Do we  really  understand BLOCKCHAINS  and  BITCOINS  ?

Do we  really  understand BLOCKCHAINS  and  BITCOINS  ? Conventional recordings of data in multiple ledgers are slow and inefficient which can be altered retroactively and are often unverifiable. The same data may be recorded differently by various agencies, such as banks, customers, regulators or auditors. Block-Chain (BC)   technology employs shared ledgers or computer blocks where…