Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Prediction Today) Pick polygram.ink (preferred broker) |
85% | 15% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
85% | 15% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| July 31 | 85% |
| July 15 | 79% |
| June 15 | 0% |
| June 22 | 0% |
| June 30 | 0% |
| July 7 | 0% |
Market context
The Trump administration has just released its third tranche of declassified Unidentified Anomalous Phenomena files, yet none contain definitive proof of extraterrestrial life, keeping the market’s implied probability at zero. This latest batch, published on 12 June 2026 by the Department of War under the PURSUE system, includes 72 documents and videos from the CIA, FBI, NASA and Defence, describing spinning discs and glowing orbs but offering no conclusive evidence of alien cover-ups or crashed spacecraft [1][3][4].
Historically, similar transparency drives under previous administrations—such as the 2017 AARO disclosures or the 2023 UAP hearings—also yielded unexplained sightings without confirming non-terrestrial origins, reinforcing why traders treat this market as a “no” until blockbuster proof emerges. Past releases have consistently framed UAP as national security anomalies rather than extraterrestrial contact, a pattern that continues to shape current expectations [2][5][8].
Traders should monitor the Department of War’s rolling release schedule, with tranches expected every few weeks, and watch for any White House or ODNI announcements that might escalate the scope beyond UAP to explicit alien life claims. The latest NBC News report confirms the Pentagon’s commitment to ongoing disclosures, but emphasises that no file has yet resolved the anomaly question [3][4]. Until a document explicitly names extraterrestrial life as the source, the market remains firmly in the “no” zone.
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 Prediction Today, which mirrors the Polymarket order book directly.
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?
- Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Prediction Today. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- Is this market available outside the US?
- Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.
- 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.
- Do I need to KYC for this market?
- On Polymarket directly, no — it's wallet-based. Intermediary brokers like Prediction Today trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
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