Recover a Bither wallet.
Bither is a lightweight Bitcoin wallet for desktop and mobile, with password-encrypted keys.
For a forgotten Bither password when you still have the wallet.
Yes. Bither is one of the formats that reduces to a check-only extract, so the fleet can test passwords against it safely — finding the password never exposes a key that holds funds. GPU-friendly. You pay 15% only if we recover it, and nothing if we don't.
The Bither extract, in detail.
Exactly what the fleet receives for this format — and why finding the password still can't move the funds.
What leaves your machine — and what never does
For a Bither wallet, this is the entire check-only extract the fleet receives. It can test a password, but it can never be turned back into a key that spends.
$bither$ - the last half of the encrypted private key
- 16 bytes of encrypted padding
- the first half of the private key — never sent
- your addresses and balances
The padding has predictable structure that a correct password reproduces. Half a private key cannot be reassembled into a spendable key.
predictable padding $bither$<half-privkey-hex>$<padding-hex> Illustrative and synthetic — placeholder bytes.
Half an encrypted private key plus 16 bytes of padding — never a whole key.
The password unlocks an AES-encrypted private key; only a fragment of it is used for verification.
The padding has predictable structure that a correct password reproduces. Half a private key cannot be reassembled into a spendable key.
$bither$ An open, published format. The agent checks every job matches it before running — so a real wallet can't be disguised as an extract.
See the full security model, or how a recovery works end to end.