Bip39 first 4 letters http://www.mediafire.com/file/uilrjfajg2ami24/pdf-14673-57158.pdf D'CENT Biometric Wallet - A hardware wallet using a biometric authentication function, supporting BIP39 seed phrases and giving an additional layer of safety. This additional complexity enhances the danger of misplacing the passphrase, and so losing your copyright. The conversion involving binary d... https://1001bookmarks.com/story20101985/bip39-recovery-phrase-indicators-on-bip39-standard-you-should-know-https-x-com-tundra838554