Online factors exhibit stronger relationships in the long term, and such relationships were found to be consistently positive. The long term positive relationships suggest long term price trends are linked with online activity. This is an intuitive result, given that successful cryptocurrencies are likely to have active communities; as the community grows, so does belief in the cryptocurrency, and vice versa.
Essentially it is very hard to tell which firms are real and which ones are scammers.

However, while there are some organisations that accept it as currency, others shy away due to Bitcoin’s dramatic price swings. Driven largely by speculation, the price per Bitcoin rose sharply from $1,151 in January 2017, to an all-time high of $19,783 in December the same year.* It then dropped to below $7,000 by February 2018 and rallied again to around $11,000 over a matter of days, before plunging once more to trade below $4,000. Subsequently, one of the key characteristics of Bitcoin that traders should understand is its potential for extreme volatility.
Mining computers compile valid transactions into a new block and attempt to generate the cryptographic link to the previous block by finding a solution to a complex algorithm. When a computer succeeds in generating the link, it adds the block to its version of the blockchain file and broadcasts the update across the network.