Certificate Transparency tools

Tools for working with Static CT log tiles.

Install

GOPRIVATE=git.ipng.ch go install git.ipng.ch/certificate-transparency/ctfetch/cmd/ctool@latest

The GOPRIVATE variable skips the Go checksum database and module proxy, which do not index modules on git.ipng.ch.

Commands

ctool fetch

Fetch and decode entries from a Static CT log as structured JSON.

ctool fetch https://halloumi2026h1.mon.ct.ipng.ch 1338427439 +all

→ Full documentation

ctool tail

Tail a Static CT log, printing a one-liner per new cert/precert as it arrives.

ctool tail https://gouda2026h2.mon.ct.ipng.ch

→ Full documentation