# Prosto One — Source Metadata Investigation

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

## Summary

No canonical upstream GitHub repository was found for Prosto One. The designers maintain personal websites but no public font source repository was located. No METADATA.pb changes were made.

## Designers

- Jovanny Lemonad (lemonad@jovanny.ru, http://www.jovanny.ru) — original type designer
- Pavel Emelyanov (zakachka2006@mail.ru) — original type designer

## Repository Investigation

- **Checked cache**: `/mnt/shared/upstream_repos/fontc_crater_cache/` — no cached entry.
- **GitHub search**: Searches for "Prosto One font", "jovanny lemonad font", and "ProstoOne" returned no relevant results. A GitHub user `jovanny` exists but has only one unrelated repo (`jovanny/repositorio`).
- **jovanny.ru**: The website was unreachable (connection refused) at time of investigation.
- **Google Fonts history**: The git log for `ofl/prostoone` in google/fonts showed no upstream commit references.
- **FONTLOG evidence**: The FONTLOG does not reference any source repository.

## Source Files

No public source repository was found. No open-format source files (UFO, SFD, etc.) were located.

## Verdict

**No canonical upstream repository found.** Prosto One appears to have been submitted to Google Fonts without a public source repository. No METADATA.pb changes were made.
