Bip39 Vs Slip39. You would probably then do a primary recovery with a command similar to the one beneath. (This command uses a sample wallet file bunlded with BTCRecover) No, there isn't a technical limit to the size of your respective passphrase. However, for your sake of memorability and practicality, https://getsocialnetwork.com/story4107600/bip39-wallets-https-linktr-ee-bip39-top-guidelines-of-bip39-words