I Can Prove It.
Timestamp your document with a bitcoin timestamp for independent proof of existence. Keep contents private, then reveal only when you choose.
How It Works
Hash
Your document stays on your device. We only see the fingerprint.
Seal
Encrypt with your passphrase. We never see the contents.
Anchor
Fingerprint is written to Bitcoin. Permanent. Immutable.
What Will You Prove?
Intellectual Property
Prove when you created something. Designs, code, research.
Legal Documents
Contracts, agreements, evidence. A practical alternative to notarization with independent verification.
Business Records
Financial statements, audit trails, compliance snapshots.
Personal Records
Letters, photos, milestones. Prove a document existed at this moment.
What You Get
Sealed bundle — encrypted, delivered by email
Bitcoin transaction — permanent, verifiable
PDF certificate — downloadable proof
Shareable proof link — reveals nothing without passphrase
Offline verification — works without Everstone
Simple Pricing
+ Bitcoin network fee (~$3)
One-time. No subscriptions. No renewals.
Timestamp a document in minutes and keep a verifiable record you can use to prove a document existed, without handing custody of your file to a third party.
Seal a DocumentFAQ
What is a document timestamp?
A document timestamp is cryptographic proof that a specific file fingerprint existed at or before a specific time. It does not expose your file contents.
How does Bitcoin timestamping work?
We hash your file locally in your browser, then anchor only that hash into a Bitcoin transaction (OP_RETURN). Once confirmed, that bitcoin timestamp is permanent and independently verifiable by anyone.
Is this legally admissible?
Legal admissibility varies by jurisdiction and case type. What you always have is independent, tamper-evident proof of existence that can be verified without trusting Everstone.
How is this different from a notary?
A notary relies on appointment time, location, and a central party. This is a decentralized notarization alternative with no middleman and a permanent public ledger record.
Can I timestamp any file?
Yes. You can timestamp documents, images, audio, video, or archives. Hashing happens client-side, so we never need to see your raw file.