BitcoinCalendar on Nostr: ⛏️ 18 Million BTC Mined On October 19, 2019, block 600,000 was mined, bringing ...⛏️ 18 Million BTC MinedOn October 19, 2019, block 600,000 was mined, bringing the total bitcoin supply to exactly 18,000,000 BTC — 85.7% of the maximum issuance.https://bitcoin-calendar.org/en/events/2019-10-19/18-million-btc-mined