Paper wallet bip39 http://www.mediafire.com/file/uilrjfajg2ami24/pdf-14673-57158.pdf Checksum creation: A checksum is created from this entropy working with SHA-256 hashing, which will help validate the mnemonic's integrity later. Thanks to the cryptographic structure of BIP-39, a weak passphrase doesn't reduce the safety of another wallets or enable expose the seed words. BC Vault https://captainbookmark.com/story20614687/bip39-light-standard-everything-about-bip39-word-list-txt-https-www-youtube-com-channel-ucupxfytj0fb78sq55hu6ocw