blog.langchain.com
Observed Jul 21, 2026, 19:56 UTC (15h 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.
Up right now
Runs onCloudflare
Secured byLet's Encrypt
1 subdomain · push_legacy
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat blog.langchain.com actually stands on - every host below is a signed observation
blog.langchain.com
A / AAAA
34.8.121.39
Cloudflareserves the site
TLS
www.smith.langchain.com
Let's Encryptissued its certificate
DNS Records
A 1
34.8.121.39
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
www.smith.langchain.com |
C=US, O=Let's Encrypt, CN=YR1 | Thu, 15 Oct 2026 20:47:13 +0000 |
YR1 |
C=US, O=ISRG, CN=Root YR | Sat, 02 Sep 2028 23:59:59 +0000 |
Root YR |
C=US, O=Internet Security Research Group, CN=ISRG Root X1 | Thu, 02 Sep 2032 23:59:59 +0000 |
Subdomains (1)
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 receiptPut the receipt on your own site. A live badge showing what DomainDrift observes and signs for blog.langchain.com. It updates itself. It attests a signed observation - not that the site is safe.
<a href="https://domaindrift.io/t/blog.langchain.com">
<img src="https://domaindrift.io/badge/blog.langchain.com.svg"
width="300" height="64" alt="DomainDrift signed observations for blog.langchain.com">
</a>
Ed25519 Receipt
- Receipt ID
rcpt_f724f609960c0920- Output Hash
4ad9c5681e950fab77773bd5598fcee9d8686aa719fd6a8a164c1e38884478a7- Signature
ed25519:b1a97ad834e494d7d80ed705a3a489a714e2eea76de6ed4cdcf1e3138583029df38359714c3eda290565d74137376bc5fb969a3ea862a449ba39a94a7df5a206- Public Key
ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8- Parent
(genesis)- Plane
- fast