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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 permit a performance of around two million transactions every 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 from the ground. But bitcoin isnt physical, so why do we call it mining
Because its similar to gold mining in that the bitcoins exist in the protocols design (just as the gold exists underground), but they havent been brought out into the light yet (like the golden hasnt been dug up). The bitcoin protocol stipulates that 21 million bitcoins will exist at some point.
They get to perform so as a reward for creating blocks of validated transactions and including them in the blockchain.
Backtracking a bit, lets discuss nodes. A node is a powerful computer which runs the bitcoin applications and helps to keep bitcoin running by participating in the relay of information. Anyone can run a node, you simply download the bitcoin applications (totally free ) and leave a certain port open (the drawback is 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 which it knows, that will relay the information to nodes that 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 set outstanding transactions into cubes and add them to the blockchain. How do they do so by solving a complex mathematical mystery that is a portion of the bitcoin program, and including the answer in the block. The mystery that needs solving is to find a number that, when combined with all the data in the cube and passed through a hash function, produces a result that is within a certain range.
(For fiction fans, this number is called a nonce, which can be a concatenation of number employed once. In the case of bitcoin, the nonce is an integer between 0 and 4,294,967,296.)
How can they find this number By guessing at random. anonymous The hash function makes it impossible to predict exactly what the output will be. So, miners suppose the puzzle number and apply the hash function to the combination of that guessed number and the information in the cube. The resulting hash must start with a pre-established number of zeroes.
Whats more, there might be several nonces that make the desired result, or there might be none (in which case the miners keep trying, but using a different block configuration). .
The first miner to get a resulting hash within the desirable range announces its success to the rest of the network. The rest of the miners immediately stop work on that block and start trying to find out the mystery number for the next one. As a reward for its work, the victorious miner has some new bitcoin. .
At the time of writing, the payoff is 12.5 bitcoins, which at time of writing will be worth almost $200,000.
Although its not nearly as cushy a deal as it sounds. There are a lot of mining nodes competing for this benefit, and it's a question of luck and computing power (the more guessing calculations you can perform, the luckier you're ).
Additionally, the costs of being a mining node are considerable, not only because of the effective hardware needed (in case you have a faster processor than your opponents, you've got a better chance of finding the correct number before they do), but also due to the large amounts of power that running these processors 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 decades or so (the next one is expected in 2020-21). The worth of bitcoin relative to cost of electricity and hardware could extend up during the next few decades to partly compensate this reduction, but its not certain. .
The problem of this calculation (the necessary number of zeroes at the beginning of the hash string) is corrected frequently, so it takes on average about 10 minutes to process a block.
Why 10 minutes That is the amount of time that the bitcoin programmers think is necessary to get a steady and diminishing flow of new coins until the highest number of 21 million has been attained (expected some time in 2140).