Make claims. Seal cryptographically. Reveal on schedule.
Write a claim, seal it with a SHA-256 hash, and choose when to reveal it. The hash proves your claim existed before the reveal — no edits, no cheating.
Sealed is now in open beta. Sign up and start sealing.
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Sign InHow it works
Make a prediction about anything — markets, politics, technology, sports. Say what you believe will happen and when.
Your text is instantly hashed into a unique cryptographic fingerprint. This hash is published immediately — proof your claim existed at this exact moment.
The original text is encrypted with AES-256-GCM and locked until your chosen reveal date.
When your date arrives, the claim is decrypted and published. Anyone can re-hash the text to verify it hasn't been altered since sealing.
Three independent AI models search the web and evaluate your claim against real-world evidence. Each returns a verdict with sources.
The community weighs in. Claims that reach 80% agreement earn “Called It” status — building your forecasting track record.
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