CHRONOTHÈQUE

Your watches. With a history you can prove.

Chronothèque keeps your collection, follows its value, and turns the history of every piece into verifiable proof.

Coming to the App Store

The collection

Photographs, documents, accessories and service history in a single card. The app speaks your phone’s language.

Value

An estimate for your own market, the change since you bought it, and offers from verified dealers.

Provable history

Every event enters the registry, and once a day the root of all records is anchored in Bitcoin. History cannot be rewritten after the fact — and you can confirm that without us.

Digital passport

A non-transferable token on Base: the passport follows the object, not the account. On a sale it moves to the new owner — two signatures and the serial number checked against the watch itself.

A serial number is not a search query

It is stored as a hash and as ciphertext. Nobody can look up someone else’s watch by serial number — not a stranger, and not us. That is a promise to the owner, not an unfinished feature.