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It doesn't look like "fact checking". It looks like "citation checking". More popular but wrong opinion will take over less popular but correct one.

Fact checking need a court like system, with judges. Contact me, if you interested. I have lot of real world experience with that.

So this differs from regular citations in that:

1) only primary sources are accepted 2) the claim and primary source must be verified by a community of fact checkers

Definitely happy to chat though, will send you an email!