book.app

Observed Aug 2, 2026, 22:23 UTC (11d ago). Every field below was attested with an Ed25519 signature at scan time.

This reading of book.app was taken 11d ago

book.app is on the survey sweep, which works its way across the whole catalog rather than returning to one name on a schedule. Putting book.app 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 book.app Watching a domain needs a DRM3 account. The reading above stays free and public either way.

Verify this receipt yourself + Watch this domain

Up right now

Runs onAmazon

Secured byZeroSSL GmbH

Registered withGoDaddy.com, LLC

Also usesFacebook/MetaGoogle Search Console

tranco

Every line above is a signed observation. Check the math at the bottom of the page.

INFRASTRUCTURE MAPwhat book.app actually stands on - every host below is a signed observation

book.app

A / AAAA

35.71.171.174166.117.117.82

Amazonserves the site

ns-1383.awsdns-44.orgns-165.awsdns-20.comns-1654.awsdns-14.co.ukns-661.awsdns-18.net

awsdns-44.org + awsdns-20.com + moreanswers its DNS

inbound.postmarkapp.com

postmarkapp.comreceives its email

TLS

book.app

ZeroSSL GmbHissued its certificate

DNS Records

A 2

35.71.171.174
166.117.117.82

MX 1

10inbound.postmarkapp.com

TXT 3

facebook-domain-verification=qu35jfxhi9a952b7rzp9ddkw39sf2x
google-site-verification=uBaV15XEbs17EapP9d1UYJoojPCF1y9DeouTcG8mHiA
v=spf1 a mx include:spf.mtasv.net ~all

NS 4

ns-1383.awsdns-44.org
ns-165.awsdns-20.com
ns-1654.awsdns-14.co.uk
ns-661.awsdns-18.net

SOA 1

ns-1654.awsdns-14.co.uk awsdns-hostmaster.amazon.com

DMARC_RECORDS 1

v=DMARC1; p=quarantine; pct=100; rua=mailto:re+we678og77km@dmarc.postmarkapp.com; sp=quarantine; aspf=r;

BIMI_RECORDS 1

v=BIMI1; l=https://static.bookapp.dev/bimi.svg; a=;

TLS Certificates (3)

Common Name	Issuer	Expires
`book.app`	C=AT, O=ZeroSSL GmbH, CN=ZeroSSL RSA DV SSL CA 2	Thu, 22 Oct 2026 23:59:59 +0000
`ZeroSSL RSA DV SSL CA 2`	C=GB, O=Sectigo Limited, CN=Sectigo Public Server Authentication Root R46	Sun, 23 Sep 2035 23:59:59 +0000
`Sectigo Public Server Authentication Root R46`	C=US, ST=New Jersey, L=Jersey City, O=The USERTRUST Network, CN=USERTrust RSA Certification Authority	Mon, 18 Jan 2038 23:59:59 +0000

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 Receipt

Receipt ID: rcpt_99fa026299810b88
Output Hash: cc92050c0ca12e104b1e750f7501b4e15fd562d0757e8ad33e74adce39473e0d
Signature: ed25519:501881e21eb64369e7d4c79e44589e21c6c146938c3ab1ca5cffd5261c6605591658e1210805cf1c09d6ea78896d5981e468bd1ff86c54e99cfce0b658d3cc08
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

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