Digital currency of its creators. "Forbes" writer Tim Worstall has written that the value of bitcoin is largely derived from speculative trading. Bitcoin has also been criticised for its energy inefficient SHA-256-based proof of work. Digital currency Digital currency (digital money, electronic money or electronic currency) is a type of currency available in digital form (in contrast to physical, such as banknotes and coins). It exhibits properties similar to physical currencies, but can allow for instantaneous transactions and borderless transfer-of-ownership. Examples include virtual currencies and cryptocurrencies and central bank issued money accounted for in a computer database (including digital base money). Like
Ora (currency) Efficient Group, a South African financial services company, is currently tasked with developing the digital currency in order to reduce costs that are incurred by printing notes. Ora (currency) The Ora (symbol:Φ, ) is the local currency of Orania, an Afrikaner enclave in South Africa. It is pegged at par with the South African rand. The name, recalling that of the town where it circulates, derives from Latin "aurum", meaning "gold". The currency is not sanctioned by the South African Reserve Bank. The first notes were issued in April 2004 to provide an internal currency for Orania as part of