> ## Documentation Index
> Fetch the complete documentation index at: https://docs.deepidv.com/llms.txt
> Use this file to discover all available pages before exploring further.

# The Log

> The macro view of the transparency log — STHs, tree growth, and the master public key

> The log at [proof.deepidv.com/log](https://proof.deepidv.com/log) gives you the macro view of the transparency log as a whole.

## STH timeline

Every hour, every active segment produces a Signed Tree Head. The log page lists the most recent STHs across all segments, with:

* Segment ID
* Tree size
* Root hash (truncated, click to expand)
* Master signature (truncated)
* RFC 3161 timestamp tokens
* Base L2 anchor tx hash (linked to Basescan)

## Tree size sparkline

A visual chart showing how the log has grown over time. Useful for confirming activity, spotting anomalies, and understanding the cadence of attestations.

## Master public key

The master STH key's public PEM is downloadable directly from the log page. Anyone verifying a proof bundle offline can use this to confirm the master signature on any STH.

<Tip>
  Save a local copy of `master.pem` today. If deepidv ever became unreachable, you'd still be able to verify any STH offline using only the master public key and the on-chain anchor.
</Tip>