Unchained

Education & Resources

The 10x Security Bitcoin Guide walks a non-coding but tech-savvy audience through setting up bitcoin storage with no single point of failure using multisig. Its premise is that a fault-tolerant setup lets you survive one or more catastrophic mistakes that would be fatal in a single-key system.

Multisig & Collaborative Custody

AnchorWatch pairs its Trident Vault bitcoin custody technology with optional Lloyd's of London insurance. Customers can choose a Flagship model where they hold their own private keys alongside AnchorWatch, or a multi-institution model that distributes keys across three institutions.

Multisig & Collaborative Custody

Bitcoin Keeper is an open-source mobile wallet built around multisig self-custody, developed by BitHyve. It lets users assemble vaults from multiple hardware and software signers while retaining full control of their keys.

Software Wallets

Bitcoin-Safe is free and open-source desktop software for managing bitcoin cold storage wallets, built on the Bitcoin Development Kit. It requires a hardware signer and provides a modern interface for single-signature and multisig cold storage across Windows, macOS and Linux.

Hardware Wallets

Bitkey is a bitcoin-only 2-of-3 multisig wallet combining a hardware device, a mobile app key and a server key, so there is no seed phrase to write down. The design includes built-in inheritance and recovery flows while the owner keeps control of spending.

Software Wallets

BlueWallet is an open-source mobile and desktop bitcoin wallet that includes a Multisig Vault feature alongside standard and watch-only wallets. Keys never leave the user's device, so the vault is fully self-custodial.