Bip39 dart https://www.bitsdujour.com/profiles/wWbptt Checksum generation: A checksum is generated from this entropy using SHA-256 hashing, which allows confirm the mnemonic's integrity afterwards. As opposed to standard wallets derived only from a seed phrase, passphrase-safeguarded wallets are hidden from simple sight. They exist in a very sort of cryptographic shadow realm, https://allkindsofsocial.com/story6006934/bip39-gpu-bip39-compatible-wallet-an-overview-https-cutt-ly-uryc5rw7