docuProof on Product Hunt

When anyone can claim anything is fake — how do you prove what's real?

docuProof creates a permanent, blockchain-anchored timestamp for any file in 60 seconds. It can never be faked, altered, or destroyed — not by us, not by anyone.

Your file never leaves your device. Only a unique numeric code is recorded. The proof lives forever. $2.89.

Not sure you need this? See 9 real scenarios where a $2.89 timestamp could save you thousands →

Your Certificate

✓

docuProof Certificate

Anchored to an immutable blockchain. Cryptographic proof that can't be disputed, altered, or faked. Independently verifiable forever.

✓ Court-ready PDF ✓ QR verification ✓ Blockchain anchor
docuProof Certificate of Proof of Existence

The world runs on trust. But trust is fragile.

AI can generate fake documents in seconds. Screenshots can be manipulated. Emails can be spoofed. Cloud providers go offline. When disputes arise, "I had it first" means nothing without proof.

docuProof gives you cryptographic evidence anchored to the most secure, decentralized ledger ever created—the blockchain. Not stored on our servers. Not dependent on us existing. Just math and the blockchain.

60s
To generate proof
Forever
Proof lasts
🤖
AI-Generated Fakes
Documents, images, and contracts fabricated in seconds
💨
Platforms Disappear
Startups fail. Services shut down. Data vanishes.
⚡
Disputed Ownership
"I created it first" means nothing without proof
🔥
Lost Evidence
Paper burns. Drives fail. Backups get corrupted.

How docuProof Works

Four simple steps. Under 60 seconds. Permanent proof.

1

Select Your File

Choose any file. It never leaves your device — only a unique numeric code is generated.

2

Create Hash

Your browser generates a unique SHA-256 hash — a one-way mathematical code derived from your file.

3

Anchor to Blockchain

The code is permanently recorded on the blockchain's immutable ledger.

4

Get Your Certificate

Receive a verifiable PDF certificate with your proof ID and verification link.

Who Uses docuProof

✍️

Freelancers & Contractors

Timestamp contracts and deliverables before sending to clients. Prove what you delivered and when.

🎨

Creatives & Artists

Protect manuscripts, scripts, songs, artwork, and designs before pitching or publishing.

🔬

Researchers & Academics

Establish priority for discoveries, datasets, and thesis work with immutable timestamps.

⚖️

Legal & Business

Create tamper-proof records for contracts, NDAs, compliance documents, and evidence.

Simple, Transparent Pricing

No hidden fees. No subscriptions required. Pay per proof or save with a plan.

Single Proof

Perfect for occasional use

$2.89 per proof

 

  • One document, one proof
  • blockchain anchor
  • Instant PDF certificate
  • Permanent verification link
  • Email confirmation
Generate Proof

Starter Plan

Up to 30 proofs / month

$9.75 / mo

or $99 / year (save 15%)

  • 30 proofs per month
  • All single proof features
  • Priority support
Start Monthly Start Annual

Pro Plan

Up to 150 proofs / month

$29.75 / mo

or $303 / year (save 15%)

  • 150 proofs per month
  • All starter features
  • Dedicated support
Go Pro Monthly Go Pro Annual

Frequently Asked Questions

Why would an everyday person need this?⌄
You'd be surprised how often "prove it" comes up in everyday life. Landlords disputing move-in photos. Contractors blaming you for damage they caused. Insurance companies claiming your policy "changed." Family members fighting over a will. A $2.89 timestamp today can save you thousands in disputes tomorrow. See 9 real scenarios where proof saves the day →
Is this a legal notary service?⌄
No. docuProof creates cryptographic proof-of-existence, not legal notarization. It provides mathematical evidence that your file existed at a specific time and hasn't changed since—evidence that can support legal claims but doesn't replace formal notarization where required.
Does my file get uploaded anywhere?⌄
No. Your file never leaves your device. We hash it locally in your browser and only submit the 64-character SHA-256 hash — a unique cryptographic code derived from your file. Your document's contents remain completely private — we never see them.
What exactly gets stored on the blockchain?⌄
Only your file's cryptographic hash — a unique 64-character code derived from your file. This hash cannot be reversed to reconstruct your file — it's a one-way mathematical function. Think of it as a unique digital seal that proves the file existed.
How long does blockchain anchoring take?⌄
Blockchain anchoring typically completes within 1–4 hours as transactions are batched for efficiency. You'll immediately receive a receipt with your hash and Proof ID by email. Once anchoring is confirmed, you'll receive a second email with your Certificate of Proof, including the blockchain block address. If you added RIP (Redundant Identity Preservation), the certificate will include your RIP verification as well.
What should I save after generating a proof?⌄
Keep two things: (1) Your original file, unchanged, and (2) The PDF certificate you receive. Together, these allow anyone to independently verify your proof at any time—even if docuProof disappears.
Can I verify my proof without docuProof?⌄
Yes. Your certificate contains everything needed for independent verification using the OpenTimestamps protocol. docuProof is not a single point of failure—the proof exists on the blockchain regardless of our service.
Why the Bitcoin blockchain instead of others?⌄
The Bitcoin blockchain is the most secure, decentralized, and time-tested blockchain in existence. It's been running continuously since 2009 and has the highest hashrate of any blockchain, making it virtually impossible to tamper with historical records.
What happens if I lose my original file?⌄
Without your original file, you can't prove your claim—the timestamp only proves some file existed. After checkout, we offer RIP (Redundant Identity Preservation) to verify your backup copies match your original, protecting you if one copy is lost.
What can accidentally change my file?⌄
Opening and re-saving, re-exporting, or software updating metadata—even without visible changes. Renaming is safe (it doesn't change contents). Best practice: make backup copies right after timestamping and don't open them.
How reliable is the file verification?⌄
We use SHA-256—the same algorithm securing the blockchain and banking systems. Matching hashes means files are mathematically identical, bit for bit. It's not an estimate; it's cryptographic certainty.
Is docuProof only for businesses?⌄
Not at all. Homeowners and families use docuProof just as much—rental move-in photos, contractor quotes, home inventory for insurance, car condition before lending, even custody agreements. A $2.89 timestamp can save thousands in disputes. See 10 things smart individuals timestamp →
What documents should I timestamp?⌄
Anything where proving "when it existed" might matter later. For businesses: contracts, approvals, quotes, NDAs, creative work. For individuals: rental photos, contractor agreements, valuables documentation, receipts. Business use cases → · Personal use cases →
What is a cryptographic hash, and how is it connected to the Proof ID?⌄
A cryptographic hash is a unique 64-character code generated from your file using SHA-256 — the same algorithm securing the blockchain and banking systems. If even a single byte of your file changes, the hash changes entirely. The hash proves your file is authentic (unchanged), while the Proof ID helps you find and share your proof quickly.

🔒 Your file never leaves your device — only the hash is ever transmitted.
✨ No account needed

See It In Action

Pick any option below to instantly timestamp a file on the blockchain — free, no sign-up required.

🔒 Your file never leaves your device — only a unique numeric code is recorded.

Ready to create unfakeable proof?

Secure your work in under 60 seconds. No account required.

Generate Proof →Verify Existing Proof