From 6c7562912971540c681bb6597f1ef27298b98e82 Mon Sep 17 00:00:00 2001
From: Felipe Correa da Silva Sanches <juca@members.fsf.org>
Date: Thu, 26 Feb 2026 06:54:04 +0000
Subject: [PATCH] Contrail One: add source block to METADATA.pb

- Repo: librefonts/contrailone
- Commit: 21ed6044 (only commit in repo)
- Config: none (SFD-only sources)
- Status: missing_config
- Confidence: HIGH
---
 ofl/contrailone/METADATA.pb      |  5 ++++
 ofl/contrailone/upstream_info.md | 49 ++++++++++++++++++++++++++++++++
 2 files changed, 54 insertions(+)
 create mode 100644 ofl/contrailone/upstream_info.md

diff --git a/ofl/contrailone/METADATA.pb b/ofl/contrailone/METADATA.pb
index bc57af7cbf..267df4c2a5 100644
--- a/ofl/contrailone/METADATA.pb
+++ b/ofl/contrailone/METADATA.pb
@@ -3,6 +3,11 @@ designer: "Riccardo De Franceschi"
 license: "OFL"
 category: "DISPLAY"
 date_added: "2011-10-26"
+source {
+  repository_url: "https://github.com/librefonts/contrailone"
+  commit: "21ed60440130b6afcdd5e7555e9fe7c8c4344146"
+}
+
 fonts {
   name: "Contrail One"
   style: "normal"
diff --git a/ofl/contrailone/upstream_info.md b/ofl/contrailone/upstream_info.md
new file mode 100644
index 0000000000..8db60d5523
--- /dev/null
+++ b/ofl/contrailone/upstream_info.md
@@ -0,0 +1,49 @@
+# Contrail One - Investigation Report
+
+## Source Data
+
+| Field | Value |
+|-------|-------|
+| Family Name | Contrail One |
+| Designer | Riccardo De Franceschi |
+| Repository URL | https://github.com/librefonts/contrailone |
+| Commit | 21ed60440130b6afcdd5e7555e9fe7c8c4344146 |
+| Branch | master |
+| Config YAML | N/A (SFD-only sources) |
+| Status | missing_config |
+
+## How URL Found
+
+The repository URL `https://github.com/librefonts/contrailone` was identified from the librefonts organization. The source block was added in commit `9a14639f3` ("Add source blocks to 602 more METADATA.pb files") on the pending PR branch `sources_info_2026-02-25` (PR #10270). This PR has not yet been merged into main.
+
+The current METADATA.pb on main does not have a source block. The copyright mentions Sorkin Type Co (Eben Sorkin) as the foundry.
+
+## How Commit Determined
+
+The commit `21ed60440130b6afcdd5e7555e9fe7c8c4344146` is the HEAD (and only commit in the shallow clone) of the `librefonts/contrailone` repository. The commit message is "update .travis.yml". This follows the standard librefonts repo pattern.
+
+## Config YAML Status
+
+No config.yaml exists in the upstream repository. The source files are:
+- `src/ContrailOne-Regular-TTF.sfd` (FontForge SFD format)
+- `src/ContrailOne-Regular.vfb` (FontLab VFB format)
+
+These formats are not compatible with gftools-builder. No override config.yaml exists in the google/fonts family directory.
+
+## Verification
+
+- Repository URL returns HTTP 200 (inferred from successful git clone in cache)
+- Commit hash matches the HEAD of the cached repo
+- The font binary has never been updated since the initial commit and the deploy commit
+- Added to Google Fonts on 2011-10-26
+- No source block exists in the main branch METADATA.pb (pending PR #10270)
+
+## Confidence Level
+
+**High** for repository URL and commit hash.
+
+**N/A** for config.yaml - the sources are in legacy formats (SFD/VFB) not supported by gftools-builder.
+
+## Open Questions
+
+None. This is a straightforward legacy font with SFD/VFB sources in a standard librefonts archive repository.
-- 
2.47.3