Bitcoin security experts

Our Projects

Revault

A sovereign Bitcoin Vault architecture for very large organizations and governments. Prototype stage, on hold.

Liana / Liana Business

A state of the art institutional self-custody infrastructure with hosted services, support and SLAs. Insurance and Disaster Recovery enabled.

Business Solutions

Institutional Bitcoin Self-Custody Solutions

We architected and built Revault (Bitcoin Vault), Liana (Bitcoin wallet leverating Miniscript and Timelocks) and the Liana Business infrastructure.

Protocol and Architecture Reviews and Audits

We offer architecture, protocol and code audits for other projects and companies. Our unique expertise lies on Bitcoin layer 1 and Script.

Responsible Vulnerability Disclosures

Our team often find an reports vulnerabilities in Bitcoin software and hardware. We appreciate bug bounties!

Operational Security Advice and Assessments

Mapping risks and threats, suggesting mitigations and giving our opinion on your operational security.

Wizardsardine is a Bitcoin security company. If you have a problem that needs solving and you feel we might be able to help, contact us!

latest articles

Bitcoin

Hardware Wallets

Wizardsardine + Hardware wallets = ❤️

What are hardware wallets and why do we want users to use them.

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Inheritance

Safety Net

Recovery

Liana Business

Managing recovery paths in Liana

Recovery paths are a powerful feature that make bitcoin self-custody with Liana more resilient to failure, loss or change, but they must be properly managed to ensure they work as intended.

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Bitcoin

Timelocks

Liana

Understanding Bitcoin Timelocks: Security Without the Wait

Liana timelocks aren't to lock coins. Instead, we lock recovery conditions.

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