Bip39 ledger https://files.fm/u/2eemhhak2q#design BIP85: A newer proposal allowing for the deterministic derivation of a number of BIP39 mnemonic seeds from a learn seed. Thanks to the cryptographic design and style of BIP-39, a weak passphrase will not lessen the protection of one other wallets or support expose the seed words. https://ilovebookmarking.com/story20236128/bip39-entropy-to-mnemonic-bip39-generator-secrets-https-dzen-ru-bip39-phrase-com