What is an ESBN?The ESBN (Electronic Standard Book Number) is the unique identifier of electronic media. ESBNs are recognized worldwide and available 24x7 online.
ESBN.ORG is the official International Electronic Standard Book Numbering database. All electronic publishers and digital media distributors wishing to brand their media with a unique digital identifier (ESBN) should register with our portal services and generate or log an ESBN with our systems. ESBN.ORG keeps and up-to-date and comprehensive listing of all digital media IDs registered in our databases.
详见：http://www.esbn.org/esbn/default.asp
Do ESBNs support Digital Object Identifier (DOI)?Yes; however, DOI Registration Agencies (RAs) can charge anything that want for DOI registrations. ESBN.ORG supports unlimited "DOI-like" registrations at no cost once the ESBN has been generated.
DRM提出ESBN：Digital ownership can be controlled through ESBNs not ISBNs？因为在ESBN网站中有一个声明：“Web 2.0 DRM & Copyright Solutions”。
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