A team of bitcoiners with a passion for security

Things we work on

Revault

A complete, sovereign and open-source institutional custody solution using Bitcoin smart contracts.

Liana

A modern day to day bitcoin wallet including inheritance solutions, safer backups, and safer business multisig with recovery features.

Our store

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Both a physical location where we help people and companies with disaster recovery, and an online store providing products and services.

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.

Our musings

Bitcoin

Liana

Liana 1.0 release

Announcing the 1.0 release of Liana

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Bitcoin

Security

Ledger

Ledger vulnerability disclosure

Disclosing a vulnerability in Ledger's Bitcoin application implementation of Miniscript

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Bitcoin

Liana

Liana fourth release

Announcing the fourth release of Liana with multi-recovery support

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