Provenance, witnessed · est. 2026

We don't own it.
We don't train on it.
We witness it.

Cryptographic proof your work existed — on this date, in this form. Free to witness. Verification is free forever, for anyone — even without us. Optional paid tiers coming soon.

Witness my work See how it works
EIGENWITNESS · RECEIPT ◦ WITNESSED ◦
Witnessed2026-06-27 14:08:51 UTC
Receipt IDew_5f2a91c0d7b3e8
Content hashsha256:a3f7b2c9e1…6d4f
Content hash·nsha256:8b1e44f0…c2a7
TimestampRFC 3161 certified ✓
Self-verifytable carried in record ✓
EigenWitness witnessed that content matching this hash was submitted on this date, in this form. We do not own it. We do not train on it. We witnessed it.
01The problem

Your work gets absorbed. Copied. Fed to models without credit. You made it — you should be able to prove it existed before they took it.

02How it works

Paste your work. Get a witness. Keep everything else.

01

You submit

Paste your text — a paragraph or a 900-page archive, it handles both. Nothing fancy to learn.

02

We hash and timestamp

A cryptographic fingerprint of your exact content, sealed against a certified third-party time server. The content stays yours — we keep the proof, not the work.

03

You get a receipt

A formal record — downloadable, emailed, optionally mailed to you on paper with a tracked postmark. Verifiable by anyone holding the hash.

04

It verifies itself — forever

The receipt carries everything needed to check it. No blockchain needed. No login. No dependence on us. If EigenWitness vanished tomorrow, your proof would still stand.

◦

the characteristic signature of your words

03The whole promise

A witness testifies to what it saw. Nothing more, nothing less.

We witness that your content was submitted, on a date, in a form. We don't claim who made it first, who owns it, or whether it's original — and that honesty is exactly what makes the record trustworthy.

What we do

  • ✓Fingerprint your exact content
  • ✓Timestamp it, third-party certified
  • ✓Issue a receipt you can verify anywhere
  • ✓Cooperate with lawful legal process

What we never do

  • ✗Own your work
  • ✗Train AI models on it
  • ✗Sell or share it
  • ✗Pretend to be your lawyer
04Why it's different

Not another certificate. A record that stands on its own.

No blockchain required
No ledger to depend on, no chain to keep alive. Plain, durable cryptography — the approach the major standards bodies moved toward, without the baggage.
Verifies offline
The record carries its own key. Check it on your own machine, in three years, with nothing from us. Other systems' proofs get stripped in transit — yours doesn't.
More than a hash
Optionally, a semantic fingerprint of what your work contains — far harder to fake retroactively than a timestamp alone. This is the part no one else has.
A paper trail, literally
A tracked, postmarked envelope on request. Courts have honored postmarks for a century — old-fashioned, and quietly powerful.
05What it costs

The witness is free. The intelligence is the upgrade.

Witnessing your work shouldn't cost anything — it's a right, not a feature. We earn our keep on the deeper analysis, for those who want it.

WITNESS
free

The record, on us

Cryptographic hash, certified timestamp, and a self-verifying receipt. Everything you need to prove your work existed. Free, and always will be at the base.


paid

What your work contains

The full semantic analysis — the distinctive vocabulary, the structure, the fingerprint of meaning that makes a convincing forgery far harder to produce after the fact. Priced by size; a whole body of work in one pass.

+ paper delivery · tracked postmark · small add-on

bulk

For a lifetime of work

Hundreds of pieces, witnessed and reported in a single motion. For writers, researchers, and archives with a real body of work to protect.

Prices set at launch — waitlist members lock founding rates. Pay only for the analysis you choose; the witness itself stays free.

Be among the first

EigenWitness opens soon. Get in line.

We're building carefully, in the open. Join the waitlist and you're first through the door.

  • → First access when we open
  • → Founding rates, locked for good
  • → Your first full report, on us

No spam. We don't train on your email either.