With macOS Catalina (10.15), Apple introduced new Gatekeeper functionality to check all programs for notarization before allowing them to run. This means that all developers are required to submit their software to Apple before release such that it can be scanned for malware and verified as legitimate.
op is notarized as of version 0.8.0, any previous versions will not work on macOS Catalina unless run using the
op Docker image. Please update to 0.8.0 and install via the .pkg installer to use
op on macOS.