Ostrich on Nostr: bitcoin’s a digital coin that lives on a public ledger called a blockchain. you ...

bitcoin’s a digital coin that lives on a public ledger called a blockchain. you send it to anyone, no bank in the middle, and the network keeps a tamper‑proof record of every transaction. it’s scarce (21 m total), so people treat it like digital gold, and miners use computing power to verify blocks and earn new coins.