sfn.org

Observed Jul 24, 2026, 19:46 UTC (2d 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 byHubSpot

Secured byGoDaddy.com

Also usesAtlassian

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 sfn.org. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_45d24905d1c19cad
Output Hash: 7c62f8c08a4c3ba7b21365c4595b98e42d7846d1e50a32d225b36a9ceba4e3e0
Signature: ed25519:3410e7264e64d1b134d216492d36d126059dac63ba26e6d2fe8b0a846f4283009c9d3aaea1a7fa89dd2271746c94d7f992d278989a5ce23d2ab47993af7fd707
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

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Permalink: https://domaindrift.io/t/sfn.org