diff --git a/.custodian-brief.md b/.custodian-brief.md
index 5463a0e..340e06b 100644
--- a/.custodian-brief.md
+++ b/.custodian-brief.md
@@ -2,11 +2,18 @@
 # Custodian Brief — net-kingdom
 
 **Domain:** infotech  
-**Last synced:** 2026-09-23 23:20 UTC  
+**Last synced:** 2026-09-23 23:23 UTC  
 **State Hub:** http://127.0.0.1:8000 *(adjust if running on a remote machine)*
 
 ## Active Workstreams
 
+### Define an execution-attribution receipt for Railiance runs
+Progress: 0/2 done  |  workplan_id: `e2533f3a-aa43-59b3-bff3-8e64b6149487`
+
+**Open tasks:**
+- · Draft the receipt fields as a Playbook Capability Contract amendment  `9d02685a`
+- · Agree the evidence holder and schema with audit-core and Railiance  `963120c1`
+
 ### Fix onboarding-journey defects found in the 2026-09-23 human run
 Progress: 1/3 done  |  workplan_id: `98168f50-7a4d-5bb5-a462-1e031563b89f`