🔒 Pay once — your proof is permanent

One file. One proof. $9.

You're about to send that pitch deck. Without a timestamp, you have no proof it existed before the meeting. That's exactly what DocProof is for.

✅ No account required ✅ No subscription ever ✅ Certificate in ~30 seconds

Free — forever

$0

No credit card. No account.

✅ SHA-256 fingerprint any file
✅ Compare two files for tampering
✅ Verify any existing DocProof by ID
✗ Timestamped proof record
✗ Downloadable PDF certificate
✗ Shareable verification link

Use free tools →

Always free. No catch.

⭐ Most popular

One-time payment

$9

CAD / proof

Pay once. Proof is permanent. Forever.

✅ Everything in Free
✅ Cryptographic SHA-256 proof + UTC timestamp
✅ PDF certificate — downloadable, printable, archivable
✅ Public verification link — anyone can verify, no account
✅ Certificate emailed to you (optional)
✅ Permanent storage — no expiry unless you want one
✅ GDPR deletion at any time

Protect this file — $9 →

💳 Stripe • No subscription • No account needed

Pro Plan

$12

CAD / month

For anyone who proofs documents regularly.

✅ Everything in the $9 plan
✅ 5 proofs included per month
✅ Dashboard with full proof history
✅ Re-download any certificate anytime
✅ Priority support
✅ Cancel anytime

Upgrade to Pro →

Secured by Stripe • Cancel anytime

API / Developer

Need to integrate DocProof into your app?

Full REST API with API key authentication. Create proofs, retrieve metadata, and delete records programmatically. Custom monthly quotas based on your volume. Read the docs

🔐 Your file is never stored — only the SHA-256 hash 🧾 PDF certificate ready in ~30 seconds 🌐 Anyone can verify your proof — no account needed 🗑️ Delete your data anytime (GDPR)

When do people actually use DocProof?

📤

Before pitching investors Prove your deck existed before the meeting

🤝

Before signing contracts Lock in the exact version both parties agreed to

💻

Before shipping code Snapshot your codebase before you go public

✍️

Before publishing Prove authorship of designs, writing, or research

Questions & answers

Do you store my file?

Never. Your file is hashed in memory the instant you upload it, then discarded completely. We only keep the SHA-256 fingerprint, filename, size, and UTC timestamp. It is mathematically impossible for us to reconstruct your file.

Is the $9 a subscription?

No. It's a one-time payment per proof. You pay $9, you get a permanent certificate. No renewals. No hidden fees. No account to manage. Ever.

What happens right after I pay?

In about 30 seconds you get: a unique Proof ID, your SHA-256 fingerprint, a public shareable verification link, and a downloadable PDF certificate. If you entered your email, the certificate is also sent there instantly.

Is this legally admissible?

A DocProof certificate is strong cryptographic evidence that a document existed at a specific moment. Hash-based timestamping is widely recognized. That said, legal weight depends on your jurisdiction — for high-stakes proceedings, consult a lawyer.

How is this better than emailing myself the file?

Email timestamps can be forged or disputed. A DocProof certificate is tamper-evident: any change to the file — even one character — produces a completely different SHA-256 hash, making forgery mathematically detectable.

What file types and sizes work?

Any file up to 25 MB: PDF, Word, Excel, ZIP, code, images, video. If it's a file, we can fingerprint it.

Can I delete my proof later?

Yes. Use the data deletion tool to permanently remove your proof and all metadata, any time, no questions asked.

Do I need an account?

No account, ever. Pay via Stripe, get your proof. Save your Proof ID. That's the whole flow. We built DocProof with zero-friction as a hard requirement.

Your work deserves proof.

No account. No subscription. Upload your file, pay $9, get a permanent cryptographic certificate in 30 seconds.

Create your first proof — $9 →

💳 Secured by Stripe • 🔒 File never stored • 🧾 PDF certificate in ~30s