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BIP38 Weak Passphrase

Recover the private key of a passphrase-encrypted BIP38 (6P…) key when the passphrase is weak, testing candidates offline in your browser.

Recovers the private key of a passphrase-encrypted BIP38 key (6P…, non-EC-multiply) when the passphrase is weak. Each guess runs scrypt (N=16384) — slow by design, so keep the list focused.

Passphrase candidates — one per line

Instructions:
1. Paste a BIP38 encrypted key (starts with 6P, non-EC-multiply).
2. Add likely passphrases, one per line — each guess runs scrypt N=16384, slow by design.
3. The embedded 4-byte address hash confirms the correct passphrase and reveals the private key.
4. Everything runs locally in your browser.

Educational tool — runs 100% in your browser. BIP38 encrypts a Bitcoin private key under a passphrase (keys start with 6P). If the passphrase is weak, the embedded 4-byte address hash lets anyone confirm guesses offline via scrypt(N=16384) + AES-256. Only test keys you own; scrypt is deliberately slow, so keep candidate lists short.