name on the fixture and more about pace, volatility and late information flow. Recent form has also tilted in different directions across sources: Sky Sports and ESPN show Kilmarnock ending last season with a run of wins, while St Johnstone’s 2025-26 Championship run was strong enough to include several multi-goal victories before promotion.[4][7] In on-chain terms, the practical issue is USDC settlement: any sharp move in the underlying event must be reflected before the 2026-08-02T13:00:00Z window closes, otherwise the market can stay anchored by earlier crowd pricing even if live consensus shifts.
For catalysts, the main watchpoints are official line-ups, late injury news, and any schedule disruption around the Scottish Premiership kickoff, because these can move the expected match state faster than broader BTC or ETH conditions. If the market is being repriced on-chain, traders should also watch whether liquidity clusters or whale-sized fills appear near the current 44% level, since concentrated orders can keep the implied probability pinned even when exchange sentiment changes.
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 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.
- 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.
- 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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