Bip39 documentation https://andersonsaeu988.iamarrows.com/bip39-generator-online-the-best-devices-for-secure-wallet-creation Checksum generation: A checksum is produced from this entropy employing SHA-256 hashing, which allows verify the mnemonic's integrity later on. Due to the cryptographic layout of BIP-39, a weak passphrase would not lessen the protection of the opposite wallets o... https://socialtechnet.com/story6205101/bip39-cardano-bip39-ian-coleman-for-dummies-https-t-me-bip39-chat