Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via BTC Prediction) Pick polygram.ink (preferred broker) |
94% | 6% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open live market → |
Polymarket (direct) polymarket.com |
94% | 6% | 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 | 94% |
| Spain O/U 0.5 | 81% |
| 2nd Half O/U 0.5 | 78% |
| O/U 1.5 | 77% |
| 1st Half O/U 0.5 | 71% |
| Portugal O/U 0.5 | 66% |
| Spain 2nd Half O/U 0.5 | 60% |
| Both Teams to Score | 55% |
| Spain 1st Half O/U 0.5 | 53% |
| O/U 2.5 | 52% |
| Spain O/U 1.5 | 51% |
| 2nd Half O/U 1.5 | 45% |
| Portugal 2nd Half O/U 0.5 | 44% |
| Portugal 1st Half O/U 0.5 | 37% |
| 1st Half O/U 1.5 | 34% |
| Team to Advance | 34% |
| O/U 3.5 | 30% |
| Portugal O/U 1.5 | 28% |
| Both Teams to Score in Second Half | 28% |
| Spain (-1.5) | 27% |
| Will the Match Go to Extra Time? | 27% |
| Spain 2nd Half O/U 1.5 | 24% |
| Spain O/U 2.5 | 22% |
| Both Teams to Score in First Half | 21% |
| 2nd Half O/U 2.5 | 19% |
| Will the Match Go to a Penalty Shootout? | 18% |
| Spain 1st Half O/U 1.5 | 17% |
| O/U 4.5 | 14% |
| Spain (-2.5) | 12% |
| Portugal 2nd Half O/U 1.5 | 12% |
| 1st Half O/U 2.5 | 11% |
| Portugal O/U 2.5 | 10% |
| Portugal 1st Half O/U 1.5 | 9% |
| Portugal (-1.5) | 8% |
| O/U 5.5 | 7% |
| Spain (-4.5) | 6% |
| Spain (-3.5) | 4% |
| Portugal (-2.5) | 3% |
| O/U 6.5 | 2% |
| Portugal (-3.5) | 1% |
| Spain (-5.5) | 1% |
| O/U 7.5 | 1% |
| O/U 8.5 | 1% |
| Portugal (-4.5) | 0% |
| Portugal (-5.5) | 0% |
Market context
The underlying real-world event is the 2026 FIFA World Cup Round of 16 clash between Portugal and Spain, scheduled for 3:00 PM ET on 6 July at AT&T Stadium in Arlington. This single match determines whether the game will feature more markets, with the crowd currently pricing a YES outcome at just 8%, implying a strong belief that the contest will remain a standard, low-complexity fixture.
Historically, World Cup knockout matches between these neighbours have rarely spawned expanded betting lines unless they featured extraordinary volatility or record-breaking attendance. In the 2018 and 2022 tournaments, similar high-stakes Iberian duels concluded as straightforward 90-minute affairs, with exchanges offering only core markets. The current 8% probability aligns with this precedent, suggesting traders expect a conventional result rather than the chaotic conditions that typically trigger additional market creation.
Key catalysts for traders include the on-chain settlement mechanics tied to USDC and the macro tie-in with BTC/ETH funding rates, which could influence whale flows if the match outcome deviates sharply from expectations. Traders should monitor the official FIFA ticketing system for digital transfer confirmations, as delays might signal operational friction that could impact market depth. Recent coverage from FIFA confirms both teams advanced via decisive wins—Spain’s 3-0 victory over Austria and Portugal’s 2-1 thriller against Croatia—setting a high bar for a standard contest [3]. Any announcement regarding extended play or VAR controversies before the settlement window ending 2026-07-06T19:00:00Z would be the primary trigger for a shift in probability.
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 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.
- 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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