It doesn't have to be the Bitcoin blockchain and doesn't need to be mirrored on 100s of machines. As long as it is transparent, query/browsable and mirrored on

It doesn't have to be the Bitcoin blockchain and doesn't need to be mirrored on 100s of machines. As long as it is transparent, query/browsable and mirrored on a few machines for authenticity it will be enough to protect against moderators having too much unscrupulous biased money/profit based power.