diff --git a/README.md b/README.md
index 47a1dc4..2d42065 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # DetLab
 
-DetLab is an advanced detection engineering platform for validating, translating, scoring, packaging, and distributing behavioral detections across multiple security backends.
+DetLab is an advanced detection engineering platform for validating, translating, scoring, packaging, distributing, and verifying behavioral detections across multiple security backends.
 
 ## Platform Capabilities
 
@@ -12,72 +12,69 @@ DetLab is an advanced detection engineering platform for validating, translating
 - HTML analytics dashboards
 - Detection pack management
 - Pack registry workflows
+- Pack trust verification
 - Governance reporting
 - CI/CD integration
 
-## Detection Pack Registry
+## Detection Pack Trust Verification
 
-DetLab now supports registry-oriented detection pack workflows.
+DetLab now supports integrity-oriented pack verification workflows.
 
-## Pack Lifecycle
+## Verification Workflow
 
 ```text
-Build -> Publish -> Install -> Validate -> Analyze
+Build -> Publish -> Verify -> Install -> Analyze
 ```
 
-## Supported Workflows
+## Supported Verification Workflows
 
-### Build Detection Pack
+### Verify Detection Pack
 
 ```bash
-detlab pack build packs/windows-core
+detlab pack verify registry/windows-core-1.0.0.tar.gz \
+  --metadata registry/windows-core.json
 ```
 
-Creates:
-- distributable archives
-- checksum metadata
-- semantic version metadata
+Supports:
+- SHA256 verification
+- Registry metadata validation
+- Pack integrity validation
+- Trust-oriented governance workflows
 
-### Publish Detection Pack
+## Example Trust Metadata
 
-```bash
-detlab pack publish packs/windows-core
+```json
+{
+  "name": "windows-core",
+  "version": "1.0.0",
+  "checksum": "sha256-value",
+  "trust": {
+    "verified": true,
+    "algorithm": "sha256"
+  }
+}
 ```
 
-Creates:
-- registry archives
-- registry metadata manifests
-- reusable distributable bundles
+## Detection Pack Registry
 
-### Install Detection Pack
+DetLab supports registry-oriented detection pack workflows.
+
+### Build Detection Pack
 
 ```bash
-detlab pack install windows-core
+detlab pack build packs/windows-core
 ```
 
-Supports:
-- local registry cache
-- reusable deployments
-- portable content workflows
-
-## Registry Metadata Example
+### Publish Detection Pack
 
-```json
-{
-  "name": "windows-core",
-  "version": "1.0.0",
-  "checksum": "sha256-value",
-  "archive": "windows-core-1.0.0.tar.gz"
-}
+```bash
+detlab pack publish packs/windows-core
 ```
 
-## Detection Pack Structure
+### Install Detection Pack
 
-```text
-packs/
-  windows-core/
-    pack.yml
-    detections/
+```bash
+detlab pack install windows-core
 ```
 
 ## Behavioral Detection Example
@@ -113,16 +110,17 @@ sequence:
 - Pack-level reporting
 - Behavioral analytics
 - Executive dashboards
+- Pack integrity verification
 
 ## Long-Term Vision
 
 DetLab is evolving toward:
 
-- community detection ecosystems
-- reusable behavioral detection libraries
 - enterprise detection governance
-- portable detection engineering pipelines
-- threat-informed analytics platforms
+- secure detection distribution ecosystems
+- reusable behavioral detection libraries
+- trusted security content pipelines
+- portable detection engineering platforms
 
 ## License
 
diff --git a/detlab/trust.py b/detlab/trust.py
new file mode 100644
index 0000000..f9b9153
--- /dev/null
+++ b/detlab/trust.py
@@ -0,0 +1,44 @@
+from pathlib import Path
+import json
+
+from detlab.registry import calculate_checksum
+
+
+
+def load_metadata(metadata_path: Path) -> dict:
+    return json.loads(metadata_path.read_text(encoding="utf-8"))
+
+
+
+def verify_checksum(archive_path: Path, expected_checksum: str) -> bool:
+    calculated = calculate_checksum(archive_path)
+    return calculated == expected_checksum
+
+
+
+def verify_pack(archive_path: Path, metadata_path: Path) -> dict:
+    metadata = load_metadata(metadata_path)
+
+    expected_checksum = metadata.get("checksum")
+    verified = verify_checksum(archive_path, expected_checksum)
+
+    return {
+        "name": metadata.get("name"),
+        "version": metadata.get("version"),
+        "verified": verified,
+        "checksum": expected_checksum,
+        "archive": archive_path.name,
+    }
+
+
+
+def generate_trust_metadata(name: str, version: str, checksum: str) -> dict:
+    return {
+        "name": name,
+        "version": version,
+        "checksum": checksum,
+        "trust": {
+            "verified": True,
+            "algorithm": "sha256",
+        },
+    }
diff --git a/tests/test_trust.py b/tests/test_trust.py
new file mode 100644
index 0000000..cdfcfc2
--- /dev/null
+++ b/tests/test_trust.py
@@ -0,0 +1,44 @@
+import json
+from pathlib import Path
+
+from detlab.trust import generate_trust_metadata, verify_checksum, verify_pack
+from detlab.registry import calculate_checksum
+
+
+def test_verify_checksum(tmp_path: Path):
+    archive = tmp_path / "pack.tar.gz"
+    archive.write_text("detlab-pack", encoding="utf-8")
+
+    checksum = calculate_checksum(archive)
+
+    assert verify_checksum(archive, checksum) is True
+
+
+def test_verify_pack(tmp_path: Path):
+    archive = tmp_path / "windows-core-1.0.0.tar.gz"
+    archive.write_text("detlab-pack", encoding="utf-8")
+
+    checksum = calculate_checksum(archive)
+
+    metadata = {
+        "name": "windows-core",
+        "version": "1.0.0",
+        "checksum": checksum,
+        "archive": archive.name,
+    }
+
+    metadata_path = tmp_path / "windows-core.json"
+    metadata_path.write_text(json.dumps(metadata), encoding="utf-8")
+
+    result = verify_pack(archive, metadata_path)
+
+    assert result["verified"] is True
+    assert result["name"] == "windows-core"
+
+
+def test_generate_trust_metadata():
+    metadata = generate_trust_metadata("windows-core", "1.0.0", "abc123")
+
+    assert metadata["name"] == "windows-core"
+    assert metadata["trust"]["algorithm"] == "sha256"
+    assert metadata["trust"]["verified"] is True