diff --git a/docs/evidence/symbol-id-selection-stream-20260905.json b/docs/evidence/symbol-id-selection-stream-20260905.json
new file mode 100644
index 0000000..bbcc2bf
--- /dev/null
+++ b/docs/evidence/symbol-id-selection-stream-20260905.json
@@ -0,0 +1,85 @@
+{
+  "schemaVersion": "fidc-symbol-id-selection-stream/v1",
+  "measuredAt": "2026-09-05T04:53:13+08:00",
+  "host": "192.168.31.177",
+  "engineCommit": "0e3c2028d0b0a26a2d3b8e2fb9dd0765c60809b1",
+  "serviceCommit": "9fd5a9e6d5668af57f6942fc3c4127953545d9c6",
+  "runnerBinarySha256": "386e5542d66bc6850f9569dc25d061f043103df279d3aba5e86343a72d5113f9",
+  "implementation": {
+    "description": "scan signal-day selection risk into a market-cap-ordered u32 symbol-id stream and materialize EligibleUniverseSnapshot rows only for strategies that require the generic ranking path",
+    "fastPathContract": "ascending market_cap or market_cap_bn rank with daily_replacement_limit=0",
+    "genericRankingChanged": false,
+    "selectionResultCached": false,
+    "factorValueCached": false,
+    "riskDecisionOrderChanged": false,
+    "pitSemanticsChanged": false
+  },
+  "primaryFiveYearContract": {
+    "startDate": "2021-08-23",
+    "endDate": "2026-08-28",
+    "frequency": "1d",
+    "matchingType": "next_bar_open",
+    "totalReturn": 0.9219861819172002,
+    "tradeCount": 26088,
+    "canonicalSha256": "b42fea66237d06eadb24f6b8c9e2760e7319fe3699f315b99e01f433ef2aa234",
+    "resultStoreSha256": "92343fb369fea68b2544b654151c5c43a935940580b14afbe8eefb3844f72a54",
+    "restartOrCold": {
+      "totalSeconds": 19.223,
+      "dataSeconds": 14.395,
+      "engineSeconds": 4.182
+    },
+    "processHotEngineSeconds": [3.438, 3.185, 3.346, 3.288, 3.294],
+    "processHotMedianEngineSeconds": 3.294,
+    "previousAcceptedMedianEngineSeconds": 3.896,
+    "observedMedianImprovementPercent": 15.451745,
+    "resultConsistent": true,
+    "terminalAuditStatus": "clean"
+  },
+  "secondaryFiveYearContract": {
+    "totalReturn": 1.1342962298106998,
+    "tradeCount": 19404,
+    "canonicalSha256": "0dbd3fad624097c673c4a5ec2f545f95e9c21d1d5337bb2b48ffeb22b16cb2b9",
+    "resultStoreSha256": "416d2f87241fb4c6b917f6aeecb588f82f6e7d51a103f4c53a74d11971f16839",
+    "engineSeconds": [2.871, 2.897, 2.899, 2.964, 2.948, 2.922],
+    "medianEngineSeconds": 2.922,
+    "previousAcceptedMedianEngineSeconds": 3.582,
+    "observedMedianImprovementPercent": 18.425461,
+    "resultConsistent": true,
+    "terminalAuditStatus": "clean"
+  },
+  "profile": {
+    "runId": "btr_1788555090941_297399_12",
+    "engineSeconds": 3.37,
+    "allThreadEventCycles": 77490041805,
+    "stockStateBySymbolIdPercent": 13.59,
+    "numericVmEvaluatePercent": 8.27,
+    "adjustedCloseMovingAveragePercent": 4.74,
+    "selectionSymbolIdScanPercent": 3.53,
+    "selectSymbolsPercent": 3.26,
+    "stringTrimPercent": 3.14,
+    "mallocPercent": 2.82,
+    "lostSamples": 0
+  },
+  "memory": {
+    "serviceCgroupCurrentBytes": 11481071616,
+    "serviceCgroupPeakBytes": 11488108544,
+    "cacheMemoryAddedBytes": 0
+  },
+  "testGate": {
+    "workspaceTotal": 544,
+    "passed": 536,
+    "ignoredManualBenchmarks": 8,
+    "failed": 0
+  },
+  "remoteArtifacts": [
+    "/srv/fidc/canonical/run/fidc-private/evidence/symbol-id-selection-primary-20260905.json",
+    "/srv/fidc/canonical/run/fidc-private/evidence/symbol-id-selection-secondary-20260905.json",
+    "/srv/fidc/canonical/run/fidc-private/evidence/symbol-id-selection-profile-20260905/run.json",
+    "/srv/fidc/canonical/run/fidc-private/evidence/symbol-id-selection-profile-20260905/perf.data",
+    "/srv/fidc/canonical/run/fidc-private/evidence/symbol-id-selection-profile-20260905/perf-report.txt"
+  ],
+  "acceptance": {
+    "status": "accepted_generic_symbol_id_selection_stream",
+    "reason": "both independent five-year contracts preserve exact results and improve stable engine medians materially without adding cache memory or changing generic ranking, risk ordering, or PIT semantics"
+  }
+}