Things we work on

Let's talk

We are always happy to chat if you want to work with us, or have a problem that needs solving. We focus on security, with a strong emphasis on open source.

hello@wizardsardine.com

Our musings

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Bitcoin
Backups
History

State of the art for Bitcoin wallet backups

A historical inquiry on wallet backups since the very first Bitcoin release to the latest most featureful wallets.

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Bitcoin
Custody

What does bitcoin custody look like today?

Secure bitcoin private key management is now critical for many private businesses, publicly-traded companies and individuals across the world who hold bitcoin. As of today, and considering a 75% market downturn since its all time high, roughly $405 billion worth of bitcoin is held in various ways.

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Bitcoin
Liana

Announcing Liana

Today we are releasing the first version of Liana, a simple self-custody solution that puts the emphasis on protecting against loss without degrading security.

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