⚠️ SECURITY WARNING: This tool works 100% offline in your browser. Never enter a real seed phrase on any online tool. For maximum security, use this page offline (disconnect internet first). Your seed phrase controls all your crypto funds.
🔍 Mnemonic Seed Phrase Validator
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Word Count
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Validation Status
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Entropy Bits
Word Analysis
Phrase Details
🔤 BIP39 Word Lookup
🔧 Word Correction Suggestions
📋 BIP39 English Wordlist (2048 words)
📚 BIP39 Mnemonic Guide
What is a BIP39 Mnemonic?
A mnemonic phrase is a human-readable representation of your crypto wallet's private key. It follows BIP39 standard (Bitcoin Improvement Proposal 39).
PHRASE LENGTHS
12 words → 128 bits entropy 15 words → 160 bits entropy 18 words → 192 bits entropy 21 words → 224 bits entropy 24 words → 256 bits entropy (most secure)
⚠️ SECURITY RULES
🔴 Never share with anyone 🔴 Never enter online 🔴 Write on paper, store securely 🔴 Never take photos/screenshots 🔴 Use hardware wallet for best security