cal.com
Observed Sep 16, 2026, 01:13 UTC (1m 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.
Cloudflare
Google Workspace
GoDaddy.com, LLC
OpenAI
Microsoft 365
HubSpot
Google Search Console
AppleSteady. No change on record for cal.com in the last day; this reading matches the one before it. The steady record is signed like every other reading. Watch it to catch the next move the moment it lands.
HTTPS probe
Every field above is part of the same signed observation as the records below. Blank means not observed, never "none".
DNS records 41
TLS certificates 0
None.
Subdomains 500
500 subdomain hostnames observed and signed - the list itself is part of the paid record.
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; the only network request the check makes is for the published public keys.
Verify this receiptEd25519 receiptthe raw cryptographic proof
- Receipt ID
rcpt_1d743515621a51fe- Output Hash
776c1e430933cad03cd6a6b5469028894527ac783ab88825ae51f206aa7f68d5- Signature
ed25519:0e1d24225f56b3b819d47f0c1e75181a6288ad613e3e7b929e381b3d5ba65b3647d75ea80bcb03d2f81e0f4a499e437683bc4ed417d2e0426920b770efd64202- Public Key
ed25519:7aad40f2d6399c207fe2fc15aade04a78324787a355d36725cc90687f9e10cff- Parent
(genesis)- Plane
- fast