Why We're Open-Sourcing the MPC Behind Bron
Why we open-sourced the MPC library powering Bron — and what that means for the future of self-custody and auditable cryptographic infrastructure.
Secure and Private
by Design
Built on Layers of Relentless Protection
Bron is built with dozens of carefully designed protections that may seem small on their own, but together deliver something critical in crypto: true peace of mind.
Biometric Signing
Every transaction in Bron requires biometric authorization. Even if your device is compromised or unlocked, transactions cannot be signed without your biometric confirmation. The signing shard is encrypted with your biometrics, and you can enable 2-Factor Authentication for extra protection.
Get startedInterface-Level Protection
Privacy off-chain is just as important. Bron offers hidden accounts secured by a PIN. Once hidden, the account leaves no trace in the interface and is revealed only by entering the correct PIN in the search bar. Its transactions appear as external until the account is revealed.
Protection under
duress
Hidden accounts enable plausible deniability against physical threats, keeping core assets protected. Forgotten PINs can be reset with a 24-hour delay; even if forced, only a countdown starts. The system does not indicate whether hidden accounts exist.
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Blockchain-Level
Protection
By integrating the Zama privacy standard, Bron provides users with tools to manage the on-chain visibility of their assets on blockchain explorers. With Shield and Unshield powered by Fully Homomorphic Encryption, balances and transfers are encrypted on-chain, reducing the risk of targeted theft, extortion, and unwanted attention.
Dust Protection
Attackers sometimes send tiny "dust" transactions to trick you into copying the wrong address. Bron hides dust by default to keep your history clean and reduce mistakes — you should still always verify addresses before sending funds.
Get startedPermission Safety
All DeFi permissions you've granted are tracked automatically inside your wallet. You can clearly see which protocols have access to your funds, what kind of access they have, and revoke any permission instantly — no external tools, no guesswork.
Get started2-Factor Authentication
If that weren't enough, you have the option of adding another layer of security with Two Factor Authentication. While not strictly necessary, this feature can be enabled easily in your Bron wallet settings, if desired.
Questions? 24/7
Human Support
Bron provides real human support via secure in-app chat. Our team is available 24/7 and responds within minutes — for help with Bron.
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FAQ
- No. Bron uses passkeys only — and passkeys are far more secure than passwords: they can’t be guessed, reused, leaked in a data breach, or handed over to a scam or phishing site. You sign in with your device’s passkey, and every transaction additionally requires your biometric confirmation.
- No. Every transaction you sign requires your biometric authorization, and the signing shard itself is encrypted with your biometrics. Even on an unlocked or compromised device, a transaction is designed so that it cannot be signed without your biometric confirmation. Any AI agent you enable acts only within the limits and approval rules you set.
- Yes. Bron applies time-locks to high-risk, hard-to-reverse actions — such as resetting a forgotten PIN or initiating account recovery — so a forced or unauthorised attempt only starts a countdown instead of taking effect immediately. That delay gives you a window to notice and stop it.
- Yes. Bron provides real human support through secure in-app chat, available 24/7 and typically responding within minutes.
- No. Bron is a self-custodial wallet that does not require user identification, and it does not collect or store your personal information. Some features — such as fiat on- and off-ramps — do require KYC, which is handled by third-party licensed providers, not by Bron.
- Yes. By integrating the Zama privacy standard, Bron gives you tools to manage the on-chain visibility of your assets. With the Shield and Unshield functions, powered by Fully Homomorphic Encryption, balances and transfers are encrypted on-chain, reducing the risk of targeted theft, extortion, and unwanted attention.
- Hidden accounts enable plausible deniability under duress, keeping core assets out of view. The system never indicates whether hidden accounts exist, and even a forced PIN reset only starts a 24-hour countdown rather than granting immediate access. These privacy features are intended for personal security against theft, extortion, and coercion.
- Fully Homomorphic Encryption (FHE) allows data to stay encrypted even while it is used on-chain. Bron applies it through the Zama privacy standard so your balances and transfers can be shielded on blockchain explorers without leaving your self-custodial control. All this complexity is handled under the hood and delivered through the simple Shield and Unshield functions — so you do not need to be an engineer to manage your on-chain privacy.
- You can revoke any DeFi permission instantly from within the wallet. Because approvals are tracked automatically, there’s no need for separate third-party revoke tools or technical know-how. You can clearly see which protocols have access to your assets and what kind of access they hold under Spending Caps function inside Bron and revoke access there.
- Yes. Bron lets you connect to DeFi protocols while keeping full visibility and control over every permission you grant — you sign each interaction, and the protocol settles on-chain.
Curious to
delve further?
Bron wiki Insights
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A POA you do not recall issuing
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