Military-grade cryptographic backup. The same mathematics protecting nuclear launch codes.
Lose parts of your key. Keep your funds.
Traditional seed phrase backups have fatal single points of failure:
Seed Vault uses Shamir Secret Sharing to split your key mathematically:
INSTRUCTIONS: SELECT 3 SHARES TO RECONSTRUCT THE KEY.
CRYPTOGRAPHIC PRINCIPLE: INFORMATION-THEORETIC SECURITY.
2 SHARES = MATHEMATICALLY IMPOSSIBLE TO CRACK.
Scenario: Your house burns down destroying Share #1.
Outcome: You still have 4 shares distributed elsewhere. You only need 3. Your funds are safe.
Scenario: Distribute shares to Spouse, Lawyer, and Safety Deposit Box.
Outcome: No single person can access funds while you are alive. Upon death, they combine shares.
Scenario: A thief breaks into your safe and steals Share #1.
Outcome: The share is mathematically useless on its own. It reveals ZERO information about your seed.
| Method | Fire Redundancy | Theft Risk | Inheritance |
|---|---|---|---|
| Single Paper Copy | None (Lost forever) | High (1 copy = Theft) | Impossible |
| Multiple Paper Copies | Good | Critical (More attack vectors) | Dangerous |
| Manual Split (Half/Half) | None (Lose 1 = Lost) | Medium (Half phrase exposed) | Difficult |
| SEED VAULT (3-of-5) | Excellent (Lose 2 OK) | Zero (Need 3 to steal) | Native Support |
