Discreet Bitcoin Seed Backup with a Book

A Bitcoin seed book is a printed book that contains all 2,048 BIP39 seed words, used with the centuries-old book cipher method to back up a wallet's recovery phrase on paper. Instead of writing down the seed phrase itself, you record where each word sits in the book — its page, line, and word position — as a short list of numbers. Those numbers are meaningless without the exact book, and the book looks like an ordinary read on a shelf. BIP39 Books publishes two: Veit the Fox (104 pages) and 777 Wisdoms for Every Day (168 pages).

A book cipher splits the secret into two parts that are useless apart. The book holds every possible BIP39 word; a separately stored number list points to them. Someone who finds only the book sees a story; someone who finds only the numbers sees a meaningless sequence. Reconstructing the seed phrase needs both pieces plus your encoding scheme, so keeping them in different places adds an offline, non-digital layer to your backup.

No. A BIP39 book adds a layer — it does not replace your existing backups. Its strengths are a non-digital attack surface, discretion, and low cost, which complement metal plates, hardware wallets, and steel seed storage. Most people use a book cipher alongside their other backups, not instead of them.

Both BIP39 Books contain all 2,048 BIP39 words and work identically. Veit the Fox is a 104-page story that blends in on a family shelf. 777 Wisdoms for Every Day is a 168-page collection that suits any adult bookshelf, nightstand, or travel bag. The encoding method and security are the same; the choice is which book fits your life.

Yes. The book cipher encodes the standard BIP39 mnemonic, so it works with any BIP39-compatible wallet — Bitcoin and many other cryptocurrencies. The book never touches your wallet; you simply use it to encode, and later decode, the same recovery phrase your wallet already uses.