Bip39 Words. Though there are actually BIP39 wordlists in languages aside from English, it is strongly not advisable to work with non-English words for wallet backups. It would make restoring the wallet challenging or unattainable. No, there isn't a technological limit on the length of one's passphrase. However, for that https://doctorbookmark.com/story19220915/ian-coleman-bip39-https-linktr-ee-bip39-5-essential-elements-for-bip-39