From 6364b5a9424f5ee3d260cafc5bf485fb5cd66b51 Mon Sep 17 00:00:00 2001
From: Mateusz Galazyn <mateusz.galazyn@blockpqr.io>
Date: Fri, 18 Sep 2026 15:24:52 +0200
Subject: [PATCH] cardano-submit-api, cardano-testnet: Add core maintainers
 section with blockpqr

---
 .github/blockpqr-dark-theme.svg                        |  1 +
 .github/blockpqr-light-theme.svg                       |  1 +
 ...0260918_133500_mgalazyn_readme_core_maintainers.yml |  5 +++++
 cardano-node-chairman/README.md                        | 10 ++++++++++
 ...0260918_133500_mgalazyn_readme_core_maintainers.yml |  5 +++++
 cardano-submit-api/README.md                           |  6 ++++++
 ...0260918_133500_mgalazyn_readme_core_maintainers.yml |  5 +++++
 cardano-testnet/README.md                              |  6 ++++++
 8 files changed, 39 insertions(+)
 create mode 100644 .github/blockpqr-dark-theme.svg
 create mode 100644 .github/blockpqr-light-theme.svg
 create mode 100644 cardano-node-chairman/.changes/20260918_133500_mgalazyn_readme_core_maintainers.yml
 create mode 100644 cardano-node-chairman/README.md
 create mode 100644 cardano-submit-api/.changes/20260918_133500_mgalazyn_readme_core_maintainers.yml
 create mode 100644 cardano-testnet/.changes/20260918_133500_mgalazyn_readme_core_maintainers.yml

diff --git a/.github/blockpqr-dark-theme.svg b/.github/blockpqr-dark-theme.svg
new file mode 100644
index 00000000000..9535939c9df
--- /dev/null
+++ b/.github/blockpqr-dark-theme.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="49 60 608 97" width="608" height="97" role="img" aria-label="BlockPQR horizontal lockup on transparent  light art"><g transform="translate(48 139)"><g transform="translate(0 -67.3) scale(3.9913)"><g transform="translate(-1.9 -2.8)"><rect x="3.3" y="8.9" width="6.2" height="6.2" fill="none" stroke="#35c4b0" stroke-width="1.9"/><rect x="13" y="4.2" width="7.6" height="3.86667" fill="#ffffff"/><rect x="13" y="10.0667" width="7.6" height="3.86667" fill="#ffffff"/><rect x="13" y="15.9333" width="7.6" height="3.86667" fill="#35c4b0"/></g></g><text x="112.1" y="0" font-family="ui-monospace,SFMono-Regular,Menlo,monospace" font-size="102" font-weight="600" fill="#ffffff" letter-spacing="0.01em">Block<tspan fill="#35c4b0">PQR</tspan></text></g></svg>
\ No newline at end of file
diff --git a/.github/blockpqr-light-theme.svg b/.github/blockpqr-light-theme.svg
new file mode 100644
index 00000000000..94dbb1ada2d
--- /dev/null
+++ b/.github/blockpqr-light-theme.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="49 60 608 97" width="608" height="97" role="img" aria-label="BlockPQR horizontal lockup on transparent  dark art"><g transform="translate(48 139)"><g transform="translate(0 -67.3) scale(3.9913)"><g transform="translate(-1.9 -2.8)"><rect x="3.3" y="8.9" width="6.2" height="6.2" fill="none" stroke="#0a6f63" stroke-width="1.9"/><rect x="13" y="4.2" width="7.6" height="3.86667" fill="#12181a"/><rect x="13" y="10.0667" width="7.6" height="3.86667" fill="#12181a"/><rect x="13" y="15.9333" width="7.6" height="3.86667" fill="#0a6f63"/></g></g><text x="112.1" y="0" font-family="ui-monospace,SFMono-Regular,Menlo,monospace" font-size="102" font-weight="600" fill="#12181a" letter-spacing="0.01em">Block<tspan fill="#0a6f63">PQR</tspan></text></g></svg>
\ No newline at end of file
diff --git a/cardano-node-chairman/.changes/20260918_133500_mgalazyn_readme_core_maintainers.yml b/cardano-node-chairman/.changes/20260918_133500_mgalazyn_readme_core_maintainers.yml
new file mode 100644
index 00000000000..ee28e113a85
--- /dev/null
+++ b/cardano-node-chairman/.changes/20260918_133500_mgalazyn_readme_core_maintainers.yml
@@ -0,0 +1,5 @@
+pr: 6696
+kind:
+  - documentation
+description: |
+  Added a README with a core maintainers section.
diff --git a/cardano-node-chairman/README.md b/cardano-node-chairman/README.md
new file mode 100644
index 00000000000..d12a220f324
--- /dev/null
+++ b/cardano-node-chairman/README.md
@@ -0,0 +1,10 @@
+# cardano-node-chairman
+
+Chairman is a test tool that connects to several local `cardano-node` instances and checks that they all make progress and agree on the chain.
+The integration tests use it to verify basic consensus liveness on ephemeral testnets.
+
+## Core maintainers
+
+* [Jordan Millar](https://github.com/Jimbo4350) [<picture><source media="(prefers-color-scheme: dark)" srcset="../.github/blockpqr-dark-theme.svg"> <img alt="BlockPQR" src="../.github/blockpqr-light-theme.svg" height="14"> </picture>](https://blockpqr.io)
+* [Mateusz Gałażyn](https://github.com/carbolymer) [<picture><source media="(prefers-color-scheme: dark)" srcset="../.github/blockpqr-dark-theme.svg"> <img alt="BlockPQR" src="../.github/blockpqr-light-theme.svg" height="14"> </picture>](https://blockpqr.io)
+* [Pablo Lamela](https://github.com/palas) [<picture><source media="(prefers-color-scheme: dark)" srcset="../.github/blockpqr-dark-theme.svg"> <img alt="BlockPQR" src="../.github/blockpqr-light-theme.svg" height="14"> </picture>](https://blockpqr.io)
diff --git a/cardano-submit-api/.changes/20260918_133500_mgalazyn_readme_core_maintainers.yml b/cardano-submit-api/.changes/20260918_133500_mgalazyn_readme_core_maintainers.yml
new file mode 100644
index 00000000000..d9968d93192
--- /dev/null
+++ b/cardano-submit-api/.changes/20260918_133500_mgalazyn_readme_core_maintainers.yml
@@ -0,0 +1,5 @@
+pr: 6696
+kind:
+  - documentation
+description: |
+  Added a core maintainers section to the README.
diff --git a/cardano-submit-api/README.md b/cardano-submit-api/README.md
index ee0752ddf12..d11d74542ec 100644
--- a/cardano-submit-api/README.md
+++ b/cardano-submit-api/README.md
@@ -172,3 +172,9 @@ well-formed but invalid transaction, asserting on substrings of the responses.
   reachable on the socket; without one you get a connection error instead and that assertion fails.
 
 Treat a clean run as a smoke signal rather than a conformance test.
+
+## Core maintainers
+
+* [Jordan Millar](https://github.com/Jimbo4350) [<picture><source media="(prefers-color-scheme: dark)" srcset="../.github/blockpqr-dark-theme.svg"> <img alt="BlockPQR" src="../.github/blockpqr-light-theme.svg" height="14"> </picture>](https://blockpqr.io)
+* [Mateusz Gałażyn](https://github.com/carbolymer) [<picture><source media="(prefers-color-scheme: dark)" srcset="../.github/blockpqr-dark-theme.svg"> <img alt="BlockPQR" src="../.github/blockpqr-light-theme.svg" height="14"> </picture>](https://blockpqr.io)
+* [Pablo Lamela](https://github.com/palas) [<picture><source media="(prefers-color-scheme: dark)" srcset="../.github/blockpqr-dark-theme.svg"> <img alt="BlockPQR" src="../.github/blockpqr-light-theme.svg" height="14"> </picture>](https://blockpqr.io)
diff --git a/cardano-testnet/.changes/20260918_133500_mgalazyn_readme_core_maintainers.yml b/cardano-testnet/.changes/20260918_133500_mgalazyn_readme_core_maintainers.yml
new file mode 100644
index 00000000000..d9968d93192
--- /dev/null
+++ b/cardano-testnet/.changes/20260918_133500_mgalazyn_readme_core_maintainers.yml
@@ -0,0 +1,5 @@
+pr: 6696
+kind:
+  - documentation
+description: |
+  Added a core maintainers section to the README.
diff --git a/cardano-testnet/README.md b/cardano-testnet/README.md
index e11c8c6a660..bcc4acf20ec 100644
--- a/cardano-testnet/README.md
+++ b/cardano-testnet/README.md
@@ -397,3 +397,9 @@ and node from the same release tarball as this cardano-testnet.
 
 The cardano-api and cardano-cli versions this build was compiled against are
 printed by `cardano-testnet version`.
+
+## Core maintainers
+
+* [Jordan Millar](https://github.com/Jimbo4350) [<picture><source media="(prefers-color-scheme: dark)" srcset="../.github/blockpqr-dark-theme.svg"> <img alt="BlockPQR" src="../.github/blockpqr-light-theme.svg" height="14"> </picture>](https://blockpqr.io)
+* [Mateusz Gałażyn](https://github.com/carbolymer) [<picture><source media="(prefers-color-scheme: dark)" srcset="../.github/blockpqr-dark-theme.svg"> <img alt="BlockPQR" src="../.github/blockpqr-light-theme.svg" height="14"> </picture>](https://blockpqr.io)
+* [Pablo Lamela](https://github.com/palas) [<picture><source media="(prefers-color-scheme: dark)" srcset="../.github/blockpqr-dark-theme.svg"> <img alt="BlockPQR" src="../.github/blockpqr-light-theme.svg" height="14"> </picture>](https://blockpqr.io)