Mnemonic Generator/Validator
Generate and validate BIP39 mnemonic phrases
⚠️
Security Warning
- Never share your mnemonic phrase with anyone
- Store it securely offline (paper wallet, hardware wallet)
- Anyone with your mnemonic can access all your funds
- This demo uses a limited word list - use proper BIP39 library in production
About BIP39: BIP39 is a standard for generating mnemonic phrases (seed phrases) that can be used to derive HD wallets. A 12-word phrase provides 128 bits of entropy, while 24 words provide 256 bits. This demo uses a limited word list for demonstration purposes.
1. What is BIP39?
BIP39 (Bitcoin Improvement Proposal 39) is a standard for generating deterministic wallets using mnemonic phrases. These human-readable words (12 or 24) can be used to derive private keys and addresses.
2. How does it work?
Generation Process
A random entropy is generated, a checksum is calculated, and the result is mapped to words from a 2048-word list. The mnemonic can then be used with a key derivation function (PBKDF2) to generate a seed for HD wallets.
Security
- 12 words = 128 bits of entropy (secure)
- 24 words = 256 bits of entropy (very secure)
- Store mnemonics offline and securely
- Never share or enter on untrusted websites
3. Examples
12-word mnemonic
witch collapse practice feed shame open despair creek road again ice least24-word mnemonic
Used for maximum security, provides 256 bits of entropy