diff --git a/src/application/binary/AnalysisSnapshotCache.test.ts b/src/application/binary/AnalysisSnapshotCache.test.ts
index 86640eb2aa..dae7084061 100644
--- a/src/application/binary/AnalysisSnapshotCache.test.ts
+++ b/src/application/binary/AnalysisSnapshotCache.test.ts
@@ -33,6 +33,66 @@ import {
 import { EvidenceLedger } from "../investigation/EvidenceLedger.js";
 import { enhancedOutputSchemas } from "../../contracts/toolOutputSchemaGroups.js";
 
+it.each(["provider", "workflow"] as const)(
+  "owns nested %s execution data before returning control to callers",
+  (kind) => {
+    const cache = new AnalysisSnapshotCache();
+    const target = structuredClone(ANALYSIS_SNAPSHOT_TARGET);
+    const profile = structuredClone(ANALYSIS_SNAPSHOT_PROFILE);
+    const analysisProfile =
+      kind === "provider" ? profile : workflowAnalysisProfile(profile);
+    const execution = createAnalysisExecution(
+      { nested: { value: "original" } },
+      structuredClone(
+        kind === "provider"
+          ? ANALYSIS_SNAPSHOT_PROVIDER
+          : REA_WORKFLOW_PROVIDER,
+      ),
+      {
+        rawResult: { nested: { value: "raw" } },
+        subject: target,
+        analysisProfile,
+        locations: [{ kind: "address", address: "0x1000" }],
+        relationshipCoverage: {
+          status: "partial",
+          limitations: ["original coverage"],
+        },
+      },
+    );
+    const input = {
+      target,
+      profile,
+      operation: "procedure_info" as const,
+      parameters: { address: "0x1000", document: "fixture" },
+      execution: { ...execution, analysisProfile },
+    };
+    if (kind === "provider") cache.record(input);
+    else cache.recordWorkflow(input);
+    const entries = () =>
+      kind === "provider" ? cache.entries() : cache.workflowEntries();
+    const expected = entries();
+    for (const payload of [execution.result, execution.rawResult]) {
+      if (payload === null || typeof payload !== "object")
+        throw new Error("Expected structured observation payload");
+      Reflect.set(payload, "nested", { value: "caller edit" });
+    }
+    const location = execution.locations[0];
+    if (location !== undefined) Reflect.set(location, "address", "0x2000");
+    if (execution.relationshipCoverage?.status === "partial")
+      execution.relationshipCoverage.limitations.push("caller edit");
+    Reflect.set(execution.limitations, 0, "caller limitation");
+    Reflect.set(execution.provider, "name", "caller provider");
+    Reflect.set(execution.subject, "path", "/tmp/caller-edited-subject");
+    if (kind === "workflow") {
+      const upstream = analysisProfile.parameters.upstream_analysis_profile;
+      if (upstream === null || typeof upstream !== "object")
+        throw new Error("Expected nested workflow profile");
+      Reflect.set(upstream, "parameters", { loader: "caller profile" });
+    }
+    expect(entries()).toEqual(expected);
+  },
+);
+
 it("exports independent nested query, workflow and Evidence payloads", () => {
   const cache = new AnalysisSnapshotCache();
   const target = ANALYSIS_SNAPSHOT_TARGET;
diff --git a/src/domain/analysisSnapshot.ts b/src/domain/analysisSnapshot.ts
index a4722fa3c2..2cb1084a78 100644
--- a/src/domain/analysisSnapshot.ts
+++ b/src/domain/analysisSnapshot.ts
@@ -358,25 +358,26 @@ type SnapshotExecutionProjection = Pick<
   | "subject"
 >;
 
-/** Project one authenticated execution into the shared persisted snapshot shape. */
+/** Own one execution's snapshot data independently of its caller-visible result. */
 const snapshotExecutionProjection = (
   execution: SnapshotExecution,
   provider: AnalysisSnapshotEntry["execution"]["provider"],
-): SnapshotExecutionProjection => ({
-  result: execution.result,
-  raw_result: execution.rawResult,
-  provider,
-  limitations: [...execution.limitations],
-  relationship_coverage: execution.relationshipCoverage ?? null,
-  locations: [...execution.locations],
-  subject:
-    execution.subject === null
-      ? null
-      : subjectSchema.parse({
-          ...execution.subject,
-          architecture: execution.subject.architecture ?? null,
-        }),
-});
+): SnapshotExecutionProjection =>
+  entrySchema.shape.execution.parse({
+    result: execution.result,
+    raw_result: execution.rawResult,
+    provider,
+    limitations: execution.limitations,
+    relationship_coverage: execution.relationshipCoverage ?? null,
+    locations: execution.locations,
+    subject:
+      execution.subject === null
+        ? null
+        : {
+            ...execution.subject,
+            architecture: execution.subject.architecture ?? null,
+          },
+  });
 
 const canonicalJson = (value: unknown): string => {
   const json = jsonValueSchema.parse(value);
@@ -549,7 +550,7 @@ export const createAnalysisSnapshotWorkflowEntry = (input: {
         execution,
         execution.analysisProfile.provider,
       ),
-      analysis_profile: execution.analysisProfile,
+      analysis_profile: analysisProfileSchema.parse(execution.analysisProfile),
     },
   };
 };
diff --git a/tests/boundary/filesystem/analysisSnapshotProvenance.test.ts b/tests/boundary/filesystem/analysisSnapshotProvenance.test.ts
index 3b42be0b73..e7b3dba979 100644
--- a/tests/boundary/filesystem/analysisSnapshotProvenance.test.ts
+++ b/tests/boundary/filesystem/analysisSnapshotProvenance.test.ts
@@ -14,6 +14,59 @@ import { buildManagedPeFixture } from "../../../src/dotnet/ManagedPe.fixture.js"
 import { createTestBinarySession } from "../../fixtures/binarySession.js";
 import { createTestTempDirectory } from "../../fixtures/temporaryDirectory.js";
 
+it("keeps real provider replay and persisted Evidence independent of caller edits", async () => {
+  const directory = await createTestTempDirectory(
+    "rea-snapshot-result-ownership-",
+  );
+  const path = join(directory, "application.exe");
+  await writeFile(path, buildManagedPeFixture());
+  const provider = new ManagedStaticProvider();
+  const profile = createAnalysisProfile(MANAGED_STATIC_PROVIDER, {
+    fixture: "snapshot-result-ownership",
+  });
+  const session = createTestBinarySession(provider, {
+    resolveAnalysisProfile: () => Promise.resolve(ok({ profile })),
+  });
+  onTestFinished(async () => {
+    const closed = await session.close();
+    if (!closed.ok) throw closed.error;
+  });
+  const opened = await session.open(path);
+  if (!opened.ok) throw opened.error;
+  const observed = await session.execute("inspect_managed_artifact", {});
+  if (!observed.ok) throw observed.error;
+  const expected = structuredClone(observed.value.result);
+  if (observed.value.evidenceId === undefined)
+    throw new Error("Real managed observation has no Evidence identity");
+  const historical = session.evidenceById(observed.value.evidenceId);
+  if (historical === undefined) throw new Error("Observation was not retained");
+  if (
+    observed.value.result === null ||
+    typeof observed.value.result !== "object"
+  )
+    throw new Error("Expected a structured managed artifact result");
+  Reflect.set(observed.value.result, "caller_edit", "must not enter replay");
+
+  const replayed = await session.execute("inspect_managed_artifact", {});
+  if (!replayed.ok) throw replayed.error;
+  expect(replayed.value.evidenceId).toBe(observed.value.evidenceId);
+  expect(replayed.value.result).toEqual(expected);
+  expect(session.evidenceById(observed.value.evidenceId)).toEqual(historical);
+  const snapshot = session.exportAnalysisSnapshot();
+  if (!snapshot.ok) throw snapshot.error;
+  const snapshotPath = join(directory, "analysis.json");
+  const written = await session.writeAnalysisSnapshot(
+    snapshot.value,
+    snapshotPath,
+    false,
+  );
+  if (!written.ok) throw written.error;
+  const restored = await readAnalysisSnapshot(snapshotPath);
+  if (!restored.ok) throw restored.error;
+  expect(restored.value.entries[0]?.execution.result).toEqual(expected);
+  expect(restored.value.evidence_bundle.records).toContainEqual(historical);
+});
+
 it("reruns ambiguous imported observations without changing their historical Evidence", async () => {
   const directory = await createTestTempDirectory("rea-snapshot-provenance-");
   const path = join(directory, "application.exe");