derivativecalc.com

Observed Aug 11, 2026, 05:28 UTC (19d ago). Every field below was attested with an Ed25519 signature at scan time.

This reading of derivativecalc.com was taken 19d ago

derivativecalc.com is on the survey sweep, which works its way across the whole catalog rather than returning to one name on a schedule. Putting derivativecalc.com under watch moves it to the fast lane, where DomainDrift re-checks it about every 5 minutes and signs each reading, so a change becomes a dated event within minutes instead of waiting for the sweep to come round.

Watch derivativecalc.com Watching a domain needs a DRM3 account. The reading above stays free and public either way.
DRIFT

Steady. No change on record for derivativecalc.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.

SIGNED-OUT VIEW Provider names, posture and counts are shown. The record values - every DNS answer, each subdomain hostname, raw TXT, IPs, cert names and WHOIS - are the product. Sign in for the full signed record, or use the API with a key.

DNS records 7

A2AAAA2NS2SOA1

TLS certificates 4

Issued byLet's Encrypt
ExpiresTue, 13 Oc (44d)
Certificate nameswithheld

Subdomains 0

None observed.

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; the only network request the check makes is for the published public keys.

Verify this receipt
Ed25519 receiptthe raw cryptographic proof
Receipt ID
rcpt_856d285a3964c889
Output Hash
fa23c1cb6491d4c5ee0971e6ffb60be0c6e2867ddf70dd48a0a3651e1958b895
Signature
ed25519:7339e1bc24a9c97afafaae02d735a8090f3cbacfb15cb87df386189892ba469868dccca539f9eab94e2bca049865ffaf379aa73b84c237955ef5743d39900707
Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent
(genesis)
Plane
fast
CONTINUOUS INTERNET TELEMETRY24H DRIFT4,773 material changesacross 3,298 domains · last 24h · -454 vs yesterdayROTATION56 domains moved DNS from koaladns.com to magpiedns.com, 51 moved backa rotation loop, not a migration · 24hEMAIL DRIFT1 domain switched email provider24hCERT DRIFT1 domains switched issuing CA24hREGISTRAR DRIFT2 changed registrar24hNOW544 curated domains not reachablelast probe, steadySITE ERRORS17,768 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 79,244 sites429 rate-limit / 403 bot-block, a posture signal