Who will attend US-Iran signing ceremony?

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Market context

The US and Iran announced a written diplomatic agreement on 14 June 2026, with a signing ceremony scheduled for 19 June. The market resolves positively if a specified individual attends any official signing event between the two nations by 7 July 2026. The 28% implied probability reflects substantial uncertainty about whether this particular attendee will be present at the ceremony, despite the agreement's announcement and scheduled date.

Historical precedent suggests high-level US-Iran diplomatic events rarely proceed without complications. The 2015 Joint Comprehensive Plan of Action (JCPOA) signing involved multiple rounds of negotiations and last-minute scheduling adjustments before the final ceremony occurred in Vienna. Attendance at such events depends on several variables: the political standing of the designated individual within their respective government, domestic political pressures, and whether the agreement survives the interval between announcement and execution. Previous US-Iran agreements have occasionally seen lower-ranking officials substitute for initially expected attendees when political sensitivities shifted.

Key catalysts to monitor include any official statements from either government confirming or denying the attendee's participation, changes to the ceremony date or location, and broader diplomatic developments that could destabilise the agreement before 19 June. News reports from established diplomatic correspondents covering US-Iran relations will likely provide early signals if attendance plans shift. The compressed timeline between announcement and ceremony—just five days—limits opportunity for last-minute renegotiation, though geopolitical events can alter diplomatic schedules rapidly. Any public statements from the individual in question regarding their availability would materially affect the resolution outcome.

Methodology

This page reviews Who will attend US-Iran signing ceremony? across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at Sport Prediction — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

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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.

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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.