For that reason, you could accomplish all these operations offline and use added variable parameters decided on manually via the user. Once the seed is made, among the finest storage solutions is offline storage, Maybe on numerous sheets of paper or metallic seed keepers. The use of BIP44 with BIP32 http://edgargvkh682.theburnward.com/from-mnemonics-to-security-understanding-bip39-passphrases-and-their-importance-in-copyright