Is #proofofreserves a larp? nostr:nprofile1qqsvf646uxlreajhhsv9tms9u6w7nuzeedaqty38z69cpwyhv89ufcqpzamhxue69uhhyetvv9ujumn0wd68ytnzv9hxgtcvd6gmf made a point that they don't do UTXO management for each individual account because that would be dumb.

So proof of reserves from nostr:nprofile1qqsrtv3u6qkj6a09tnhr3l0wy67g9uw3t57ftqyqpvztpk3wmd6306spz9mhxue69uhkummnw3ezuamfdejj78rkltp or an ETF would really only prove that they own some bitcoin. You'd still have to trust that more than that wasn't sold right?

For the record, I don't use any of them