Seal before you share
Hash-only mode fingerprints your draft without storing the original. Iterate locally, pitch when ready — your proof is already anchored.
Proof of origin. Clone-proof. Timestamped.
Timestamped proof of origin for your data
Create clone-proof, cryptographically verifiable evidence that your files and text existed at a specific moment in time — anchored to the blockchain.
- Trust signal
- Cryptographic proof of origin
- Trust signal
- Clone-proof SHA-256 fingerprints
- Trust signal
- Blockchain-anchored timestamps
- Trust signal
- Independent verification anytime
Certificate of Existence
Live preview
Original file
contract-final.pdf
Proof of origin
HashSHA-256
Clone-proof fingerprint
9f2c4e…a81d
Timestamped
Why DataSeal
Evidence you can trust, verify, and share
Whether protecting intellectual property, documenting contracts, or proving authorship — DataSeal gives you cryptographic certainty in a world where ideas travel faster than ever.
The AI era
Scared AI will steal your idea before you get a chance?
You draft a concept, paste notes into a chatbot to refine them, share a deck with one collaborator — and the window to claim “I had this first” starts closing. Tomorrow someone else ships something similar. A model outputs something eerily close. Without a record, it becomes your word against the internet.
DataSeal doesn't stop copying — nothing can. What it does is give you dated, verifiable proof that your exact bytes existed at a specific moment, before you went wide with them.
Novels & scriptsProduct specsPrompts & research
Prove you were first
A blockchain-backed timestamp is independent evidence of when your exact work existed — not a screenshot, not a gut feeling.
Keep the full idea private
You never have to upload sensitive source material. Only the irreversible hash leaves your control — perfect for unreleased IP.
Don't wait for a dispute. Timestamp your work while it's still only yours.
Seal your idea nowProof of origin
Every file and text payload gets a unique cryptographic fingerprint. Prove you created or possessed the original — not a copy.
Clone-proof evidence
SHA-256 fingerprints are irreversible and tamper-evident. Duplicates cannot forge your proof — only identical bytes match.
Timestamped existence
Anchor when your data existed with blockchain-backed references. Independent verification anytime, anywhere.
Process
How it works
Three steps from original content to cryptographically anchored proof.
1
Capture
Upload your original
Add files, documents, drafts, or text. Your content is fingerprinted locally — proof of origin starts here.
2
Protect
Choose your proof mode
Hash-only for maximum privacy, encrypted for secure storage, or public for open verification.
3
Anchor
Get timestamped evidence
We anchor a clone-proof fingerprint to the blockchain. Independent proof of existence — verifiable forever.
Modes
Proof modes
Same clone-proof backbone — different privacy levels for every payload.
Proof of origin
Hash
Store a clone-proof fingerprint without storing the original. Maximum privacy.
Typical use · IP, contracts & sensitive data
Encrypted vault
Encrypted
Encrypt in your browser before anchoring. Only you hold the decryption key.
Typical use · Privileged documents
Public record
Public
Readable content with timestamped proof. Simple public verification.
Typical use · Disclosures & notices
Workspace
Your proof dashboard
View timestamp certificates, verification status, and clone-proof fingerprints in one place.
contract.pdf
Today
Hash
invoice-text
Yesterday
Encrypted
public-note
2 days ago
Public
Plans
Credit-based pricing
One credit = one timestamped proof of existence.
Each timestamp creates a clone-proof certificate anchored to the blockchain. Upgrade tiers expand your credit pool and storage headroom.
Starter
$10USD
No lock-in contract
50 timestamp credits
Up to 50MB
Perfect for individuals proving origin of key documents and drafts.
Choose StarterPro
Recommended$20USD
No lock-in contract
200 timestamp credits
Up to 200MB
Built for teams needing clone-proof evidence at scale.
Choose ProDeveloper
$35USD
Per month
2,000 timestamp credits
Up to 500MB
Built for developers automating hash-only proof creation via the REST API.Hash-only · REST API included
Choose DeveloperAssurance
Built for verifiable proof
You choose how much data DataSeal.net persists: hash-only fingerprints for proof of origin, client-encrypted payloads for secure vaults, or readable public records. Each pathway creates clone-proof, deterministic evidence you can verify independently — even years later.
Encrypted entries mean your key material is as critical as the content itself — treat backups, secret managers, or HSMs with the same seriousness you would bank credentials or legal exhibits.
Hash mode never requires storing the original file inside DataSeal.net — you retain custody of the authoritative bytes while we anchor an irreversible, clone-proof fingerprint to the ledger.
DataSeal.net reinforces proof of origin and timestamped existence — not legal standing on its own. Pair records with broader policies and counsel when disputes arise.
Ready to prove your data existed?
Create clone-proof, timestamped evidence of origin in minutes. Browser-side cryptography and independent verification — built for creators, teams, and professionals.