Computers running particular software — the “miners” — inscribe transactions in an unlimited digital ledger. These blocks are identified, collectively, because the “blockchain.” But the computational strategy of mining for bitcoins may be arduous, with thousands of miners competing concurrently. Bitcoin is the digital cryptocurrency that racked up headlines with its meteoric rise in worth a few years again after which its equally breathtaking decline, and it is another technology made in style by anonymity. It cracked the $1,000 threshold for the first time on Jan. 1, 2017, topped $19,000 in December of that year after which misplaced about 50 …