rubycon.co.jp

Observed Jul 25, 2026, 15:24 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.

Verify this receipt yourself + Watch this domain

Up right now

Email byMicrosoft 365

Secured byCloudSecure Corporation

Also usesGoogle Search Console

1 subdomain · tranco

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 rubycon.co.jp. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_6f7e15670b0dff6b
Output Hash: 7d4479bf0124a45b396f2006538eea34802eb5eb3302bde1503efe8a7dd31cf1
Signature: ed25519:a55a550085eccd505a320c0bd712a4a5e3e4f36e4b5b694fd42c71f59e7bafd470ebf52cc433f0de7dade54d73b62565bc56f8dc729dd8534f80e8cf9f0a6b05
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/rubycon.co.jp