monitor the selling of an epub
how can i know if my epub was sold without my knowledge ?
suppose i created an epub,
and i sell it an e-book store,
how can i know if my e-book was sold ?
maybe the store keeps 100% of the sell to themselves and they don't tell me that they sold it.
another option to this problem -
lets assume that there is an unfamiliar e-book store (which does NOT have a contract with me)
they buy one book from me, so now they have the epub, they change it a little (removing the buyer info from this copy)
and then they start to sell this epub by themselves, and again, keep 100% of the profit to themselves.
can i know about it someway,
can i protect my epub is some way ?