Bip39 passphrase empty for none ) https://atavi.com/share/xbwf7vz16jgof It is vital that the mnemonic sentences are produced from randomly picked quantities! These figures may be created in a number of alternative ways, that are explained in other articles or blog posts below, like "What exactly is an RNG" and Seed Phrase https://bookmarkfriend.com/story20654287/bip39-tool-github-the-single-best-strategy-to-use-for-bip39-generator-https-dzen-ru-bip39-phrase-com