Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via BTC Prediction) Pick polygram.ink (preferred broker) |
72% | 28% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open live market → |
Polymarket (direct) polymarket.com |
72% | 28% | 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 | 72% |
| August 14 | 66% |
| July 31 | 59% |
| July 24 | 57% |
| July 18 | 0% |
Market context
The US and Iran have already shown that a pause can be declared quickly, but the key market question is whether Washington can avoid a fresh qualifying strike for a full 14-day stretch. In the 2026 precedent reported by BBC, Axios and CBS, Trump announced a two-week halt to US bombing contingent on Iran keeping the Strait of Hormuz open, and Iran’s leadership said the ceasefire was in force immediately; that kind of conditional wording matters because any new US military action would reset the clock under this contract.[1][2][13]
For traders, the main catalysts are White House, Pentagon and CENTCOM statements, plus any shift in shipping security around Hormuz, because the market’s settlement depends on whether the US takes a qualifying military action rather than on broader rhetoric or diplomacy.[1][13] The previous ceasefire episode also moved oil and equities sharply, with Axios reporting S&P 500 futures up more than 1% and oil down about 6%, so any renewed escalation could feed through to BTC and ETH via risk appetite and macro correlation even if the contract itself settles in USDC.[2] On-chain flows matter too: if conflict headlines trigger broader deleveraging, watch perp funding, basis and exchange spot bids for signs that crypto is pricing in a risk-off move ahead of the settlement window.
Methodology
This page reads US x Iran Effective Ceasefire by 2026? (2 week pause) on-chain. Polymarket's quote comes directly from the Polygon order book — the only comparable venue with on-chain settlement. Kalshi (USD, off-chain), Betfair (GBP/EUR, off-chain) and Manifold (play-money) are listed alongside for venue context. Every CTA routes to BTC Prediction, which mirrors the Polymarket order book directly.
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.
- 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.
- 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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