Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via PolyGram) Pick polygram.ink (preferred broker) |
86% | 14% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open the market → |
Polymarket (direct) polymarket.com |
86% | 14% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open the market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open the market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open the market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open the market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| July 31 | 86% |
| July 15 | 83% |
| June 15 | 0% |
| June 22 | 0% |
| June 30 | 0% |
| July 7 | 0% |
Market context
The Trump administration has already begun declassifying files on Unidentified Anomalous Phenomena, with the Department of War releasing three tranches of previously unseen records since May 2026 under the PURSUE system[1][2]. The third tranche, published on 12 June 2026, included 72 documents, images, and videos from agencies including the CIA, FBI, NASA, and the Pentagon[3]. Despite this unprecedented transparency, no file has yet offered definitive proof of extraterrestrial life, and NASA’s chief confirmed the agency holds unexplained UAP imagery but no evidence of crashed alien craft[4].
Historically, UAP disclosures have been sporadic and often incomplete, but the current rollout under Trump marks a departure from prior administrations, which never matched this level of rolling declassification[2]. This context explains why the market currently prices the “Yes” outcome at 0%: the condition—declassifying *new* files not previously public—has already been met multiple times before the settlement window closes in June 2026[1][2].
Traders should monitor the Department of War’s rolling release schedule at WAR.GOV/UFO for any future tranches, as well as official announcements from AARO or ODNI regarding new declassifications[2]. While no immediate catalyst has emerged to shift the probability, the ongoing transparency campaign suggests further releases are likely, though none may satisfy the market’s specific “new and unproven” threshold[4]. The on-chain mechanics on Polymarket, using USDC on Polygon and conditional tokens, will resolve automatically once the settlement date arrives, reflecting the factual reality that the condition has already occurred[2].
Methodology
This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to PolyGram, which mirrors the Polymarket order book directly.
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
- Where can I trade this market with the lowest fees?
- Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is PolyGram. 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 Polymarket cost to trade?
- Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.
- 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.
Trade Trump declassifies new UFO files by 2026? on PolyGram
Live order book, 0% fees, USDC settlement in seconds.
Open live market →