A cryptocurrency or crypto currency is a digital asset designed to work as a medium of exchange that uses strong cryptography to secure financial transactions, control the creation of additional does cryptocurrency make money, and verify the transfer of assets. The decentralized control of each cryptocurrency works through distributed ledger technology, typically a blockchainthat serves as a public financial transaction database. Bitcoinfirst released as open-source software inis generally considered the first decentralized cryptocurrency. Inthe American cryptographer David Chaum conceived an anonymous cryptographic electronic money called ecash. This allowed the digital currency to be untraceable by the issuing bank, the government, or any third party. InWei Dai published a description of «b-money», characterized as an anonymous, distributed electronic cash. A currency system based on a reusable proof of work was later created by Hal Finney who followed the work of Dai and Sz...