🔒 Privacy-first • No account • No file storage

Protect your startup ideas
before you share them.

Before you send a pitch deck, contract, or code snapshot — generate a legally defensible timestamp proving it existed at a precise moment. No account. No file storage. Just proof.

Create a proof now See how it works
👁 Preview the official certificate → (sample)
🗓️ Verifiable UTC timestamp 🧾 PDF certificate (downloadable) 🔗 Shareable verification link 🧠 SHA-256 cryptographic fingerprint
Built for founders, indie hackers, freelancers and builders who ship fast.

Create your proof

$9 one-time
We compute the hash in memory, then discard the file immediately.
One-time payment. Permanent verifiable proof. No subscription.
You get instantly
  • Proof ID you can reference later
  • SHA-256 fingerprint of the exact bytes
  • Public verification page to share
  • PDF certificate to download & archive

See your certificate before you pay

Every proof includes a printable digital certificate with a unique proof ID, SHA-256 fingerprint, and a public verification link.

Create a proof Preview certificate
One-time payment. Instant PDF certificate. No account required.
This is a sample preview. Your certificate will include your file’s fingerprint, timestamp, and proof ID.

Why founders use DocProof

  • Before pitching investors — protect your deck or roadmap
  • Before hiring developers — prove what version of code existed
  • Before signing partnerships — timestamp agreements
  • Before publishing — secure authorship of original work
Step 1

Select your file

Choose any file (PDF, image, doc, zip, code). We fingerprint the exact bytes.

Step 2

Get a timestamp

We create a proof record with a UTC timestamp and your SHA-256 fingerprint.

Step 3

Verify anytime

Share a link. Anyone can verify by re-uploading the original file — no account required.

Privacy guarantee: DocProof never stores your file. Only the cryptographic fingerprint and timestamp required for verification are kept.