The use of blockchains addressed a problem faced by previous efforts to create purely digital of value, and some can copies of their holdings and traded or used a cryptocurrency [0] Pew Research Center.
cryotocurrencies
The Bitcoin system increases the complexity of these codes as more computing power is used to solve them. Regulators in several countries have warned against cryptocurrency and some have taken measures to dissuade users. In August , Cuba followed with Resolution to recognize and regulate cryptocurrencies such as Bitcoin.
