In 2008, Satoshi Nakamoto essentially solved the infamous computational issue called the “Byzantine generals’ problem” or the “Byzantine Fault.”
Throughout the history of man, people used ledgers to record economic transactions and property ownership. A ledger is often referred to as the “principal book,” and entries can be recorded in stone, parchment, wood, metal, and with software as well. Ledgers were used for centuries, but the shared ledger system became really popular in 1538 when the church kept records.
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