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Will the US confirm that aliens exist by 2027?

"Will the US confirm that aliens exist by 2027?" on Polymarket, Kalshi and Polymarket Legal UK — what traders need to know about platform choice, KYC and tax law.

December 31 6% September 30 4% April 30 0% June 30 0% Volume: $61.4M Liquidity: $1.3M Closes: 31 Dec 2026
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Will the US confirm that aliens exist by 2027?

Platform comparison

PlatformYES oddsNO oddsFeeKYCSettlement
Polymarket (via Polymarket Legal UK) Pick
polygram.ink (preferred broker)
6% 94% 0% (USDC on-chain) No-KYC up to $1,500 USDC, auto via UMA oracle Trade this market →
Polymarket (direct)
polymarket.com
6% 94% 0% Geo-blocked in US/UK/EU USDC, on-chain Trade this market →
Kalshi
kalshi.com
Up to 7% per trade US-only, KYC required USD Trade this market →
Betfair Exchange
betfair.com
2-5% commission Full KYC from first trade GBP / EUR Trade this market →
Manifold Markets
manifold.markets
Play-money (mana) None — play-money Mana (no cash-out) Trade this market →

Outcome probabilities

Current market-implied probability for each outcome, from the live order book.

OutcomeProbability
December 316%
September 304%
April 300%
June 300%
May 310%
March 310%

Market context

The underlying real-world event is the US government’s ongoing, high-profile investigation into unidentified anomalous phenomena, which has recently intensified with the White House establishing a dedicated UAP Science Advisory Council led by Harvard astronomer Avi Loeb. Despite this institutional focus, no official body has yet definitively confirmed extraterrestrial life or technology, leaving the market’s crowd-implied probability at 0% YES.

Historically, comparable cases such as the 2026 release of the PURSUE UFO files under President Trump and the 2023 congressional testimony by former intelligence officer David Grusch have failed to yield conclusive proof. The PURSUE release explicitly stated the documents contained unresolved cases with no evidence of alien origins, while the Pentagon dismissed Grusch’s claims of recovered non-human biologics as unsubstantiated. These precedents frame the current 0% probability as a rational reflection of the absence of any verified confirmation to date.

Traders should monitor scheduled announcements from the UAP Science Advisory Council, particularly its forthcoming website launch and peer-reviewed publications, alongside further tranches of the PURSUE files, with the third tranche released on 12 June 2026 already indicating continued processing of new documents. Recent reporting from Scientific American confirms the council’s primary duty is to relay findings to senior intelligence officials, not to issue public confirmations, suggesting any definitive statement remains unlikely before the 31 December 2026 settlement window. For market accessibility, German GlüStV implications and US CFTC reach mean that ‘no-KYC up to $1,500’ allows traders to participate without identity verification, though regulatory scrutiny may increase if official confirmation ever occurs.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This overview of Will the US confirm that aliens exist by 2027? reviews the four comparable platforms from a regulatory perspective: which is accessible in your jurisdiction, where KYC kicks in, how the platform is classified by your country of residence. Live probability is the Polymarket mid; comparison columns show regulatory status, KYC thresholds and settlement options for each platform.

Resolution & payout

On Polymarket, resolution runs on-chain via UMA Optimistic Oracle. USDC payout is instant and automatic, with no KYC. Tax treatment depends on your jurisdiction — in the US, gains are usually ordinary income; in the UK, often capital gains. Consult a tax professional for your situation.

FAQ

Is Polymarket legal in my country?
Polymarket is geo-blocked in the US/UK/EU. Actual usage via the Polymarket interface is not possible there. The legal status itself varies — many countries treat prediction markets as a gray area. Polymarket Legal UK has a different geo footprint.
Do I need to KYC for Polymarket Legal UK?
Not for lifetime trading volume under $1,500. Above that threshold, a quick KYC flow kicks in — ID, selfie, approximately 5-10 minutes. The threshold matches FATF travel standards for unregulated crypto platforms.
Are prediction markets gambling?
Legally unclear in most jurisdictions. Some interpretations classify them as wagering (gambling regulation applies), others as derivatives (financial regulation applies). There's no global precedent specifically for on-chain prediction markets.
Is there a withdrawal cap?
No platform-side cap. You can withdraw any amount provided KYC is complete. SEPA bank withdrawals over €15,000 trigger additional anti-money-laundering checks (statutory obligation for all platforms).
What if regulation changes?
If regulation changes in your jurisdiction (e.g. prediction markets are banned), Polymarket Legal UK would geo-block the affected region and continue processing withdrawals. Your funds remain withdrawable at any time.
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Trade Will the US confirm that aliens exist by 2027? on Polymarket Legal UK

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