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Re:Chrome’s address bar will use https:// by default by jamespharaoh on Tuesday March 23, 2021 @03:39PM (#26559418)
You absolutely can get a certificate for an IP address. Clients should verify them based on the common name, and a subject alternative name has various field types including IP address.

A quick Google search shows various certificate authorities who will issue certificates for IP addresses.

Re:Chrome’s address bar will use https:// by default by cma on Wednesday March 24, 2021 @02:50AM (#26564250)