Iran agrees to end enrichment of uranium by December 31?

Platform comparison

Market context

Iran would need to make a public commitment to stop uranium enrichment altogether before 31 December 2026, and that is a much higher bar than the partial caps seen in past nuclear talks. Under the JCPOA, Tehran accepted limits on enrichment level, stockpile size, centrifuges and monitoring, but it later breached those limits and resumed higher-grade enrichment after the US withdrawal from the deal.[2][4] That history matters for the current 37% implied probability: the market is not pricing a routine technical concession, but a politically costly reversal on a core part of Iran’s nuclear programme.[2][4]

The closest analogue is the 2025–26 round of US-Iran diplomacy, where the main sticking point has been whether Iran can keep any domestic enrichment at all. Reuters reported on 14 June 2026 that a draft US deal discussed oil-sanctions relief alongside nuclear limits, including a provision for Iran to dilute highly enriched uranium on its own soil under a future comprehensive arrangement.[6] Arms Control Center said the enrichment issue remained the central obstacle in talks, while the IAEA’s 2025 reporting showed Iran’s 60% stockpile had risen sharply, underscoring why any genuine pledge to end enrichment would be market-moving.[4][7]

For traders, the key catalysts are any official Iranian statement, a signed or publicly endorsed framework with the US or regional intermediaries, and any IAEA or UN-related diplomatic timetable that crystallises before year-end. Because settlement is on-chain and paid in USDC, the main crypto link is not the nuclear story itself but the liquidity around event risk: sudden headline risk can widen spreads, move BTC and ETH via broader risk sentiment, and trigger short-lived funding-rate dislocations if the market starts repricing geopolitical tail risk.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reads Iran agrees to end enrichment of uranium by December 31? 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 for comparison. 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

Where can I trade this market with the lowest fees?

On BTC Prediction, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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 BTC Prediction?

Zero. BTC Prediction routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

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.