Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via BTC Prediction) Pick polygram.ink (preferred broker) |
42% | 58% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open live market → |
Polymarket (direct) polymarket.com |
42% | 58% | 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 |
|---|---|
| August 31 | 42% |
| July 31 | 26% |
| July 15 | 16% |
| June 30 | 0% |
Market context
Iran’s airspace remains partially closed following the recent Iran-Israel war, with western sectors of the Tehran FIR still barred to overflight traffic despite a US-backed ceasefire announcement. This ongoing fragmentation frames the current 26% crowd-implied probability for a general closure: history shows that limited suspensions often escalate into broader bans when regional tensions flare, yet partial reopenings have also occurred without triggering full shutdowns. During the June 2025 conflict, Iran closed its skies entirely for weeks, diverting Malaysia Airlines flights and halting Gulf operations, but by July 2025, commercial travel resumed in major hubs despite continued disruptions.
Traders should monitor upcoming ceasefire compliance announcements from Washington and Tehran, as any Iranian missile retaliation or Israeli strike could instantly reignite full airspace closures. The US Embassy’s July 2, 2025 alert confirmed partial reopening, but current NOTAMs indicate western Tehran FIR sectors remain closed, suggesting fragility in the current arrangement. Watch for funding rate spikes in BTC/ETH futures and whale outflows from USDC pools, which often precede geopolitical shocks; crypto data from Coingecko shows similar volatility patterns during the February 2026 Israeli airspace closures. Exchange spot prices and on-chain USDC settlement volumes will likely reflect market anxiety if new escalations occur before the August 2026 settlement window.
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.
- 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.
- 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.
- 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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