Immutas anchors the cryptographic fingerprint of your images, videos and documents into Kaspa — the fastest proof-of-work ledger on Earth. Your file never leaves your device. Only math touches the chain.
Everything below runs locally in your browser using the Web Crypto API. The SHA-256 fingerprint you see is real — computed from your actual file, on your machine.
Drop any file here or tap to browse
image · video · document · anything
PRIVACY: file is hashed in-browser. nothing is uploaded. we couldn't see your file even if we wanted to.
Anyone holding a file can pull its complete on-chain record — every stamp is a public Kaspa transaction, permanently ordered in time. Below is how a document's audit trail will look.
Your file is hashed with SHA-256 inside your browser. Change one pixel of an image and the entire fingerprint changes. The file itself never travels anywhere.
The fingerprint is embedded in a Kaspa transaction and sealed by proof-of-work in seconds. Every block is a tick of a thermodynamic clock no one can rewind.
Years later, anyone holding the file recomputes its hash and pulls the full audit trail from the chain — proving when it existed and every revision since. No Immutas server required.
When AI can fabricate any image, voice or contract, the question is no longer "does this look real?" — it's "can you prove when it existed?"
Timestamp original photos and footage the moment they're captured. Deepfakes can imitate your content — never its anchor.
Both parties hold the same unbreakable proof of what was signed, and when. Tampering is instantly detectable.
Certificates, degrees and official documents become independently verifiable by anyone, anywhere, forever.
Prove your design, code, research or evidence existed before anyone else claims it. Anteriority, mathematically settled.
"We don't store your files.
We anchor them in time itself — sealed by the energy of the network, verifiable by anyone, owned by no one."
One profile connects every stamp you ever make — searchable, exportable, and always yours.
Universities, enterprises and government bodies get a cryptographic identity on Immutas — so every certificate, contract or record they stamp carries institutional weight anyone can check.
We verify your organization once. After that, every stamp signed by your institutional wallet is publicly attributable to you.
Institutional trust, made portable.
Your stamps display a verified seal linked to your confirmed identity — the difference between "a wallet stamped this" and "this university stamped this."
Anchor thousands of certificates or records in a single operation — one Merkle root, one transaction, every document individually provable.
A branded portal where anyone — employers, regulators, partners — drops a document and instantly checks it against your issued records.
Full audit trails with remarks, signer identities and timestamps — exportable for compliance, or integrated into your own systems via API.
No account needed. Drop any file — its fingerprint is computed locally and checked against the Kaspa BlockDAG. You get the verdict in seconds.
Drop the file to verify or tap to browse
we check the chain, not your file
TIP: in this prototype, verification checks files stamped during this session. stamp a file first, then verify the same file here — then try a different file and watch it fail.