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.
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.
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.
Open-source, DIY Bitcoin signing device built from commodity hardware. Designed for air-gapped seed generation, transaction signing, and multisig coordination without trusting proprietary hardware.
Sparrow Wallet is a desktop Bitcoin wallet focused on privacy, security, and flexibility. It supports single-sig and multisig setups and is designed for users who want full control over their coins and connections.
Open-source DIY multisig coordinator for Bitcoin. Runs as a desktop application with optional hardware wallet integration.
Collaborative custody provider and financial services company focused on bitcoin-native products.
Decision framework for choosing between single-sig, multisig, collaborative custody, and custodial solutions mapped to specific threat models and capability levels.