Seal before you share
Hash-only mode fingerprints your draft without storing the original. Iterate locally, pitch when ready — your proof is already anchored.
DataSeal
Prove your data existed before anyone disputes it.
Proof of origin. Clone-proof. Timestamped. Cryptographic evidence, anchored to the blockchain.
Certificate of Existence
Blockchain-anchored proof
Original file
contract-final.pdf
Proof of origin
HashSHA-256
Clone-proof fingerprint
9f2c4e8b1a73d0c5…e4a81d
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.
Proof modes
Hash, encrypted, or public
Char fingerprint
Standard SHA-256 digest
Client-side option
Hash locally, never upload
Use cases
Real proof for real stakes
From unreleased IP to signed contracts — cryptographic evidence when timing and origin matter.
Protect unreleased ideas
Seal a draft, spec, or script with a hash-only proof before you share it with collaborators, investors, or AI tools.
Why DataSealDocument contracts & agreements
Anchor the exact version of a contract or exhibit at signing time — clone-proof evidence anyone can verify later.
Read a certificateProve authorship of creative work
Timestamp manuscripts, designs, and research notes with a blockchain-backed record of when your bytes existed.
How hashing worksContracts & exhibitsNovels & scriptsProduct specsResearch notesLegal disclosuresPrompt libraries
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 certificate is clone-proof and blockchain-anchored.
Upgrade tiers expand your credit pool and storage headroom for encrypted and public uploads.
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 / month
Up to 500MB / month
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.
Prove it existed.Before the dispute starts.
Create clone-proof, timestamped evidence of origin in minutes. Browser-side cryptography and independent verification — built for creators, teams, and professionals.