Soleau seals any document with a cryptographic timestamp anchored to the Bitcoin blockchain. Permanent. Independently verifiable. The neutral record that exists before anyone asks for it.
Any document — PDF, image, code, audio, video. Your file never leaves your device. Only its cryptographic fingerprint is transmitted.
Soleau generates a SHA-256 hash and anchors it to Bitcoin via OpenTimestamps. The timestamp is server-generated — backdating is impossible.
A PDF certificate with your hash, timestamp, identity, and a public verification URL. Add a witness for an extra layer — counterparty confirmation on the record.
Even if Soleau shuts down, your stamp is anchored in Bitcoin. Any Bitcoin node can verify it. The proof belongs to you, not to us.
If Alice stamps a document at 9am and Bob stamps the same document at 11am — Alice wins. The first stamp of any hash owns it, permanently. No appeal, no override. This is the single most important anti-fraud mechanism in the system.
The problem: Client says the final files were never delivered, or claims you sent something different.
The fix: Stamp your deliverables before sending. The hash proves exactly what you sent and when. Their claim becomes untenable.
The problem: Company uses your proposal or strategy without hiring you — and denies ever receiving it.
The fix: Stamp your proposal before you send it. The timestamp predates any implementation. Prior stamp wins.
The problem: Your article pitch, manuscript, or story concept appears under someone else's byline.
The fix: Stamp every draft. The SHA-256 hash of your earliest version is permanent proof of creation.
The problem: A melody, lyric, or beat you shared ends up on someone else's release.
The fix: Stamp your DAW export and stems. The timestamp on Bitcoin predates any release date.
The problem: A technical architecture, algorithm, or codebase you designed is claimed by someone else.
The fix: Stamp a git log export alongside your source. Two layers of timestamp, neither alterable.
The problem: A contract, agreement, or term sheet is disputed — each party claims a different version.
The fix: Stamp every version before it circulates. The hash identifies the exact document. No ambiguity.
Before you send. After you deliver. When a dispute begins. These are the moments DocuSign doesn't touch — and the moments that matter most when something goes wrong.
They're complementary. A document stamped on Soleau before going to DocuSign is stronger than either alone.
Proof that your document existed at this exact moment.
Add counterparty confirmation — proof they received it.
Bulk stamps, API access, team accounts, audit logs.
The best time to timestamp a document is before a dispute exists. The second best time is right now.
Seal your first document — freeNo subscription. No credit card. Sealed tier is free forever.