Just under $2 billion has been wiped off the value of bitcoin (Exchange: BTC=-USS) in under three days as a fight over the future of the technology underpinning the cryptocurrency wages on.
Bitcoin was trading at around $1,142.60 at time of publication, giving it a market cap of $18.53 billion, according to CoinDesk data. This is down from highs of $1,255.32 on Tuesday, which valued the total bitcoin pile at $20.36 billion.
Meanwhile, rival cryptocurrency ether is up over 84 percent from highs of $29.87 on Tuesday to trading at all-time highs of around $55 on Friday, according to Coinmarketcap.com. The market captilization shot from $2.68 billion to $4.95 billion. It is the only other cryptocurrency to be valued at over $1 billion.
Much of the inverse price movement stems from traders' worries over the future of bitcoin and the underpinning blockchain technology.
The real concern is if Bitcoin Unlimited gains major support, it could have an impact on the underlying blockchain technology that supports bitcoin. Bitcoin Unlimited has about an 11 percent market share of all the "nodes" in existence. Nodes are the backbone of bitcoin's infrastructure and refer to those mining the transactions as well as those tracking the movement of bitcoin to make sure it is all working correctly.
Nodes can run Blockchain Unlimited software which would signal their support for increasing the block size. If 50 percent of bitcoin miners adopted Bitcoin Unlimited, there would then be two major blockchains and a "fork" would be created made of Bitcoin Core, the current main software behind the infrastructure, and Bitcoin Unlimited.
Both blockchains would continue to run as long as there are nodes running them. But there would then be essentially two different coins Bitcoin and Bitcoin Unlimited.
https://www.yahoo.com/finance/news/nearly-2-billion-wiped-off-121914544.html