Definitely and interesting thought experiment.

On the nostr side I think each zap-like would produce 2 notes (kind 9734,9735 per NIP-57). Today likes (reactions) are a single note (kind 7, NIP-25). So if I’m interpreting the NIPs correctly we’d see double the notes if we moved to zap-likes as specified today.

On the lightning side I’d be surprised if there was much issue. We should be able to scale an invoice service backed by a database of small transactions to well over 5k ops/day.

What do you think?

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Once your node's database is full of that many ln invoices, especially on cheap hardware, it will get so slow to query over time.

I also think centralized services like WoS will likely put in minimums soon.

Right now if your node is on AWS and you're using a serverless DB, 1 sat does not cover the read and write cost of inserting that row in the dB.

Our zapping on nostr will help LN solutions and centralized services to get better. They gonna have to learn fast…