For 7.x installation:

ARTIFACTORY: How to find uptime for Artifactory service?

AuthorFullName__c
Venu Reddy
articleNumber
000005201
ft:sourceType
Salesforce
FirstPublishedDate
2022-01-18T14:39:07Z
lastModifiedDate
2024-03-10T07:43:56Z
VersionNumber
3
Look for timestamp on the file artifactory.pid located in the directory: <JFROG_HOME>/app/run
For example:
-rw-r----- 1 artifactory artifactory 5 Jan  5 17:57 artifactory.pid