@thecanine@twtxt.net that definition could be outdated, you’ll have to read the licence to know what rights are you geting when you pay for something in a traditional platform or on a ‘crypto contract’

For instance you could copy a book on epub format, but you shouldn’t. And you could just pirate it since is just a bunch of bytes, but maybe you want to legally buy it without DRM.

Sometimes you get rights to sell your current copy, sometimes you own ‘Related rights’, etc. Sadly it’s not a simple regulation but things like Creative Commons is a good starting point to know more about Copyright (US/UK) and author’s rights (Europe, Latam)