Overview
Book.io is an online bookstore where every ebook and audiobook is a digital asset you actually own. You can buy a title, read it, then resell or gift it later, the way you would with a paperback on a shelf. Authors and publishers earn a share of every sale, including the resales.
The idea started as a question between cofounders Joshua Stone and Ben Illian: what if a digital book worked more like a physical one? They answered it by releasing a copy of the Gutenberg Bible as the first title of its kind on Cardano, and the catalog has since grown into a global storefront serving readers in many countries1. Book.io sits in the media corner of the Cardano ecosystem, and also supports Ethereum, Polygon, Algorand, and Base.
Key Features
- Books you can resell or pass along. Each title is created on a blockchain as a unique digital asset, so you can sell it, gift it, or transfer it the way you would a physical copy. Book.io calls these Decentralized Encrypted Assets, or DEAs2.
- Your copy stays private and portable. The book file is encrypted and split into pieces, then stored across a decentralized network. Your digital asset works as the key, and the reader app uses it to put the file back together for you2.
- A cut of every resale goes to the creator. Code recorded on the blockchain splits each sale between the author or publisher and Book.io, and the same split applies on secondary sales. Creators keep earning when a reader passes the title on3.
- Rewards for readers who finish. Book.io measures real reading time inside its app and feeds that into a loyalty program. Readers who actually finish books earn perks for doing so4.
- Apps for readers and tools for authors. A reader app on iOS, Android, and the web lets you open titles anywhere. A Creator Portal lets authors and small publishers release their own DEAs without writing code5.
What to Expect
The storefront looks closer to a bookstore than a typical NFT marketplace. You can browse by genre, author, format (ebook or audiobook), or by blockchain. Buying a title takes a compatible Cardano wallet, or a wallet for one of the other supported networks if the book lives there. Once the purchase clears, the title shows up in the Book.io reader on iOS, Android, or the web library.
For authors and publishers, Book.io feels closer to a publishing partner than a self-serve minting tool. The team has worked directly with rights holders on collections such as the Gutenberg Bible and the Cardano Foundation's I Can Aiken, released as a 2,000-copy on-chain print run for Cardano Academy3. The Creator Portal opens a lighter version of that same workflow to independent authors.
Book.io has a public footprint that backs up its claims. The Cardano Foundation published a full case study, the project is listed on cardano.org/apps, and its STUFF token is tracked on CoinGecko. The project also received a grant from Project Catalyst Fund 13 to expand publisher onboarding367.
