Bip39 Html As an example, go ahead and take word “incident” as an example. Its very first 4 letters are “acci”. Should you look at the BIP39 word list, you will note that no other word starts with “acci”. Any one else who discovers the phrase can steal the bitcoins. https://ok-social.com/story4051547/bip39-swift-the-5-second-trick-for-bip39-word-list