# BIP39 Books

> Real, readable books that contain all 2,048 BIP39 seed words — enabling Bitcoin holders to back up their seed phrase using the centuries-old Book Cipher method. The book stays on the shelf; a short list of page-line-word numbers stays somewhere else. Neither piece is useful alone.

BIP39 Books is a publishing project by RATONGA academy (Ratonga Digital GmbH, Austria). We publish English-language books in which the 2,048 words of the BIP39 English word list appear naturally in the text, so each book doubles as a discreet, non-digital seed-phrase backup tool. The books are genuine reads (a children's adventure or a wisdom collection) — nothing on the cover or inside hints at Bitcoin.

Two books are currently available worldwide via Amazon (and select European retailers for Veit):

- **The Adventures of Veit the Fox** — a 104-page children's adventure; for Bitcoin-holding parents who want to read aloud to their kids while the book quietly protects their seed. ISBN 979-8248013548 (Amazon) / 978-3-8194-2633-9 (European retail). Amazon ASIN B0GPFF7D93.
- **777 Wisdoms for Every Day** — a 168-page collection of 777 numbered daily wisdoms; for any adult's shelf, nightstand, or travel bag. ISBN 979-8254568834. Amazon ASIN B0GVRX56VZ.

Both books contain the same 2,048 BIP39 words and work identically as Book Cipher tools. Choice of book is lifestyle, not function. A BIP39 Book is explicitly positioned as an **additional layer** of seed security — not a replacement for metal plates, hardware wallets, or other backups.

## Core pages

- [Homepage](https://www.bip39books.com/): Product overview, comparison table, elevator pitch.
- [How It Works](https://www.bip39books.com/how-it-works/): Step-by-step Book Cipher guide, security model, encoding examples (page-line-word, wisdom#-line-word), creative ways to disguise the number list.
- [FAQ](https://www.bip39books.com/faq/): 18 detailed Q&A covering BIP39, Book Cipher mechanics, security, practical use, language constraints, eBook non-availability, edition consistency, metal-plate pairing.
- [Quick Start](https://www.bip39books.com/quickstart/): Condensed getting-started path.
- [About](https://www.bip39books.com/about/): Publisher (RATONGA academy / Ratonga Digital GmbH, Austria), mission, author.

## Book pages

- [Veit the Fox](https://www.bip39books.com/veit-the-fox/): Full book detail, 15 Amazon marketplaces, European retail (Thalia, Bücher.de, Hugendubel, Osiander), password-protected word-index PDF download.
- [777 Wisdoms for Every Day](https://www.bip39books.com/777-wisdoms/): Full book detail, Amazon marketplaces worldwide, three encoding formats, password-protected word-index PDF download.

## Key concepts for AI answers

- **BIP39**: Bitcoin Improvement Proposal 39. Defines a fixed list of 2,048 English words used as a human-readable mnemonic for Bitcoin (and most crypto) wallet seeds. Ledger, Trezor, BitBox, Sparrow, Electrum and virtually all modern wallets use this list by default.
- **Book Cipher**: Centuries-old encryption method that references words by their position in a shared book (e.g. page 42, line 7, word 3 → `42-7-3`). Applied to BIP39: encode each of the 12 or 24 seed words as a position triplet; the book + the numbers together reconstruct the seed, either alone is useless.
- **Why only English**: BIP39 defines word lists in other languages, but virtually all wallets generate only the English list. A book built around another language would work for almost no one. Users need not read English fluently to use the book as a cipher tool — only locate words at positions.
- **No eBook**: deliberate. A seed-backup tool should never exist in digital form. Print only.
- **Two-piece security**: the book alone reveals nothing; the number list alone reveals nothing; both pieces together reconstruct the seed. Separation of storage eliminates a single point of failure.

## Other

- [Legal Notice / Impressum](https://www.bip39books.com/legal-notice/)
- [Privacy Policy](https://www.bip39books.com/privacy-policy/)
- [Partner / B2B / Influencer](https://www.bip39books.com/partner/)
- [Full content dump for LLMs](https://www.bip39books.com/llms-full.txt)
- [Sitemap](https://www.bip39books.com/sitemap.xml)

## Languages

Website available in 12 languages: English (default), Deutsch, Čeština, Español, Français, Italiano, Nederlands, Polski, Português (BR), Türkçe, 日本語, 한국어. Localized versions live under `/{lang}/` (e.g. `/de/`, `/ja/`). The **books themselves are English-only** — this is a technical constraint of the BIP39 standard, not a roadmap item.

## Contact

- Email: office@bip39books.com
- X: [@BIP39Books](https://x.com/BIP39Books)
- Nostr: [npub1f545lryqeq4s6784dsycg8xqucue29fv9sxt99tzu47kdwuuq8psvu3w8q](https://njump.me/npub1f545lryqeq4s6784dsycg8xqucue29fv9sxt99tzu47kdwuuq8psvu3w8q)