Guides · For Writers

What an ISBN Is, and Why the Name on It Matters

An ISBN (International Standard Book Number) is a 13-digit number that identifies one specific edition of one book. Bookshops, libraries and online stores use it to find, order and sell your book.

One book, several ISBNs

Each format needs its own ISBN. A paperback, a hardcover and an ebook of the same book are three different products, so they usually carry three different numbers. A revised edition with significant changes also gets a new one.

How ISBNs work in India

In India, ISBNs are allotted free of charge by the national ISBN agency. Publishers register with the agency and receive numbers for the books they publish. Individual authors can also apply as self-publishers.

The publisher of record

Every ISBN is registered against a publisher. Whoever holds that registration is the book's publisher of record, the name that appears in the book's listing data across stores and catalogues. Some self-publishing platforms issue the ISBN under their own name, so your book sits in their catalogue as their title. That is not necessarily wrong, but you should know it before you sign.

Why it matters later

Once a book is in distribution under an ISBN, that number generally cannot be transferred to a different publisher. If you later move your book elsewhere, you usually need a new ISBN and a new listing, which means starting again on reviews and search visibility.

How we handle it

Every book published through our Imprint, Edition and Select tiers carries the Ashvattha Press ISBN, and we remain its publisher of record. We do not issue your book under someone else's registration.