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Insteadthey went with Solution 2. The resulting currency, called bitcoin money, increased the blocksize to 8 Mb in order to accelerate the verification procedure to permit a performance of around 2 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 from the ground. However, bitcoin isnt bodily, 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 light yet (like the gold 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 validated transactions and including them in the blockchain.
Backtracking a little, lets discuss nodes. A node is a powerful computer which runs the bitcoin software 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 takes 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.. That way it ends up getting around the entire network pretty fast. .
Some nodes are mining nodes (usually known as miners). These set outstanding transactions into blocks and add them to the blockchain. How can they do so by solving a complex mathematical mystery that's a portion of the bitcoin app, and including the answer in the block. The puzzle that needs solving is to find a number that, when combined with the data in the cube 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 what the outcome will be. So, miners guess the puzzle number and apply the hash function to the combination of the guessed number and the data in the block. The resulting hash must start with a pre-established number of zeroes.
Whats more, there may be several nonces that make the desired result, or there may be none (in the event the miners keep trying, but with a different block configuration). .
The first miner to acquire a resulting hash within the desirable range announces its victory to the remainder of the network. All the other miners immediately cease work on that block and start trying to find out the puzzle number for the next one. As a reward for the work, the victorious miner has some new bitcoin. .
In the time of writing, the reward is 12.5 bitcoins, which in time of writing is worth almost $200,000.
Additionally, the expenses of being a mining node are considerable, not only because of the powerful hardware needed (if you have a faster processor than your opponents, you've got a better chance of finding the right number before they perform ), but also because of the large amounts of power that running these chips consumes. .
And, the number of all bitcoins given as a reward for solving the puzzle will decrease. Its 12.5 now, but it halves every four years or so (the next one is expected in 2020-21). The value of bitcoin relative to cost of electricity and hardware could extend up over the next few decades 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 adjusted 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 for a continuous and diminishing flow of new coins until the highest number of 21 million is attained (anticipated some time my review here in 2140).