Prove youmade it first.
Before you pitch it, send it, or share it. ProofMark creates permanent, tamper-proof proof of your creative work in under 60 seconds. Your file never leaves your device.
You create. They take.
You can't prove a thing.
A screenwriter shares a script with a producer. Six months later, a suspiciously similar movie gets greenlit.
A songwriter demos a hook in a session. It shows up on someone else’s album. No proof who wrote it first.
A founder pitches an idea to investors. The VC passes, then funds a clone three months later.
It happens every day. And the creator almost never wins. Not because they weren't first. Because they can't prove they were first.
ProofMark changes that.
Three steps. Sixty seconds.
No technical expertise needed. Just your file and half a minute.
Drop
Drop your file. ProofMark computes a unique digital fingerprint entirely in your browser. Your content never touches our servers.
Lock
Your fingerprint is sealed with a permanent, tamper-proof timestamp on a public ledger. Immutable. Verifiable. Yours.
Prove
Download your certificate, share a verification link, or embed a badge. Anyone can confirm your proof independently.
Private
Only your file's unique fingerprint is recorded. Your actual content stays private.
Permanent
Once sealed, your proof can't be altered, backdated, or deleted. Ever.
Verifiable
Anyone, anywhere can confirm your proof independently. No ProofMark account needed.
Lock it before...
60 seconds between vulnerability and proof.
The pitch meeting
Your deck, your concept, your strategy. Timestamped before you walk in the room.
The collaboration
You brought the hook. Prove it was yours before the session started.
The query letter
Your manuscript, your synopsis. Proof that predates every submission.
Hitting "send"
Scripts, manuscripts, songs, designs, documents. 60 seconds to permanent proof.
What you receive
Each record is a complete, independently verifiable proof package tied to a specific moment in time.
- Permanent public recordYour fingerprint is sealed on a public ledger. Tamper-proof and independently verifiable by anyone, forever.
- Digital fingerprintA unique identifier that proves your file's integrity without exposing your content.
- Timestamped certificateA downloadable proof document with all record details and verification instructions.
- Verification linkA shareable URL where anyone can confirm your proof. No account needed.
Built on math, not trust.
Your proof doesn't depend on us. It depends on mathematics.
Bank-grade fingerprinting
The same security standard used by banks and governments worldwide to verify data integrity.
Permanent public record
Your proof is written to an immutable public ledger. It can't be altered, deleted, or disputed.
Independent verification
Anyone can verify your proof, anytime, without an account or our involvement.
Your content stays private
Only your file's unique fingerprint is recorded publicly. Your actual content never leaves your hands.
Your next draft
deserves a receipt.
Create your first permanent proof in under 60 seconds. Free. No credit card.
Lock Your First Draft