Bold Bitcoin Wallet is a self-custody Bitcoin wallet designed to eliminate reliance on seed phrases and hardware wallets. It addresses the risks of single-device security and physical backups by employing multi-device MPC (multi-party computation) technology, allowing users to coordinate key generation and transaction signing across two or three devices. This approach ensures that any two devices can authorize transactions, providing 2-of-3 protection and resilience even if one device is lost or offline.
The wallet leverages Nostr-backed connectivity, enabling co-signers to collaborate securely over the internet, including across borders, using a censorship-resistant transport. Bold supports importing and signing PSBTs (Partially Signed Bitcoin Transactions) from other wallets, with a dedicated PSBT interface and multiple transport modes such as local Wi-Fi, hotspot, or Nostr relays. Users can generate and share multi-address output descriptors for Legacy, Native SegWit, and SegWit Compatible addresses, with options to copy, share, or use QR codes for integration with other wallets and services.
Bold is available on Android, iOS, Mac, F-Droid, and as a Chrome extension. The Chrome extension functions as a desktop companion, allowing users to monitor balances, addresses, and transactions, initiate sends, and co-sign securely with the mobile app via QR codes. The extension does not store private keys or key shares; these remain on the user's mobile devices. space or self-hosted mempool servers for private fee estimates and transaction tracking, and on Android, the option to camouflage the app icon for discretion.
The wallet is fully open source, with its codebase available on GitHub and a FOSS-friendly build that meets F-Droid requirements. No personal data is collected or shared, and all cryptographic actions occur locally between devices. Bold is offered free of charge and provided as-is, with users responsible for securing their devices and backups. The wallet is intended for individuals seeking self-custody and privacy-focused Bitcoin management without dependence on physical keys or centralized services.
In the Crypto & web3 consumer space, Bold Bitcoin Wallet takes a focused approach. It provides secure, seedless, hardware-free Bitcoin wallet management across multiple devices. Bold Bitcoin Wallet is a consumer product aimed at bitcoin users seeking secure, multi-device wallets. The product is available for free. It runs on the web, Android, iOS, and embeddable surfaces.
BoldBitcoinWallet builds and maintains Bold Bitcoin Wallet, and the product first shipped in 2025. Across PulseGate's embedding index, Bold Bitcoin Wallet has few near neighbours, marking it as relatively distinct. Among its 6 catalogued features are seedless wallet, multi-device security, and MPC technology.
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