# PT Serif — Source Metadata Investigation

**Model**: Claude Opus 4.6
**Date**: 2026-03-12

## Summary

No canonical upstream GitHub repository was found for PT Serif. ParaType does not maintain a public GitHub repository for the PT font families. No METADATA.pb changes were made.

## Designer

ParaType (yakupov@paratype.com). Copyright 2010 ParaType Ltd.

## Repository Investigation

- **Checked cache**: `/mnt/shared/upstream_repos/fontc_crater_cache/` — no cached entry.
- **GitHub organization**: The `paratype` GitHub organization exists but contains only two unrelated repositories — no font source repositories.
- **GitHub search**: Searches for "PT Serif paratype OFL", "ptserif font", and "PT fonts paratype" returned no canonical designer-owned repository.
- **Third-party mirrors**: No packaging mirrors were found for PT Serif specifically, unlike PT Sans.
- **paratype.com**: No source repository link was found.

## Context

PT Serif is the serif companion to PT Sans, part of the PT (Public Type) family commissioned by the Federal Agency on Press and Mass Communications of the Russian Federation. Designed by Alexandra Korolkova under Paratype leadership, released in 2010. It covers Latin and Cyrillic scripts with Regular, Bold, Italic, and Bold Italic variants plus PT Serif Caption.

## Verdict

**No canonical upstream repository found.** PT Serif is distributed by ParaType but no public source repository exists. No METADATA.pb changes were made.
