certus.com

Observed Jul 24, 2026, 19:27 UTC (3d ago). Every field below was attested with an Ed25519 signature at scan time. Catalog observation, re-checked on rotation — watch it for 5-minute checks.

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Up right now

Email byMicrosoft 365

Secured byLet's Encrypt

Also usesAtlassianGoogle Search ConsoleZoomSlack1Password

IPv6 · tranco_100k

Every line above is a signed observation. Check the math at the bottom of the page.

No payload stored for this observation.

The proof

Signed at scan time. Check the math yourself. Every line above is part of one signed observation. Re-hash it and check the Ed25519 signature in your own browser; nothing leaves your machine.

Verify this receipt

Put the receipt on your own site. A live badge showing what DomainDrift observes and signs for certus.com. It updates itself. It attests a signed observation - not that the site is safe.

<a href="https://domaindrift.io/t/certus.com">
  <img src="https://domaindrift.io/badge/certus.com.svg"
       width="300" height="64" alt="DomainDrift signed observations for certus.com">
</a>

Ed25519 Receipt

Receipt ID: rcpt_210b2abfb3b741a0
Output Hash: ce75d611bd8db2ca55de6d93b04d92db7ff02a6f2c0a4dc2768f44b20a670417
Signature: ed25519:72b7213660753140e0b09bb39552aba62eb9e44322ec02d3ad49b2025bd77bc2b0b71588d549f8423ce5b3c7df39afba088bef4880a8290acb58f33d984f390b
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

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