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…

The name Black Holes (BH) was given to dying stars at the end of their life or to the residual matter after the collision of two stars, by an American scientist, John Wheeler, at New York in 1967. Interestingly, there is nothing black about them and, in fact, BH are invisible. These represent un-imaginably huge…