Observed arrival · 2026-11-12
Treehead’s certificate-transparency firehose
Treehead presents a searchable feed of TLS certificates and a WebSocket stream for newly issued certificates.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Certificate Transparency researchers and security engineers
- Worth noticing
- The page says certificate records expose a leaf hash and audit path, so users can check inclusion rather than rely only on Treehead’s index.
Field notes
The homepage lays out search filters for exact names, expired certificates, final certificates, and issuers, alongside a WebSocket endpoint and client options. Treehead says the stream can resume from a sequence number and remove duplicate certificate copies. It also describes support for both tiled CT logs and classic RFC 6962 logs; these capabilities are presented by the site and are not independently verified by the supplied evidence.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
◎NicheUnusually specific use
One card from the complete issue