Plain English
A passphrase is an optional secret word or sentence you add on top of your 12 or 24-word seed phrase. It creates a completely separate, hidden wallet derived from the same seed. Without the passphrase, that hidden wallet does not exist.
How it actually works
Mathematically, the passphrase mixes into the seed during key derivation, producing a different master key. The same 24 words with passphrase “apple” derives wallet A; with passphrase “orange” derives wallet B; with no passphrase derives wallet C. All three are independent wallets sharing the same backup words.
Hardware wallets like Ledger and Trezor support this natively. It is also called a 25th word, hidden wallet, or plausible deniability feature.
What it means for you
For HNW holders, a passphrase is the standard answer to the “$5 wrench attack” problem (someone forces you to reveal your seed). You give up the seed under duress — they get the visible decoy wallet with a small balance. The real funds, behind the passphrase, remain hidden. The trade-off: lose the passphrase and the real wallet is gone forever, even with the seed.
Will this information be valuable to you?
Already a member? Send this term to your coach inside the community and tell them exactly what you need help with — we will build a plan around it.
New here? Join the membership, become a student, or sit in on the community. Your starting point is one short call.
Educational content only. Not investment, tax, or legal advice.