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fiatjaf
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All I see is a picture of a very nice city. If CBDCs are going to bring that then maybe they're not as bad as I thought.

What are some projects that aim to deliver custom relays with curated content in some form?

It is definitely not green, ordered or beautiful. What kind of marketing is that? A world with CBDCs is chaotic, ugly, painful, vile, dirty. Replace that SimCity picture with Gotham City.

It's good when motive are clear.

Is this @Will 🔮⚡️'s vision of delegated proof-of-work coming to fruition?

I think it is possible to do an adapted version of the Signal protocol using a special kind of relay and a special kind of message. The targeting and querying wouldn't use public keys, but single-use blind tokens that the relay servers wouldn't be able to associate with any entity (unless, of course, to an IP, but we can work around that later) but would still be able to account for, charge money for or use other forms of whitelisting.

This wouldn't be Nostr properly, instead it would be a different protocol, very similar to Nostr, but optimized for private communication. This way Nostr can be left as a public broadcasting service, which is what it excels in.

Anyway, if you have an idea of how this could work please talk about it or do something (as I said, I have a rough idea of how this could work, but it's not fleshed out and I don't give it a very high chance that I am correct on my hypothesis).

Signal still leaks metadata to servers (it even stores your phone number!) but I mean just the encryption and forward-secrecy stuff and whatnot. I just wonder why no one has suggested that. Isn't that the "industry standard"?

Part of the answer (and also why I don't like most of the ideas people have given on how to fix NIP-04) is explained in this commen#[0]ilger: https://github.com/nostr-protocol/nips/pull/306#issuecomment-1447563490

"There is a conflict between the user wanting no metadata, and the relay wanting to know who to charge or whether to bother hosting the event."

"If public relays are gracious enough to host these, there would be an incentive to game that by storing massive data under these events, and then relays would stop hosting these. I cannot see a way out of this pickle."

So I keep seeing suggestions from people on how NIP-04 is bad and how to fix it by tweaking small things. Why wouldn't it be better to copy the Signal protocol though?

Thank you, I didn't know. The BIP doesn't make it clear it is widely used (not that this is a problem anyway).

Oh, you missed 90% of the story. They've abandoned the Sphinx clone over an year ago. Then they were going to use Nostr and they even had code working for a proto-zap spec using keysend. Then they were visited by a committee of Web5 and people involved on the Nostr stuff (Christopher from https://thearcapp.com/ and another guy at least) were fired and they started from scratch.

But since Web5 doesn't seem to actually be finished yet I wonder what they're doing.

Why has Taproot invented "tagged hashes"? Aren't HMACs already tagged hashes?