Originally Posted by John F
As far as regular ebook sales, how do Amazon, Barnes & Noble, ... provide proof to authors that sales are what they say they are?
Authors put an audit clause in their contract with the publisher, allowing them some access to the publisher's records, and publishers probably put an audit clause in their contract with wholesalers and Amazon. But googling:
book sales audit
I'm getting the idea that such audits are not routinely conducted.
Really massive fraud might be detected in the financial auditing required of publicly held companies.
I'm going to guess that such crimes as you suggest are almost always deterred by fear of prison. At least, that is my hope.