Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket UK Pick polygram.ink |
0% | 100% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on Polymarket UK → |
Polymarket polymarket.com |
0% | 100% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on Polymarket UK → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on Polymarket UK → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on Polymarket UK → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on Polymarket UK → |
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 Polymarket UK.
Active sub-markets
Market context
The Trump administration's declassification of previously unreleased files on extraterrestrial life or unexplained aerial phenomena by 30 June 2026 is currently priced at 0% YES on Polymarket, meaning conditional YES tokens trade near zero USDC on Polygon whilst NO tokens command the full notional value. This pricing reflects the market's assessment that such a release—distinct from existing public statements or routine Pentagon disclosures—remains an extremely low-probability event within the specified window.
Trump has made public statements about UFO transparency during both his first term and 2024 campaign, yet the actual declassification record tells a different story. The 2017 release of three Navy videos and the 2023 Congressional hearings on unidentified anomalous phenomena occurred without formal executive declassification orders; instead, they emerged through leaks, FOIA litigation, and Congressional pressure. The Pentagon's established All-domain Anomaly Resolution Office, launched in 2022 under the Biden administration, continues operating without releasing substantive classified material on extraterrestrial origins. Historical precedent suggests that even sympathetic administrations face institutional resistance from intelligence agencies reluctant to declassify sensitive surveillance capabilities or admit knowledge gaps.
Traders monitoring this contract should track announcements from the Office of the Director of National Intelligence and Department of Defense regarding declassification reviews, Congressional demands for UFO-related transparency, and any executive orders on classification policy. The 2026 deadline falls within Trump's second term, providing a defined period for action, though no scheduled declassification events currently exist in the public record. Media coverage of UAP incidents or Congressional hearings could shift trader sentiment, but the absence of concrete administrative machinery for such releases keeps conditional YES token liquidity minimal.
Methodology
We track Trump declassifies new UFO files by 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
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
- Where can I trade this market with the lowest fees?
- On Polymarket UK, 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.
- 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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