I would like to start a project and need a lot of brainwallets for testing.
With one wallet, you can have many addresses inside to use.
Need a lot of wallets is not common need from normal users.
I have divided a song text in a .txt into 1000 lines. A private key for a brain wallet should be created automatically from each line from the .txt
When you create your wallet, do it in a normal, standard and simple way because it is more helpful and workable for your wallet recovery later. Don't try to complicate steps in wallet creation procedure and mess up your steps for wallet recovery in future.
How to back up a seed phrase?Seed splitting is a bad ideatxt files are not secure formats to store your wallet seed phrases.