Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
PolyGram Pick polygram.ink |
4% | 96% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on PolyGram → |
Polymarket polymarket.com |
4% | 96% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on PolyGram → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on PolyGram → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on PolyGram → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on PolyGram → |
Live odds for Polymarket-based markets come from the Polygon order book. Non-Polymarket venues show attributes only; clicking any row opens the market on PolyGram.
Active sub-markets
Market context
Iran has recently struck a commercial cargo ship in the Strait of Hormuz, marking a sharp escalation in maritime tensions that directly frames the 4% YES probability on this Polymarket contract. The market resolves to "Yes" only if Iranian forces explicitly claim a kinetic strike on or seizure of a commercial vessel, excluding proxy actions by Hezbollah or Houthis. This distinction is critical for on-chain traders holding conditional tokens on the Polygon network, where USDC settlements hinge on verified state attribution rather than ambiguous battlefield reports.
Historically, anti-shipping campaigns during the Iran-Iraq War, known as the Tanker War, saw Iraq attack vessels to weaken Iran’s war effort, yet those were state-led operations distinct from current proxy dynamics [1]. The 2026 Strait of Hormuz crisis has already seen Iran block shipping traffic since February, with recent US strikes on Iranian targets following a confirmed attack on a Singapore-flagged commercial vessel [5][6]. These precedents suggest that while kinetic strikes occur, the 4% market price likely reflects the high threshold for official Iranian state attribution required for resolution.
Traders should monitor official announcements from the Islamic Republic of Iran and US Central Command reports confirming drone or missile origins from Iranian territory [3]. The settlement window ends 9 July 2026, so upcoming UN-backed shipping lane schedules and any new cargo ship incidents in the Strait will be immediate catalysts [2]. Recent Reuters coverage confirms the US has already retaliated against Iranian forces for commercial shipping aggression, making future state-claimed strikes a plausible but low-probability event under current ceasefire constraints [5].
Methodology
We track Pronóstico: Iran successfully targets shipping on 2026? on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.
Resolution & payout
Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.
Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.
FAQ
- How does resolution work?
- Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.
- What's the difference between YES and NO shares?
- A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.
- What does it cost to trade on PolyGram?
- Zero. PolyGram routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.
- How fast are USDC deposits?
- Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.
- How reliable are the quoted odds?
- The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.
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