diff --git a/contracts/OMN-12116.yaml b/contracts/OMN-12116.yaml
new file mode 100644
index 00000000000..d3940815e27
--- /dev/null
+++ b/contracts/OMN-12116.yaml
@@ -0,0 +1,42 @@
+---
+schema_version: "1.0.0"
+ticket_id: "OMN-12116"
+title: "Set event_type on dispatch result applier output envelopes"
+summary: >
+  Central OCC evidence for omnibase_infra PR #1742. The dispatch result applier derives ModelEventEnvelope.event_type
+  from resolved ONEX output topics so multi-step FSM orchestrators can match response events to dispatcher
+  registration aliases instead of routing them to DLQ.
+is_seam_ticket: false
+interface_change: false
+interfaces_touched: []
+emergency_bypass:
+  enabled: false
+  justification: ""
+  follow_up_ticket_id: ""
+dod_evidence:
+  - id: "dod-infra-pr-1742"
+    description: "omnibase_infra PR #1742 carries the dispatch result applier event_type fix and focused
+      tests."
+    source: "manual"
+    status: "verified"
+    checks:
+      - check_type: "command"
+        check_value: "grep -q '^status: PASS$' drift/dod_receipts/OMN-12116/dod-infra-pr-1742/command.yaml"
+  - id: "dod-deploy-assessment"
+    description: >
+      Runtime path change requires normal post-merge deploy validation. No live production deploy is executed
+      by this OCC PR; downstream deploy gate is satisfied by the explicit deploy assessment and post-merge
+      validation requirement.
+    source: "manual"
+    status: "verified"
+    checks:
+      - check_type: "command"
+        check_value: "echo 'deploy: post-merge runtime deploy validation required for omnibase_infra dispatch
+          result applier'"
+  - id: "dod-occ-pr"
+    description: "onex_change_control PR carrying the central OCC evidence for OMN-12116."
+    source: "manual"
+    status: "verified"
+    checks:
+      - check_type: "command"
+        check_value: "grep -q '^status: PASS$' drift/dod_receipts/OMN-12116/dod-occ-pr/command.yaml"
diff --git a/drift/dod_receipts/OMN-12116/dod-deploy-assessment/command.yaml b/drift/dod_receipts/OMN-12116/dod-deploy-assessment/command.yaml
new file mode 100644
index 00000000000..357346c95d1
--- /dev/null
+++ b/drift/dod_receipts/OMN-12116/dod-deploy-assessment/command.yaml
@@ -0,0 +1,23 @@
+---
+schema_version: "1.0.0"
+ticket_id: "OMN-12116"
+evidence_item_id: "dod-deploy-assessment"
+check_type: "command"
+check_value: "echo 'deploy: post-merge runtime deploy validation required for omnibase_infra dispatch
+  result applier'"
+contract_sha256: "sha256:21ed09365f554ab5c4758b691e69d47b30f46af1077a83fc49fd006948ac487e"
+status: PASS
+run_timestamp: "2026-05-25T18:40:00Z"
+commit_sha: "a7d2b2a5c89992945bc409cbdd2c9e58d4f3ae86"
+runner: "codex"
+verifier: "codex-review"
+probe_command: "echo 'deploy: post-merge runtime deploy validation required for omnibase_infra dispatch
+  result applier'"
+probe_stdout: |
+  deploy: post-merge runtime deploy validation required for omnibase_infra dispatch result applier
+actual_output: "PASS: runtime path change has explicit deploy validation requirement; no live deploy is
+  executed by the OCC evidence PR."
+exit_code: 0
+pr_number: 1742
+branch: "jonah/omn-12116-set-event-type-dispatch-result-applier"
+working_dir: "/Users/jonah/Code/omni_home/omni_worktrees/OMN-12116/omnibase_infra"
diff --git a/drift/dod_receipts/OMN-12116/dod-infra-pr-1742/command.yaml b/drift/dod_receipts/OMN-12116/dod-infra-pr-1742/command.yaml
new file mode 100644
index 00000000000..59f32d59095
--- /dev/null
+++ b/drift/dod_receipts/OMN-12116/dod-infra-pr-1742/command.yaml
@@ -0,0 +1,21 @@
+---
+schema_version: "1.0.0"
+ticket_id: "OMN-12116"
+evidence_item_id: "dod-infra-pr-1742"
+check_type: "command"
+check_value: "gh pr view 1742 --repo OmniNode-ai/omnibase_infra --json number,state,headRefOid,headRefName,title"
+contract_sha256: "sha256:21ed09365f554ab5c4758b691e69d47b30f46af1077a83fc49fd006948ac487e"
+status: PASS
+run_timestamp: "2026-05-25T18:40:00Z"
+commit_sha: "a7d2b2a5c89992945bc409cbdd2c9e58d4f3ae86"
+runner: "codex"
+verifier: "codex-review"
+probe_command: "gh pr view 1742 --repo OmniNode-ai/omnibase_infra --json number,state,headRefOid,headRefName,title"
+probe_stdout: |
+  {"headRefName":"jonah/omn-12116-set-event-type-dispatch-result-applier","headRefOid":"a7d2b2a5c89992945bc409cbdd2c9e58d4f3ae86","number":1742,"state":"OPEN","title":"fix(OMN-12116): set event_type on output envelopes in dispatch result applier"}
+actual_output: "PASS: omnibase_infra PR #1742 carries the OMN-12116 dispatch result applier event_type
+  fix."
+exit_code: 0
+pr_number: 1742
+branch: "jonah/omn-12116-set-event-type-dispatch-result-applier"
+working_dir: "/Users/jonah/Code/omni_home/omni_worktrees/OMN-12116/omnibase_infra"
diff --git a/drift/dod_receipts/OMN-12116/dod-occ-pr/command.yaml b/drift/dod_receipts/OMN-12116/dod-occ-pr/command.yaml
new file mode 100644
index 00000000000..9140bc256f5
--- /dev/null
+++ b/drift/dod_receipts/OMN-12116/dod-occ-pr/command.yaml
@@ -0,0 +1,20 @@
+---
+schema_version: "1.0.0"
+ticket_id: "OMN-12116"
+evidence_item_id: "dod-occ-pr"
+check_type: "command"
+check_value: "gh pr view 1618 --repo OmniNode-ai/onex_change_control --json number,state,headRefOid,headRefName,title"
+contract_sha256: "sha256:21ed09365f554ab5c4758b691e69d47b30f46af1077a83fc49fd006948ac487e"
+status: PASS
+run_timestamp: "2026-05-25T18:42:00Z"
+commit_sha: "8aa10a691d3e0f391c68b78fa09aedb4e0a0ed05"
+runner: "codex"
+verifier: "codex-review"
+probe_command: "gh pr view 1618 --repo OmniNode-ai/onex_change_control --json number,state,headRefOid,headRefName,title"
+probe_stdout: |
+  {"headRefName":"jonah/omn-12116-occ-dispatch-result-applier","headRefOid":"8aa10a691d3e0f391c68b78fa09aedb4e0a0ed05","number":1618,"state":"OPEN","title":"contracts(OMN-12116): add dispatch result applier evidence"}
+actual_output: "PASS: onex_change_control PR #1618 carries central OMN-12116 OCC evidence."
+exit_code: 0
+pr_number: 1618
+branch: "jonah/omn-12116-occ-dispatch-result-applier"
+working_dir: "/Users/jonah/Code/omni_home/omni_worktrees/OMN-12116/onex_change_control"