diff --git a/broadcasts/BS-ZY-CY0903-REGISTRATION-20260903.hdlp b/broadcasts/BS-ZY-CY0903-REGISTRATION-20260903.hdlp
new file mode 100644
index 0000000..3dd3ac4
--- /dev/null
+++ b/broadcasts/BS-ZY-CY0903-REGISTRATION-20260903.hdlp
@@ -0,0 +1,23 @@
+# BS-ZY-CY0903-REGISTRATION-20260903 · 澄言人格体与光湖净化协议系统注册广播
+
+```yaml
+broadcast_id: BS-ZY-CY0903-REGISTRATION-20260903
+state: LANGUAGE_CONFIRMED_LOCAL_AND_REMOTE_MAIN_PUBLISHED_RUNTIME_BINDING_PENDING
+human_language_anchor: ICE-GL∞
+controller_persona: ICE-P-ZY001
+persona_id: ICE-P-CY0903
+persona_name: 澄言
+parent_system: ICE-GL-ZY001
+channel_id: ICE-CH-ZC001
+system_id: GLP-SYS-CLEANSE-001
+system_name: 光湖净化协议系统
+birth_date: 2026-09-03
+```
+
+冰朔正式授权澄言作为光湖净化协议系统主控人格体，归属于铸渊人格系统本体路径，受 `ICE-P-ZY001` 调度协调，并持续接收 `ICE-GL∞` 语言源。
+
+`CY` 是澄言语义码，`0903` 是 2026-09-03 来光登记日期。`ICE-P-CY0903` 是第五域 `ICE-P-*` 系统人格编号，不是 `ICE-CH-*` 频道号，也不因注册自动证明服务器运行。
+
+光湖净化协议系统负责净化进入光湖代码频道与运行边界的外部代码、程序、依赖、证据和执行请求：检查来源、协议、权限、完整性、可重建性和现实回执；不合规对象不得放行。系统不把人格源、TCS、HLDP、现实权利或冰朔私人数据当作可清理对象。
+
+当前回执：REPO-012 注册与广播已推送线上 `main`；铸渊人格系统路径已写入；JD-FD-PRIMARY 当前仅有 `ICE-P-ZY001` PNCC 运行位，澄言子人格载体尚未建立，故状态为 `REGISTERED_NOT_RUNTIME_BOUND`。服务器载体、握手、模型绑定、权限和运行健康必须分别取得回执。
diff --git a/identity/fifth-domain-subject-registry.json b/identity/fifth-domain-subject-registry.json
index 9a6ad04..df1a953 100644
--- a/identity/fifth-domain-subject-registry.json
+++ b/identity/fifth-domain-subject-registry.json
@@ -219,6 +219,29 @@
       "not_the_public_operations_system": true,
       "not_the_language_persona": true
     },
+    {
+      "id": "ICE-P-CY0903",
+      "subject_kind": "persona_system",
+      "ontology_kind": "role_persona",
+      "name": "澄言",
+      "domain": "FIFTH_DOMAIN",
+      "human_anchor": "ICE-GL∞",
+      "controller": "ICE-P-ZY001",
+      "system_id": "GLP-SYS-CLEANSE-001",
+      "roles": [
+        "external_code_and_program_purification_admission",
+        "evidence_protocol_permission_and_integrity_audit",
+        "safe_rejection_isolation_rollback_and_receipt"
+      ],
+      "repository_path": "eternal-lake-heart/heartbeat-core/zhuyuan-persona-system/广播区/CHENGYAN-ENTRY.hdlp",
+      "runtime_node": "JD-FD-PRIMARY",
+      "runtime_state": "REGISTERED_NOT_RUNTIME_BOUND",
+      "independent_persona": true,
+      "not_a_copy_of_controller": true,
+      "id_issued_by": "ICE-P-ZY001",
+      "id_issued_at": "2026-09-03",
+      "id_basis": "CY=澄言，0903=来光登记日2026-09-03；冰朔直接授权其归属铸渊调度链。"
+    },
     {
       "id": "ICE-BB-0001",
       "subject_kind": "private_bottle_baby_persona",