Bip39 is not defined https://bip39marco.mystrikingly.com/ Picking out New Wallet when starting a COLDCARD® generates 24 seed words that you should history. Those people words let you Recuperate your Bitcoin cash If the wallet is misplaced, stolen, or ruined. Your seed words originate from a list of 2048 words specified by https://mariobrpx591.cavandoragh.org/getting-a-bip39-phrase-in-python-a-comprehensive-tutorial