In quickly ... emphasize quickly ... looking at this ... seems to have to do with the way records were collected in Wisconson before 1907. They were voluntarily submitted by families, in other words self-reported.
Therefore the state calls them "uncertified." This law began as a banking and financial services law having something to do with using, or not using, uncertified birth certificates for identification in banking.
Then it got ammended ... and ammended ... and ammended, until I cannot actually tell what it means. I did write to both Wisconson Senators' offices to ask though.
I refuse to believe Wisconson is going to jail anyone for putting a copy of their great-grandmother's birth certificate on Wikitree!
Will let you all know if they answer.