Built on Shelby Protocol + Aptos Blockchain

You made it first.
Prove it.

Cryptographic proof of original content — anchored onchain, verifiable by anyone, forever.

Prove Ownership Now

How it works

Four steps. Permanent proof.

🔐01

Hash

SHA-256 fingerprint computed locally — your file never leaves your browser

🗄️02

Store

Hash stored on Shelby's verifiable hot-storage network

⛓️03

Anchor

Proof anchored onchain to Aptos — tamper-proof and permanent

🔗04

Share

Get a public verify link — anyone can confirm authenticity instantly

Start now

Drop your file. Get your proof.

Any file type. Up to 100MB. Free during testnet.

Why OriginMark

Built different.

🔒

Tamper-Proof

Your file's SHA-256 fingerprint is stored on Shelby. Any single bit of modification produces a completely different hash — making fraud cryptographically impossible.

Cryptographic security
⚡

Instant Certification

Upload in seconds. Your proof is live before you close the tab. No waiting for block confirmations — Shelby's hot storage is built for speed.

Sub-second uploads
🌐

Verify Without Trust

Share a link. Anyone — anywhere — can verify your content without an account, without trusting us, and without any central authority.

Trustless verification

Who needs OriginMark?

If you create, you need proof.

🎨
AI Artists
Prove your generations are original
⌨️
Developers
Timestamp your code and releases
🔬
Researchers
Certify dataset provenance
✍️
Writers
Protect your content from theft