Hi, thank you for the reply. I did check the Notary Log, and it did give me more detailed response than the API. However, I don't quite understand why it's failing. Here is the error response I got: "issues": [ { "severity": "error", "code": null, "path": "cariad-vv.dmg/cariad-vv", "message": "The binary is not signed with a valid Developer ID certificate.", "docUrl": "https://developer.apple.com/documentation/security/notarizing_macos_software_before_distribution/resolving_common_notarization_issues#3087721", "architecture": "x86_64" }, { "severity": "error", "code": null, "path": "cariad-vv.dmg/cariad-vv", "message": "The signature does not include a secure timestamp.", "docUrl": "https://developer.apple.com/documentation/security/notarizing_macos_software_before_distribution/resolving_common_notarization_issues#3087733", "architecture": "x86_64" }, { "severity": "error", "code": null, "path": "cariad-vv.dmg/cariad-vv", "message": "The executable does not have the hardened runtime enabled.", "docUrl": "https://developer.apple.com/documentation/security/notarizing_macos_software_before_distribution/resolving_common_notarization_issues#3087724", "architecture": "x86_64" } ] However, I did verify the code, and here is the response /Users/runner/work/1/a/cli/osx-x64/cariad-vv.dmg: valid on disk /Users/runner/work/1/a/cli/osx-x64/cariad-vv.dmg: satisfies its Designated Requirement Display codesign... Executable=/Users/runner/work/1/a/cli/osx-x64/cariad-vv.dmg Identifier=cariad-vv Format=disk image CodeDirectory v=20200 size=297 flags=0x10000(runtime) hashes=1+6 location=embedded Signature size=8974 Timestamp=Feb 22, 2024 at 12:18:19 AM Info.plist=not bound TeamIdentifier=974NQDDRW2 Sealed Resources=none Internal requirements count=1 size=172 I also codesign it with the these 2 options --options runtime --timestamp, which are for secure timestamp and enable the hardened runtime, right? I wonder if I missed any steps. Thank you for the help.