According to this article macOS does do a network request to check the notarization ticket: https://eclecticlight.co/2023/03/09/how-does-ventura-check-an-apps-

According to this article macOS does do a network request to check the notarization ticket: https://eclecticlight.co/2023/03/09/how-does-ventura-check-an-apps-security/ https://eclecticlight.co/2023/03/09/how-does-ventura-check-a... They also check the developer certificate in the OCSP stage. Both of these are mechanisms where apple can effectively lock out developers from having a smooth install experience for their software at their discretion.