ManyKeys on Nostr: You generate an entropy for your master seed phrase, then create a bip32 child seed ...

You generate an entropy for your master seed phrase, then create a bip32 child seed with an index number of your choice, then convert that child seed into a 32bit hex format, and voila, you got yourself an nsec that can be input directly into any bostr client.

If you lose the key, you can restor with by inputting your master seed and with the index number that was chosen.

Like this you just risk the child seed in case if you expose it somehow as one can't get to the master key with the child seed.