Assertion: certificate's number | /r/HasProperty | same serial
Facets:
Source sentences:
text: Since all certificates issued by a CA must contain unique serial numbers, and since both the precertificate and certificate will have the same serial number, it’s important to make one of them as invalid or not usable, thus the poison extension.
text: A pre-certificate contains the same data as the final certificate and even has the same serial number, but it includes an extra extension, called the poison extension, that makes it unusable.