Bip39 Standard. Before everything you should retail store it SEPARATELY from the seed. Getting your seed as well as your passphrase in the identical location defeats the purpose of aquiring a passphrase to begin with. No, there isn't a technical limit into the size of one's passphrase. However, for your https://kingbookmark.com/story19204693/bip-39-https-linktr-ee-bip39-top-guidelines-of-bip39-mnemonic