To test a single phrase, Cantrell needed to generate a seed from the mnemonic, master private key from the seed and an address from the master private key. There is a limited list of 2048 words such phrases could contain -but that doesn’t make hacking a Bitcoin wallet much easier. He wrote in his Medium post that, with eight words, there would be “roughly 1.1 trillion possible mnemonics,” that needed to be checked.Ī mnemonic is a 12 or 24-word seed phrase for a Bitcoin private key that grants full access to the funds that are kept on it. Hacking the Bitcoin addressīefore the eighth word was published, Cantrell started preparing. With just eight words, Cantrell was able to guess the remaining words, find the right combination and unlock the wallet. This was an attempt to prevent someone from brute-forcing the address open (by continuously guessing words until a combination worked). However, Milne planned to post the last three or four words in one go. I hope to pay-it-forward with a contest of my own that can't be won by software, details to come soon! I just published an article on how I checked over 1 trillion mnemonics in 30 hours to win 1 Bitcoin giveaway.
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