nostr:nprofile1qqs97p6umsmpnsnaw6sp4vvr2qm7mcgn3kztnueg5s4yfl4jgnd3ygspp4mhxue69uhkummn9ekx7mqpr3mhxue69uhkummnw3ez6vpj9eukz6mfdphkumn99e3k7mg4dl3y8 how many bitcoins are there in total ?

And how many bitcoins can exist?