⚠️ Educational Tool Only. Brain wallets are extremely dangerous. This tool demonstrates WHY you should NEVER use them. All computation is client-side only.
🔬 Brain Wallet Generator (Educational)
How Brain Wallets Work:
1. User chooses a memorable passphrase
2. SHA256(passphrase) = private key
3. Private key → Bitcoin address

Why they FAIL:
• Dictionary attacks: 10 billion guesses/sec on GPU
• ALL common phrases already compromised
• Known passwords: 8 char lowercase = cracked in <1 min
• WarpWallet (scrypt) adds PBKDF2 hardening
⚡ Dictionary Attack Simulation
🧠 Common Passphrase Check
Enter a passphrase above to check against known compromised phrases.
📊 Passphrase Entropy Analyzer
💵 Brute-Force Cost Analysis
Enter a passphrase to see cost estimates.
⚖️ Brain Wallet vs BIP39
PropertyBrain WalletBIP39 Mnemonic
Entropy Bits~30-50 bits128-256 bits
Crack Time<1 dayUniverse lifetime
Random SourceHuman brain (biased)CSPRNG (OS)
MemorizableYesWith effort
RecommendedNEVERYES ✓
Known compromised brain wallets include:
"correct horse battery staple" — drained within seconds of funding
"this is my passphrase" — $2.3M drained in 2017
"to be or not to be" — Famous Shakespeare quotes compromised
Any dictionary word, quote, or common phrase is COMPROMISED.
📜 Famous Brain Wallet Hacks
🔴 2017 — "this is my passphrase"
A Bitcoin brain wallet with passphrase "this is my passphrase" was drained of $2.3 million within hours of being posted online. The passphrase was too simple and easily cracked.
🔴 2015 — Correct Horse Battery Staple
The famous XKCD comic passphrase "correct horse battery staple" was used as a brain wallet. Despite being 4 random words, it was cracked and drained in under 24 hours because it was well-known.
🔴 2018 — Shakespeare Quotes
Multiple brain wallets using Shakespeare quotes ("to be or not to be", "all the world's a stage") were systematically drained. Attackers used quote databases to brute-force these wallets.