Blockstream Green
Blockstream Green is a mobile and desktop Bitcoin wallet with optional 2FA multisig and hardware wallet integration.
Blockstream Green is a mobile and desktop Bitcoin wallet with optional 2FA multisig and hardware wallet integration.
Open-source multisig coordinator by Unchained Capital. Web-based tool for building and managing multisig transactions without installing software.
Fee-based collaborative custody service providing managed multisig vaults and personal security consulting.
ColdCard is a hardware wallet for advanced users prioritizing security verification, air-gapped signing, and open-source principles. Manufactured by Coinkite, widely used in multisig setups.
Side-by-side evaluation of Casa, Unchained, Nunchuk, and other collaborative custody providers covering multisig quorums, key management, recovery flows, and fees.
Comparison of self-custody, multisig, collaborative custody, and custodial solutions with threat-model guidance for choosing the right approach.
Decentralized CoinJoin marketplace. Uses a maker-taker model where liquidity providers (makers) earn fees for providing inputs to CoinJoin transactions, while privacy seekers (takers) pay for the service.
Ledger is a hardware wallet manufacturer using secure element (SE) chips to protect private keys. One of the most widely sold hardware wallets globally.
Deep dive into n-of-m multisignature schemes, hardware wallet coordination, deterministic wallets (BIP-85), and popular multisig coordinators (Sparrow, Nunchuk, CARAVAN).
Mobile-first Bitcoin wallet focused on multisig and collaborative custody. Designed for shared vaults and inheritance planning.
Privacy-focused Bitcoin wallet for Android, built around on-chain transaction privacy. The project was the origin of several privacy tools later adopted across the ecosystem.
Open-source DIY multisig coordinator for Bitcoin. Runs as a desktop application with optional hardware wallet integration.
Trezor is a hardware wallet developed by SatoshiLabs. The first commercial hardware wallet (2014), known for fully open-source firmware.
Collaborative custody provider and financial services company focused on bitcoin-native products.
Privacy-focused Bitcoin desktop wallet with built-in CoinJoin coordination by default. Uses the WabiSabi credential protocol for CoinJoin transactions.
Decision framework for choosing between single-sig, multisig, collaborative custody, and custodial solutions mapped to specific threat models and capability levels.