Bip39 Seed. Receive the essential variety of COLDCARDs, select Import Current through setup and load exactly the same backup file onto each of these. Give Every COLDCARD its individual passphrase after which you can lock down the seed. Your seed words won't be known to any of the devices and https://socialeweb.com/story5043160/bip39-word-list-https-linktr-ee-bip39-the-best-side-of-bip39