In nostr can you have passphrases attached to key that access different accounts? Then make in client so I can just hop through different accounts by typing in passphrases once logged into my key. Am I thinking about this incorrectly?

Buy the fucking dip! #bitcoin

I keep looking at the marketplace on amethyst thinking wow! How cool! I feel like it is only a matter of time before we see services In certain areas pop up in the marketplace here. Like food delivery or ride services. Would be nice to have categories for area if people wanted to post it. #bitcoin #future

Who will be the first to make lottery posts. All sats zap'd would go to a winner chosen at random that donated towards the zap'd pool for the post. Is this possible?