Allow me to shill PoW Pub: https://lab.oak-node.net/powpub

Its a protocol for a "pubkey PoW p2p marketplace". Buyers (clients) can shop for pubkeys with a certain prefix. Sellers (providers) get paid to mine it. Schnorr magic ensures only the client knows the mined private key. Both buyers and sellers need their own LND. Entire trade is coordinated via nostr messages.

I imagine a nostr service provider could offer this (as a mining provider) as an extra source of revenue. Thats especially interesting for relay operators that set a minimum pubkey PoW for their relays, because users who want to sign up will surely ask "how do I get a pubkey with PoW".

Ultra-experimental and have only used it myself as a proof-of-concept. Still looking for the first service provider to offer this :)

cc #[1]