How can I verify a channel's earnings before buying?

Ask the seller for screenshots straight from their YouTube Studio Analytics dashboard — revenue, views, and watch hours together give a clear picture. Screenshots from the AdSense account showing actual monthly payment history add another layer of confirmation. Cross-check the channel's public view count against the reported income to make sure the numbers are internally consistent. If something feels off, or a seller is reluctant to share analytics at all, treat that as a clear warning sign and walk away from the deal.