Proof of presence

AI can fake everything
except yesterday.

CC signet@witnessed.cc on your business emails. Signet verifies the DKIM signature, records who you emailed and when, and discards everything else. Your domain builds a verified communication history — passively, permanently, and impossible to manufacture.

How to start

  1. 1Open any business email you're about to send.
  2. 2Add signet@witnessed.cc to the CC field.
  3. 3Send it. Your seal page appears within minutes.

No account. No signup. No setup. The CC is the product.

What happens after you CC

⚡

Instant seal page

A public page appears at witnessed.cc/b/yourdomain showing your first witnessed date and activity count. Share it anywhere.

🔒

DKIM verified

Every record is backed by a cryptographic DKIM signature from your email domain. Not self-reported. Independently verifiable.

✦

Verified badge at 90 days

After 90 days of consistent activity your domain earns a Verified badge. A scammer can copy the image. They can't copy the history.

Privacy by design. Signet stores sender domain, receiver domain, timestamp, and a DKIM signature hash. Email body, subject line, and all personal content are discarded immediately — never stored, never read. The CC is an explicit, voluntary act on each individual email.