Why Bold Bitcoin Wallet?
Experience the next generation of Bitcoin security with cutting-edge technology
Multi-Device Security
Use 2 or 3 devices to secure your wallet. Any 2 devices can authorize transactions—resilient even if one device is lost or offline, giving you flexible 2-of-3 protection.
MPC Over Nostr Relays
Coordinate MPC TSS key generation and signing over the internet via Nostr relays, so co-signers can be in different countries yet still create wallets and approve transactions together over a resilient, censorship-resistant transport.
Multi-Address Output Descriptors
Generate and share output descriptors for Legacy, SegWit Native, and SegWit Compatible addresses, with clear copy/share/QR options so other wallets and services can integrate cleanly with your Bold wallet.
No Single Point of Control
One device or backup share alone can’t move your funds. Any 2 of your devices must approve—so a stolen phone or leaked share is harmless.
PSBT Interoperability
Import and sign PSBTs from wallets like Sparrow or Electrum, with a dedicated PSBT screen and transport mode selector. Bold acts as a secure MPC-backed signer over local Wi‑Fi, hotspot, or resilient Nostr relays for flexible multisig workflows.
Seedless Self‑Custody
No paper seeds, no hardware wallets. Back up safely using your trusted apps and stay in full control of your Bitcoin—simple, private, and resilient.
Privacy & Camouflage
Connect to mempool.space or your own self-hosted mempool for private fee estimates and transaction tracking—and on Android, optionally camouflage the app icon so Bold blends into your home screen.
Open Source
Fully open source on GitHub, including a FOSS-friendly build that passes F-Droid requirements. Review the code, verify how it works, and contribute improvements—transparency you can trust.
How It Works
Set up Bold on 2 or 3 devices. Any 2 of them can approve a transaction, giving you flexibility, strong protection if one device is lost or offline, and resilient coordination over local networks or Nostr relays.
Install on 2 or 3 devices
Secure your backups on trusted channels
Approve with any 2 devices (2/3)
HODL with peace of mind
Join Our Community
Connect, contribute, and stay updated with the Bold Bitcoin Wallet ecosystem
X (Twitter)
Follow us for updates
Discord
Join the conversation
GitHub
Contribute to our code
Have questions? Join our Discord community for support and discussions
Travel the World with Peace of Mind
Freedom without compromise. Security without borders.
Picture this:
You're traveling abroad, free from worries about holding your papers, hardware wallets, losing your keys, theft, surveillance, or seizure.
With Bold, your keys are not tied to any device or paper. Set it up once, back up your keyshares, remove the app and go incognito. Restore your keyshares anytime, stay low, control your Bitcoin.
Join thousands of travelers securing their Bitcoin with Bold
Bitcoin Ecosystem
Self-Custody Advocates
Organizations in the Bitcoin ecosystem that share our commitment to self-custody and financial sovereignty
FOSS Self-Custody Ecosystem
PSBT-Compatible Wallets
Free and open-source (FOSS) self-custody Bitcoin wallets that support PSBT for interoperable multisig workflows
Terms & Agreements
Your security and understanding are paramount. Please review the following important information.
Privacy First
- No personal data is collected or shared.
- All crypto actions happen locally encrypted between your devices.
- Public Bitcoin APIs are accessed anonymously.
Your Responsibility
- Secure your devices against malware and threats.
- Keep backup shares safe and private.
- Understand: Lost keys cannot be recovered.
Self Custody Grade
- Bold is public and open-source!
- Provided "as is"—no guarantees of error-free use.
- Developers are not liable for loss or unauthorized access.
By Using Bold, You Agree:
- To use the app lawfully and responsibly.
- To accept the risks of managing your Bitcoin independently.
Important: Bold is self-custody. You are in complete control.