To be honest, the users I meet at Nostr now all know what sats are. The users who join Nostr have been patiently served by Bitcoin users. The reality is that Nostr’s current users do not have tens of millions of daily active users, but only tens of thousands of daily active users.

If someone is willing, they can provide free NIP certification. Whether it is free or paid verification, operators can refuse spam certification. This can avoid malicious attacks. The problem here is not the high or low cost, but the need for an economic incentive mechanism to encourage NIP05 operators to operate for a long time.

We can put a NIP05 filter button in the message notification bar. It can be used normally and left to the user to decide.
 

 Spammer will just spin up their own nip5, while majority of users without a nostr address are cut out from conversation. This is a win for the spammer. 

The default nostr experience should not be “you have to register an address to get your word out”. This is excessive and unnecessary when a client can simply show you notes only within your network (also requires users to follow others, and not an idea solution on its own). I don’t know what the best solution looks like yet, but if we enable something like “join with friends” where you automatically follow some suggested (by your referrer) users, wot starts working for you. 

Nip5 filtering would work fine for something like Ditto. 

 If spammers create their own NIP05, it will be a good thing for spam filtering. Filtering spam will become easier. NIP05 is only an effective solution when facing a large-scale spam attack. But it is not the only way. But we need to provide users with a tool or button to solve spam now. 

WOT can only see the messages and conversations of the people you follow and the people you follow. This will only form a private space, and you cannot receive messages from new users.