How it works
Create
Two independent key shares created together. No single private key ever exists.
Store
One share in your browser, one on the server. Both encrypted.
Sign
Both shares cooperate to sign. No single point of failure.
MPC Signing
Browser
Key Share A
encrypted messages, not keys
Server
Key Share B
The full key never exists — not in the browser, not on the server, not in transit
Supported Chains
Bitcoin
XRP
Solana
TON
Features
2-of-2 MPC
Coinbase cb-mpc threshold crypto. No seed phrases.
Self-Custodial
Server never sees your full key. Export anytime.
Policy Engine
Spending limits, whitelists, 24h cooling. GoPlus fraud check.
Passkey Auth
Biometrics or anonymous login. No passwords.
Recovery Mode
Export both shares. Sign offline anytime.
Expert Mode
UTXO selection, RBF, nonce, sign-only, custom RPC, raw messages.
Why kexify
vs. MetaMask
Single key in browser. One breach = everything gone. kexify uses two independent key shares — no single point of failure.
vs. Fireblocks
Enterprise MPC, enterprise pricing. kexify brings the same threshold cryptography to individuals — free, no subscription, no ads.
vs. Custodial Wallets
Not your keys, not your crypto. kexify is self-custodial — export both shares and go fully offline anytime.
Open Source
Built on Coinbase cb-mpc (our fork). Frontend source on GitHub.
Built on audited Coinbase cb-mpc cryptography
Try kexify