Your Key Never Exists. Your Assets Always Safe.
DefiShard uses distributed key generation with threshold signatures. Your private key never exists anywhere—not during setup, not during signing, not ever.
The Extension Wallet Crisis
These were all "secure" users who did nothing wrong.
The problem is architectural.
Extension Wallets Are
Single Points of Failure
Over $1 billion lost since 2022. These aren\'t theoretical risks— these are real people who lost everything because their wallet software was compromised.
Ronin Network
March 2022
Slope Wallet
August 2022
LastPass Breach
December 2022
Atomic Wallet
June 2023
Traditional Extension
DefiShard
Bank-Grade Security in
Four Simple Steps
Familiar 2FA experience powered by threshold cryptography
Distributed Key Generation
Install extension and mobile app. Key shares are generated using secret sharing protocols.
The complete private key never exists—not even during setup
Browse DeFi Normally
Connect to any DeFi protocol and create transactions as usual.
No change to your workflow
Scan & Review
Extension generates QR code. Scan with mobile app and review complete transaction details.
See exactly what you're signing
Distributed Signing
Tap to confirm. Both devices engage in threshold signing protocol using zero-knowledge proofs.
The key is NEVER reconstructed
Everything You Need
To Stay Secure
Built with the security-conscious DeFi user in mind
MPC 2-of-2 Security
Threshold signatures with secret sharing and zero-knowledge proofs. Your private key never exists—anywhere, ever.
Mobile Transaction Review
Review every detail on your phone. Catch scams before signing. Screenshot important transactions.
Universal Compatibility
Works with Uniswap, Aave, Compound, and all your favorite DeFi protocols. Support for Ethereum and major EVM chains.
Seamless UX
Quick QR code scanning. Transactions complete in seconds. Familiar 2FA-style workflow you already trust.
Active Protection
Real-time threat detection. Warning system for suspicious transactions. Automatic security updates.
Easy Recovery
Secure backup options and social recovery available. Never lose access to your assets.
How True MPC
Actually Works
Common Misunderstanding
Many people think MPC means "split the key into two parts, then send them back together to sign."
This is incorrect. If the key is ever reassembled (even temporarily), you still have a single point of failure at that moment. Malware could intercept it during reassembly.
Wrong: "Split Key" Signing
Correct: Distributed Signing
The Critical Difference
In distributed signing, the complete private key never exists anywhere—not in memory, not in transit, not even for a microsecond. The signature is produced through cryptographic cooperation between shares.
signature = sign(privateKey, tx)
σ₂ = sign_partial(share2, tx)
signature = combine(σ₁, σ₂)
Secure Your DeFi
Today
Join thousands of users who sleep better knowing their assets are protected by distributed key technology