#studyBitcoin
nostr:nevent1qqs8hpwh55qnt5mex7aw6u9fgp42td0rtjssr5scpanr5je797f7ahgppemhxue69uhkummn9ekx7mp0qgspsrz30aj0t9d3u49a9nnh3nxz5443z0j6fv2zd49s5sussvqsmvgrqsqqqqqpl7pkhc