diff --git a/README.md b/README.md
index 762c9ec3..fbf129ac 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,11 @@
 
 <h1 align="center">Brainy</h1>
 
+> **Frozen at 10.4.13 (2026-09-03).** This repository is the reference implementation of the Brainy store format and API,
+> published under the MIT license. Version 10.4.13 is its last release; the repository is read-only from here. The engine
+> continues as `@soulcraft/brainy`, which bundles this layer as owned code; every published version of this package stays
+> available on The Source. Use this repository to read a Brainy store independently or to verify the conformance contract.
+
 <p align="center">
   <b>Three database paradigms. One API. Zero configuration.</b><br>
   The in-process knowledge database for TypeScript — vector search, graph traversal,<br>
diff --git a/RELEASES.md b/RELEASES.md
index c875cb26..64e64873 100644
--- a/RELEASES.md
+++ b/RELEASES.md
@@ -1,5 +1,8 @@
 # @soulcraft/brainy — Release Notes for Consumers
 
+> **Frozen at 10.4.13 (2026-09-03).** 10.4.13 is the last release of `@soulcraftlabs/brainy`; this repository is read-only from here.
+> Release notes for the product engine continue on its own wall.
+
 Machine-readable release notes are published at
 https://source.soulcraft.com/soulcraftlabs/releases/raw/branch/main/open-brainy.json
 (this engine) and