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In this file photo, a man arrives for the Inside Bitcoins conference and trade show in New York. For years, it's been a mystery: Who created the bitcoin crypto-currency, only to vanish as the virtual money grew into a phenomenon?

Australian computer scientist Craig Wright now says he's "Satoshi Nakamoto," the alias that was used to create bitcoin. In his blog post, Wright also discusses identity and meaning — or, more precisely, the sign and the signified — key semiotic concepts that apply to both currency and literature Wright quotes Jean-Paul Sartre and theology in which he holds a doctorate.

Wright, 45, is an entrepreneur whose name has often been mentioned in conversations about bitcoin's creator — most notably in December, when NPR's Alina Selyukh wrote that both Wired magazine and Gizmodo had concluded bitcoin was probably started by Wright, possibly in conjunction with U. At the time, Wright was also under the scrutiny of Australia's government, with police raiding his home and office in Sydney as part of a tax investigation. That part of the story — along with journalists' since disputed claims of having unmasked Satoshi — means that Wright's declaration is generating some skepticism, and even some declarations that he's engaging in a hoax.

In forums on Reddit and elsewhere, critics are faulting the proof that Wright seemed to offer for his claim; others say it could take days and weeks to verify. The BBC , which along with The Economist and GQ was given special access to Wright, reports that during its session with him, he "digitally signed messages using cryptographic keys created during the early days of bitcoin's development.

The keys are inextricably linked to blocks of bitcoins known to have been created or 'mined' by Satoshi Nakamoto. Wright says that while he was "the main part" of creating Bitcoin, he did it with help from others.

He adds that the tax dispute in Australia stems from a basic misunderstanding about how bitcoin works. As for why he's now emerging, Wright says he wants to clear the record, citing distractions and privacy concerns related to his family and staff stemming from the fixation on unmasking bitcoin's creator. Bank Secrecy Act applied to persons creating, exchanging, and transmitting virtual currencies. In May the U. Securities and Exchange Commission SEC "warned about the hazards of bitcoin and other virtual currencies".

In addition, over 90 central banks are engaged in DLT discussions, including implications of a central bank issued digital currency. The Bank of Canada have explored the possibility of creating a version of its currency on the blockchain. A deputy governor at the central bank of China , Fan Yifei, wrote that "the conditions are ripe for digital currencies, which can reduce operating costs, increase efficiency and enable a wide range of new applications".

The Danish government proposed getting rid of the obligation for selected retailers to accept payment in cash, moving the country closer to a "cashless" economy. A law passed by the National Assembly of Ecuador gives the government permission to make payments in electronic currency and proposes the creation of a national digital currency. The electronic currency will be backed by the assets of the Central Bank of Ecuador", the National Assembly said in a statement. The German central bank is testing a functional prototype for the blockchain technology-based settlement of securities and transfer of centrally-issued digital coins.

Unlike traditional mobile wallets, which takes a specified amount of money from user and stores it in its own accounts, UPI withdraws and deposits funds directly from the bank account whenever a transaction is requested. Government-controlled Sberbank of Russia owns Yandex. Money — electronic payment service and digital currency of the same name. South Korea plans national digital currency using a Blockchain. Sweden is in the process of replacing all of its physical banknotes, and most of its coins by mid However the new banknotes and coins of the Swedish krona will probably be circulating at about half the peak of 12, kronor per capita.

The Riksbank is planning to begin discussions of an electronic currency issued by the central bank to which "is not to replace cash, but to act as complement to it". No decision has been currently made about the decision to create "e-krona". In her speech Skingsley states: In , a city government first accepted digital currency in payment of city fees. Zug, Switzerland , added bitcoin as a means of paying small amounts, up to SFr. In order to reduce risk, Zug immediately converts any bitcoin received into the Swiss currency.

Swiss Federal Railways , government-owned railway company of Switzerland, sells bitcoins at its ticket machines.

The chief economist of Bank of England , the central bank of the United Kingdom, proposed abolition of paper currency. The Bank has also taken an interest in bitcoin.

One suggests that the economic benefits of issuing a digital currency on a distributed ledger could add as much as 3 percent to a country's economic output.

Hard electronic currency does not have the ability to be disputed or reversed when used. It is nearly impossible to reverse a transaction whether it is justified or not. It is very similar to cash. Advantages of this system include it being cheaper to operate, and transactions are instantaneous.

Western Union, KlickEx and Bitcoin are examples of this type of currency. Soft electronic currencies are the opposite of hard electronic currencies. Payments can be reversed. Usually when a payment is reversed there is a "clearing time.

Examples of soft currencies are PayPal and any type of credit card. A hard currency can be "softened" with a third party service. Many of existing digital currencies have not yet seen widespread usage, and may not be easily used or exchanged. Banks generally do not accept or offer services for them. As such, they may be shut down or seized by a government at any time. From Wikipedia, the free encyclopedia.

For the 20th century brand, see ecash. List of digital currencies. Retrieved 1 December Retrieved 24 January Retrieved 18 April Retrieved 28 May Retrieved 14 May Retrieved 1 February Archived PDF from the original on 6 November A Guide to the Most Promising Cryptocurrencies". Retrieved 7 January Retrieved 30 December Federal Deposit Insurance Corporation.

Financial Crimes Enforcement Network. Archived from the original on Retrieved 2 October Retrieved 3 October Retrieved 8 October