Electronic Standard Book Number (ESBN) is the unique identifier of electronic content and media. ESBNs are recognized worldwide by electronic publishing companies and electronic content providers. ESBNs are simple and quick to generate and serve as branded identifier or copyright for individuals or companies developing electronic content and media.
ESBNs are assigned and managed by ESBN.ORG. Media IDs can be manually requested or dynamically generated using web service calls by registered ESBN members. Learn More >>
(via blog Letras Com Garfos)