Keys that never leave
Your 24-word recovery phrase is generated offline and sealed in your device secure enclave. Our servers never receive it, so there is nothing on our side to leak, subpoena, or misplace.
Self-custody wallet
Only one key opens Vault9. You hold it.
A self-custody wallet that generates and seals your private keys on your own device. No custodian to trust, no exchange that can freeze your balance, no company that can lose it. When Vault9 signs a transaction, it signs with your key, and no one else has a copy.
Keys sealed on-device
Signed locally
Open source, audited
reproducible build 0.9.0 · fingerprint 9F2A C41B 77E0 12E0
Why Vault9
Custody with no one in the middle.
The whole point of crypto was to remove the trusted third party. Vault9 removes it from your wallet too.
Sign exactly what you see
Every transaction is decoded into plain terms before it broadcasts: amount, destination, and network fee, in full. You approve the details in front of you, never a blind signature.
Recover without a middleman
Split your backup into five shards kept by people and places you choose. Restore from any three. No custodian holds a copy, and no single loss can lock you out.
How keys stay yours
Three steps, zero custody.
Nothing about your keys ever depends on our uptime, our goodwill, or our servers staying online.
Step 01
Generate offline
A 24-word seed is created on-device from hardware entropy. It never touches the network.
Step 02
Encrypt on device
Keys are wrapped inside the secure enclave, unlocked only by your passcode or biometrics.
Step 03
Sign locally
Transactions are signed on your device, then broadcast as read-only data. Your keys stay put.
// design principle
The rule was always simple: not your keys, not your coins. Vault9 just takes it literally.
Your keys. Your coins. Your call.
Vault9 is free, open source, and available for iOS, Android, and desktop. Download it, read the code, hold your own keys.