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Book Keeper · A registry for books

Every book deserves a name it never loses.

Owners change. Shelves change. Cities change. The book remains itself. Book Keeper gives each book in your collection its own identity — a portrait, a permanent identifier, a QR code — so that wherever it travels, and whoever keeps it next, its story arrives with it.

Specimen
Book Keeper · Identity Papers LEAF Nº 001
Title
Invisible Cities
Author
Italo Calvino
Minted
15 July 2026 · first shelf, yours
BK-3F7K-92QD Point a camera at it — this one is real. It answers BOOKKEEPER:BK-3F7K-92QD.
The rites of registration

Four small ceremonies, one permanent name

This is the whole system, in the order it happens. A book enters as a photograph and leaves as a citizen of your shelf.

Snap

Photograph the book as it is — on the shelf, in your hand, under whatever lamp is nearest. No studio required.

Enhance

Book Keeper straightens, brightens, and crops the photograph into a proper portrait, and keeps it as the book's official image.

Mint

The book receives a unique identifier and its QR code — identity papers issued once, never reissued, never reused.

Travel

Lend it, gift it, sell it, lose it to a good friend. The identity rides along with the book, keeper after keeper.

Why give a book papers?

Because a book outlives its owners

Imagine one copy, thirty years from now. Every keeper it passes through adds a line to its ledger — and none of them can take the ledger with them when they go.

Invisible Cities — Italo Calvino BK-3F7K-92QD
JUL 2026

Minted, first shelf

You snap it, Book Keeper polishes the portrait, and the book gets its name. From this day it is not "a copy of Invisible Cities" — it is this one.

MAR 2033

Passed to a niece

A birthday gift. She scans the code on the flyleaf and the book introduces itself: where it has lived, who kept it before her, the portrait it was given the day it was named.

OCT 2041

Found in a used bookshop

A stranger pulls it off a dusty shelf, curious about the small code inside the cover. One scan, and fifteen years of history surface — the book never forgot a single keeper.

A future ledger, imagined. The system that writes it is what Book Keeper is becoming.
Try the idea

The minting desk

A taste of the ceremony. Name any book on your shelf and the desk will strike it an identifier and a spine mark — the same title always earns the same name, which is rather the point.

Nothing is saved or sent anywhere — this desk works entirely on your side of the screen. In the full system, minting also issues the scannable QR.

The slip is blank. Name a book, and the desk will do the rest.

Book Keeper · Minting Slip15 · 07 · 2026

Its spine mark — a preview of the identity the full system will bind to a QR code.
Colophon

What this page is

Book Keeper is, today, exactly one static page — no framework, no database, no backend. Deliberately so. The idea gets a home and a face first; the machinery arrives once the idea has settled.

Built for a collector with a wide imagination, who suspects — correctly — that books have inner lives.

The road ahead

From page to registry

  • NowThis page. The vision, the vibe, a working taste of minting.
  • NextThe camera. Snap a cover in the browser and enhance it on-device.
  • ThenReal minting. Scannable QR codes issued per book, saved locally.
  • LaterThe shelf. Your whole collection, each book with its papers in order.