Bitcoin Ciphers

Caravan

Online · Nationwide

Caravan is a free and open-source bitcoin multisig coordinator, originally released by Unchained and now maintained as the Caravan FOSS monorepo. It runs in the browser and lets users build and spend from multisig wallets without trusting a hosted service with their keys.

Services

  • Browser-based multisig coordination
  • Open-source wallet construction
  • Hardware wallet signing
  • Multisig address verification

Highlights

  • #multisig
  • #open-source
  • #coordinator

Source: Official website. Last checked 2026-09-18. Spot an error? Tell us.

Nearby and similar

More self-custody tools

All self-custody tools

10x Security Bitcoin Guide

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.

btcguide.github.io

AnchorWatch

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.

anchorwatch.com

Bitcoin Keeper

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.

bitcoinkeeper.app

Bitcoin Safe

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.

bitcoin-safe.org

Bitkey

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.

bitkey.world

BlueWallet

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.

bluewallet.io