Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via BTC Prediction) Pick polygram.ink (preferred broker) |
80% | 20% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open live market → |
Polymarket (direct) polymarket.com |
80% | 20% | 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 | 80% |
| Nashville SC O/U 0.5 | 66% |
| Both Teams to Score in Second Half | 51% |
| 2nd Half O/U 0.5 | 50% |
| 2nd Half O/U 1.5 | 50% |
| 2nd Half O/U 2.5 | 50% |
| Nashville SC 2nd Half O/U 0.5 | 50% |
| Nashville SC 2nd Half O/U 1.5 | 50% |
| Atlanta United FC 2nd Half O/U 0.5 | 50% |
| Atlanta United FC 2nd Half O/U 1.5 | 50% |
| O/U 1.5 | 47% |
| Atlanta United FC O/U 0.5 | 42% |
| Both Teams to Score | 28% |
| Nashville SC O/U 1.5 | 27% |
| O/U 2.5 | 20% |
| Nashville SC (-1.5) | 19% |
| Atlanta United FC O/U 1.5 | 10% |
| Nashville SC O/U 2.5 | 8% |
| O/U 3.5 | 7% |
| Nashville SC (-2.5) | 6% |
| Atlanta United FC (-1.5) | 5% |
| O/U 4.5 | 2% |
| Atlanta United FC (-2.5) | 1% |
| O/U 5.5 | 1% |
| Both Teams to Score in First Half | 1% |
| 1st Half O/U 2.5 | 1% |
| Atlanta United FC O/U 2.5 | 1% |
| Nashville SC 1st Half O/U 0.5 | 1% |
| Nashville SC 1st Half O/U 1.5 | 1% |
| Atlanta United FC 1st Half O/U 0.5 | 1% |
| Atlanta United FC 1st Half O/U 1.5 | 1% |
| 1st Half O/U 0.5 | 0% |
| 1st Half O/U 1.5 | 0% |
Market context
Nashville SC and Atlanta United FC face off in a scheduled MLS match on 17 July at 8:00 PM ET, with the prediction market focusing on ancillary outcomes beyond the final score. The current crowd-implied probability of 19% YES suggests traders view these additional markets as unlikely, despite Nashville’s historical resilience against Atlanta.
Historically, Nashville SC holds a slight edge in this fixture, having won six of the 15 previous meetings compared to Atlanta’s four wins, with five ending in draws[1]. In their most recent encounter, Nashville secured a 2–0 victory over Atlanta, reinforcing their capacity to dominate in high-stakes MLS matchups[2]. This head-to-head record frames the 19% probability as conservative, particularly if the market covers goals, cards, or set-piece outcomes where Nashville has shown consistency.
Traders should monitor pre-match lineups and in-game funding rates on crypto exchanges, as whale flows into BTC or ETH often correlate with speculative shifts in sports prediction liquidity. Any late injury announcements or tactical shifts from either manager could act as immediate catalysts, altering the implied probability before settlement. Recent MLS coverage highlights Atlanta’s defensive vulnerabilities, which may influence secondary markets like total goals or first-half outcomes[3]. Settlement occurs on-chain in USDC, tying the contract’s resolution directly to blockchain mechanics and macro crypto volatility.
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 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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