Today, there’s a new upcoming issue that’s causing a lot of discussion among tax lawyers and tax authorities: that of crypto-currencies, new currencies that are based on blockchain technology and secured by cryptography. Although Bitcoin is the most well-known, there are about half a dozen cryptocurrencies which are used for online transactions. Cryptocurrencies are decentralised, which means that they aren’t controlled by any single bank or central authority, and can be sent directly between two parties using private and public keys.
Source: way2vat.com