Real adoption? It's tough. I doubt any chain analysis would provide real nsight. Number of merchants would be a valuable indicator. LN nodes and transactions, maybe. Merchant sales volume? BTC map growth? Nostr zap growth. Podcasting 2.0 growth?
LN nodes with non-zero channel balances (to skip all the Umbrel / MyNode installations) would be decent, I think, but probably undersell it quite a bit. I like nostr zap growth -- SN total zaps would be good, too, since there's a real innovation on SN made possible by the entire btc ecosystem.
I wonder if that's gettable through the API? I bet it is.
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