Cryptocurrency markets are decentralised, which means they are not issued or backed by a central authority such as a government. Instead, they run across a network of computers. However, cryptocurrencies can be bought and sold via exchanges and stored in ‘wallets’ .
Cryptocurrency, the blockchain-based digital currency that has captured the interest of investors and financial service firms alike, has a challenging problem. It can be hard to actually spend this currency like you would regular money.

Long term relationships also strengthen, to some extent, around areas indicated as bubbles. The previously observed long term relationship between Google Trends and Bitcoin price [8] can also be seen here, between late 2012 and 2014 (period band 64–256). With the benefit of extra data it can be observed that the relationship disappears around 2014 (for lower period bands) and 2015 (for higher period bands), before the relationships start occurring more consistently in 2016 and 2017 (a region with a number of bubbles identified). The previously observed relationship between Wikipedia views and Bitcoin observed in 2013 (64–128 band), disappears before again returning in mid-2016 and 2017.
Cryptocurrencies’ finite supply makes them inherently deflationary, more akin to gold and other precious metals — of which there are finite supplies — than fiat currencies that central banks can, in theory, produce unlimited supplies of.