Online-onlyFingerprint Generator256-char formatDeterministic

Fingerprint Generator Lab

Format preview

fprev05212rQ41... (256 chars)

Generate a Fingerprint

You enter an existing BIP39 mnemonic. That is to say, you enter the 12 words of your wallet to generate the access key to the software. (Nothing is sent to any server)

IdleLength: 0 / 256

Security notice: All information generated on this page is processed locally and is never transmitted to our servers. Do not share any generated keys, phrases, IDs, or activation data with anyone.

Mnemonic (12 words, BIP39-style)

Word count: 0 / 12Lang: English

Tip: paste with Ctrl+V

Passphrase (optional)

BIP39 salt = "mnemonic" + passphrase.

Context / Options (info)

Changing this produces a completely different key.

Prefix (fixed)

Required prefix for BitFlashNode.

HKDF Salt (app namespace)

Keep stable to match your software.

Output charset: base62.

Generated Key

Ready.Validation: --

Crypto Pipeline

Live steps

Idle — waiting for input.

Export

QR: Hidden

QR code from output

Tip: QR updates from your generated key. Use Print QR for a clean paper report.

Quick Verify

Checks prefix, length, and alphanumeric policy (same as your app).

Derivation Stack: base58-separated KDF ladder → salted key-stretch + entropy whitening → context-bound extract/expand (KDF-class) → canonical serialization + constant-time normalization → base-N encoding → fixed-length tail-truncation(256) with collision-resistance guard.