Wizardsardine is a Bitcoin security company founded in 2020 and headquartered in the Azores, Portugal. Comprised of an international team of Bitcoin enthusiasts, their mission is simple yet powerful: "make Bitcoin users sleep better at night"—emphasizing honesty, transparency, and integrity in every product and service.
The company builds advanced Bitcoin-native security tools and wallets with a strong focus on practical self-custody and institutional resilience. Two standout offerings are:
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Revault: A robust custody protocol using Bitcoin smart contracts to enable secure, policy-driven fund delegation. It features high-threshold multisig security, optional manual vetoes, and the flexibility to self-host—providing organizations with sovereignty and complete control without intermediaries.
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Liana: A modern Bitcoin wallet designed with advanced security in mind. It incorporates on-chain timelocks and recovery mechanisms that enable inheritance and loss protection. Users can define primary and recovery keys—with customizable activation conditions—supporting multisig setups, time-locked backups, inheritance flows, and coin-control during recovery. Liana continues evolving, with new releases bringing features such as multiwallet support, SD-card air gap integrations with hardware signers, improved recovery UX, and enhanced transaction exports.
Beyond products, Wizardsardine offers protocol and architecture reviews, code audits, vulnerability disclosures, and operational security assessments. Their team contributes to open-source Bitcoin projects, champions transparent security practices, and fosters responsible disclosure across the ecosystem.
They also offer a “Safety Net” marketplace—a decentralized backup network leveraging third-party custodians (e.g., Hodling in Switzerland)—to provide users with optional, timelocked backup keys stored securely, providing peace of mind without compromising self-sovereignty.
Wizardsardine rounds off its offerings with branded merchandise—humorous sardine-themed swag—and provides professional onboarding, support, and expert guidance for both individuals and businesses seeking a more secure Bitcoin experience.
In essence, Wizardsardine positions itself as a trusted security partner—architecting open-source, self-custody-first solutions that combine strong technical innovation, real-world usability, and ethical transparency.
