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Insteadthey went with Solution 2. The resulting currency, known as bitcoin cash, increased the blocksize to 8 Mb in order to accelerate the verification procedure to allow a performance of around 2 million transactions every day. At 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
Since its similar to gold mining in that the bitcoins exist in the protocols design (like the gold is underground), but they havent been brought out into the mild yet (just as the gold hasnt yet been dug up). The bitcoin protocol stipulates that 21 million bitcoins will exist at some point.
They get to do this as a reward for creating cubes of confirmed transactions and including them in the blockchain.
Backtracking a little, lets talk about nodes. A node is a powerful computer that runs the bitcoin applications and assists to keep bitcoin running by participating in the relay of information. Anyone can run a node, you just download the bitcoin applications (totally free ) and leave a certain port open (the drawback 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 some 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 fast. .
Some nodes are mining nodes (usually known as miners). These group outstanding transactions into cubes and add them into the blockchain. How do they do so by solving a complex mathematical puzzle that is part of this bitcoin program, and including the answer in the cube. The puzzle that needs solving is to find a number which, when combined with the information in the block and passed through a hash function, creates a result that is within a certain range.
How do they find this number By guessing at random. The hash function which makes it impossible to predict exactly what the output will be. So, miners guess the puzzle number and use the hash function to the combination of that guessed number and the information in the cube. The resulting hash has to start with a pre-established number of zeroes.
Whats more, there might be several nonces that produce 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 victory to the remainder of the network. All the other miners immediately stop work on that block and begin trying to figure out the puzzle number for your next one. As a reward for the own work, the victorious miner has some new bitcoin. .
In the time of writing, the payoff is 12.5 Learn More bitcoins, which at time of writing is worth almost $200,000.
Also, the expenses 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 electricity that running these processors consumes. .
And, the number of all bitcoins given as a reward for solving the mystery will decrease. Its 12.5 now, however, it halves every four years or so (the next one is expected in 2020-21). The value of bitcoin relative to price of electricity and hardware could go up over the next few decades to partly compensate this reduction, but its not certain. .
The problem of the calculation (the required number of zeroes at the beginning of the hash string) is corrected frequently, so it requires on average about 10 minutes to process a block.
Why 10 minutes that's the amount of time that the bitcoin developers think is necessary for a continuous and diminishing flow of new coins until the highest number of check it out 21 million is attained (anticipated some time in 2140).