Prove It Existed.
Reveal When Ready.
Time-locked cryptographic proof. Verify something existed at a specific timestamp— without revealing what it is until you choose.
No subscription required • Pay per proof • Verify forever
How Sealed Proofs Work
Like a notarized envelope that proves when you sealed it—but nobody can see inside until you open it.
1. Seal Your Content
We hash and encrypt your content. The hash is timestamped with RFC 3161. Nobody—including us—can see what's inside.
2. Share the Proof
Get a verification URL and code. Anyone can verify the timestamp and hash exist—proving something was sealed at that exact time.
3. Unseal When Ready
When you need to prove what was sealed, unseal the content. The hash matches, the timestamp is verified, case closed.
Who Uses Sealed Proofs
Anyone who needs to prove "I knew this" or "I created this" at a specific point in time.
Inventors & Researchers
Establish prior art for inventions before filing patents. Prove you had the idea first.
Legal & Contracts
Timestamp confidential agreements. Prove terms existed at signing time.
Business Strategy
Document trade secrets and strategic plans with verifiable timestamps.
Content Creators
Prove you created content before anyone else—reveal when disputes arise.
Simple Per-Proof Pricing
No subscription required. Pay only for what you use. Volume discounts available.
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Enterprise-Grade Security
Ready to Seal Your First Proof?
No subscription required. Create your first sealed proof in under 2 minutes.
Create Sealed Proof — $25