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Instead, they went with Solution 2. The resulting currency, called bitcoin cash, increased the blocksize to 8 Mb in order to accelerate the verification process to allow a performance of around two million transactions per day. In the time of writing, Bitcoin Cash is valued at $545.00 to Bitcoins $6,328.11.
When you hear bitcoin mining, you envisage coins being dug out of the ground. But bitcoin isnt physical, so why do we call it mining
Because its similar to gold mining in the bitcoins exist in the protocols design (like the gold exists underground), but they havent been introduced into the light yet (like the golden hasnt yet been awakened ). The bitcoin protocol stipulates that 21 million bitcoins will exist at some point.
They get to do so as a reward for creating cubes of confirmed transactions and including them in the blockchain.
Backtracking a little, lets discuss nodes. A node is a powerful computer which runs the bitcoin applications and helps keep bitcoin running by participating in the relay of information. Anyone can run a node, you simply download the bitcoin applications (totally free ) and also leave a certain port open (the downside is the fact that it consumes energy and storage space the network at time of writing carries up about 145GB).
One node will send information to a few nodes that it knows, that will relay the information to nodes they know, etc.. This way it ends up getting around the entire network pretty quickly. .
Some nodes are mining nodes (usually referred to as miners). These group outstanding transactions into blocks and add them into the blockchain. How can they do so by solving a intricate mathematical mystery that is part of this bitcoin program, and including the answer in the cube. The mystery that needs solving is to find a number that, when combined with the information in the block and passed via a hash function, produces a result that is within a certain range.
How can they find this number By guessing at random. The hash function which makes it impossible to forecast exactly what check it out the output will be. So, miners guess the mystery number and apply the hash function to the combination of that guessed number and the data in the block. The resulting hash has to start with a pre-established number of zeroes.
Whats more, there may be several nonces that produce the desired result, or there may be none (in which case the miners keep trying, but with a different block configuration). .
The first miner to get a resulting hash within the desirable range announces its victory to the rest of the network. The rest of the miners immediately cease work on that block and start trying to find out the puzzle number for the next one. As a reward for its work, the victorious miner gets some new bitcoin. .
In the time of writing, the payoff is 12.5 bitcoins, which at time of writing will be worth almost $200,000.
Also, the expenses of being a mining node are considerable, not only because of the effective hardware needed (if you've got a faster processor than your competitors, you have a better chance of finding the right number before they do), but also due to the large amounts of electricity that running these chips consumes. .
And, the number of all bitcoins awarded as a reward for solving the puzzle will decrease. Its 12.5 now, however, it pits each four years or so (the next one is expected in 2020-21). The value of bitcoin relative to price of power and hardware could extend up during the next few years to partially compensate this reduction, but its not certain. .
The difficulty of the calculation (the required number of zeroes at the beginning of the hash string) is about his corrected frequently, so it takes on average about 10 minutes to process a block.
Why 10 minutes That is the amount of time the bitcoin developers think is necessary for a steady and diminishing flow of new coins until the maximum number of 21 million has been attained (anticipated some time in 2140).