verapdf.org

Observed Jul 26, 2026, 09:02 UTC (7d 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 byGoogle Workspace

Secured byLet's Encrypt

Also usesGoogle Search Console

majestic

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

INFRASTRUCTURE MAPwhat verapdf.org actually stands on - every host below is a signed observation

verapdf.org

A / AAAA

172.104.134.96

unattributedserves the site

ns1.linode.comns3.linode.comns5.linode.comns2.linode.com+1 more

linode.comanswers its DNS

ALT4.ASPMX.L.GOOGLE.COMALT2.ASPMX.L.GOOGLE.COMALT3.ASPMX.L.GOOGLE.COMASPMX.L.GOOGLE.COM+1 more

Google Workspacereceives its email

TLS

verapdf.org

Let's Encryptissued its certificate

DNS Records

A 1

172.104.134.96

MX 5

10ALT4.ASPMX.L.GOOGLE.COM
5ALT2.ASPMX.L.GOOGLE.COM
10ALT3.ASPMX.L.GOOGLE.COM
1ASPMX.L.GOOGLE.COM
5ALT1.ASPMX.L.GOOGLE.COM

TXT 4

v=DMARC1; p=none; rua=mailto:admin@openpreservation.org
google-site-verification=N-VzVAKtWx9gKbNS2OstV857rn_-JC49ykAcCDiOq80
v=spf1 include:_spf.google.com ~all
v=DMARC1; p=none; rua=mailto:admin@openpreservation.org

NS 5

ns1.linode.com
ns3.linode.com
ns5.linode.com
ns2.linode.com
ns4.linode.com

SOA 1

ns1.linode.com admin.openpreservation.org

TLS Certificates (7)

Common Name	Issuer	Expires
`verapdf.org`	C=US, O=Let's Encrypt, CN=YE2	Mon, 28 Sep 2026 12:44:05 +0000
`YE2`	C=US, O=ISRG, CN=Root YE	Sat, 02 Sep 2028 23:59:59 +0000
`Root YE`	C=US, O=Internet Security Research Group, CN=ISRG Root X2	Thu, 02 Sep 2032 23:59:59 +0000
`ISRG Root X2`	C=US, O=Internet Security Research Group, CN=ISRG Root X1	Thu, 02 Sep 2032 23:59:59 +0000
`YE2`	C=US, O=ISRG, CN=Root YE	Sat, 02 Sep 2028 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; nothing leaves your machine.

Verify this receipt

Put the receipt on your own site. A live badge showing what DomainDrift observes and signs for verapdf.org. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_9d2acc79abcc8c42
Output Hash: 91ccd5dead2c3f81224bc8c22620abc229079dcecfeda93ea8d48aea462f7364
Signature: ed25519:508affd26f8af663cf17e458cc24119af9250aa7d4ad201cefe0f957f82b75505f38bfc9603337b0471b3950294633272cc6b6342a2831fc6261e231d9e36000
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

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Permalink: https://domaindrift.io/t/verapdf.org