cut-the-knot.org

Observed Aug 12, 2026, 06:04 UTC (22d ago). Every field below was attested with an Ed25519 signature at scan time.

This reading of cut-the-knot.org was taken 22d ago

cut-the-knot.org is on the survey sweep, which works its way across the whole catalog rather than returning to one name on a schedule. Putting cut-the-knot.org 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 cut-the-knot.org Watching a domain needs a DRM3 account. The reading above stays free and public either way.
Up right now
Runs onGoDaddy
Secured byGoDaddy.com
Registered withGoDaddy Corporate Domains, LLC
1 subdomain · tranco
Every line above is a signed observation. Check the math at the bottom of the page.
DRIFT

Steady. No change on record for cut-the-knot.org 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 4

A1NS2SOA1

TLS certificates 2

Issued byGoDaddy.com
ExpiresFri, 13 No (71d)
Certificate nameswithheld

Subdomains 1

1 subdomain hostname observed and signed - the list itself is part of the paid record.

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_0a6c76ee6e209cd5
Output Hash
ef5f096827dfd5612659f16bad7c73301f6adf7f149ffe190be660f4e044afdb
Signature
ed25519:ab8a3d473a657a030be31bf3eb23a210bdd246c05ab26bdaa853184d9945c05f59039fc14d553c59b46c78a647827b77eda10ace65b65eff370b362fa0f2a40d
Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent
(genesis)
Plane
fast
CONTINUOUS INTERNET TELEMETRY24H DRIFT5,946 material changesacross 4,175 domains · 24h to ~2h ago · -1,677 vs yesterdayDNS DRIFT86 domains changed DNS providertop destination koaladns.comCERT DRIFT1 domains switched issuing CA24hREGISTRAR DRIFT2 changed registrar24hNOW621 curated domains not reachable+25 vs yesterdaySITE ERRORS18,187 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 80,395 sites429 rate-limit / 403 bot-block, a posture signal