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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. 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 from the ground. However, 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 light yet (like the gold hasnt 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 blocks 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 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 also 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 they know, etc.. That way it ends up getting around the entire network pretty quickly. .
Some nodes are mining nodes (usually known as miners). These group outstanding transactions into blocks and add them into the blockchain. How do they do so by solving a complex mathematical puzzle that's 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 all the data in the cube and passed through a hash function, produces a result that's within a certain range.
(For fiction fans, this number is called a nonce, which can be a concatenation of number used once. In the instance of bitcoin, the nonce is an integer between 0 and 4,294,967,296.)
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How do they find this number By guessing at random. The hash function makes it impossible to predict exactly what the outcome will be. So, miners suppose the puzzle number and use the hash function to the combination of that guessed number and the data in the block. The resulting hash has to begin with a pre-established number of zeroes.
Whats more, there may be several nonces that make the intended result, or there may be none (in advice 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. The rest of the miners immediately stop work on that block and begin trying to figure out the mystery number for the next one. As a reward for the own work, the victorious miner gets some new bitcoin. .
In the time of writing, the reward is 12.5 bitcoins, which in time of writing is worth nearly $200,000.
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Though its not nearly as cushy a bargain as it sounds. There are a whole lot of mining nodes competing for that reward, and it's a question of fortune and computing power (the more guessing calculations you can perform, the luckier you're ).
And, the number of all bitcoins awarded as a reward for solving the mystery will decrease. Its 12.5 now, but it pits each four years or so (the next one is anticipated in 2020-21). The value of bitcoin relative to price of electricity and hardware could go up during the next few decades to partly compensate this reduction, but its not certain. .
The difficulty of this calculation (the required number of zeroes at the beginning of the hash string) is corrected frequently, so that it requires on average about 10 minutes to process a block.
Why 10 minutes that's the amount of time that the bitcoin programmers think is necessary for a continuous and diminishing flow of new coins until the maximum number of 21 million has been attained (expected some time in 2140).