Prove youmade it first.
Before you pitch it, send it, or share it. ProofMark creates permanent, blockchain-verified proof of your creative work on Avalanche in under 60 seconds.
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 SHA-256 fingerprint and securely stores your work for evidence generation.
Lock
Your fingerprint is registered on the Avalanche blockchain with a permanent, tamper-proof timestamp. 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 cryptographic 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"
Any file, any format, any creative work. 60 seconds to permanent proof.
What you receive
Each record is a complete, independently verifiable proof package tied to a specific moment in time.
- Avalanche blockchain recordYour fingerprint is sealed on the Avalanche C-Chain. Tamper-proof and publicly verifiable on Snowtrace.
- Digital fingerprintA unique hash that proves integrity without exposing your content.
- Timestamped certificateA downloadable proof document with all record metadata and verification instructions.
- Verification linkA shareable URL where anyone can confirm your record independently.
Built on math, not trust.
Your proof doesn't depend on us. It depends on mathematics.
Digital fingerprinting
SHA-256, the same security standard used by banks and governments worldwide.
Registered on Avalanche
Your proof is written to the Avalanche C-Chain. Sub-second finality. Publicly verifiable on Snowtrace.
Independent verification
Anyone can verify your proof, anytime, without an account or our involvement.
Privacy-preserving
Only your file's cryptographic fingerprint goes on-chain. Your actual content stays private and secure.
Your next draft
deserves a receipt.
Create your first permanent proof in under 60 seconds. Free. No credit card.
Lock Your First Draft