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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 about bitcoin mining, you envisage coins being dug from the ground. However, bitcoin isnt physical, so why do we call it mining
Since its like gold mining in the bitcoins exist in the protocols design (just as the gold exists underground), but they havent been brought out into the mild yet (like the golden hasnt yet been dug up). The bitcoin protocol stipulates that 21 million bitcoins will exist at some point.
They get to perform this as a reward for creating blocks of confirmed 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 (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, who will relay the information to nodes they know, etc.. That way it ends up getting around the entire network fairly quickly. .
Some nodes are mining nodes (usually known as miners). These set outstanding transactions into blocks and add them into the blockchain. How do they do so by solving a intricate mathematical mystery that is part of this bitcoin app, and including the answer in the block. The mystery that needs solving is to find a number which, when combined with all the information in the block and passed via a hash function, produces a result that is within a certain range.
How do they find this number By guessing at random. The hash function makes it impossible to forecast exactly what the output will be. So, miners guess the mystery number and apply the hash function to the combination of the guessed number and the data in the block. 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 the event the miners keep trying, but using a different block configuration). .
The first miner to acquire a resulting hash within the desired range announces its success to the rest of the network. All the other miners immediately cease work on that block and begin 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 payoff is 12.5 bitcoins, which in time of writing will be worth almost $200,000.
Also, the expenses of being a mining node are considerable, not only because of the powerful hardware needed (if you've got a faster processor than your competitors, you have a better chance of finding the right number before they perform ), 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 decades or so (the next one is expected in 2020-21). The value of bitcoin relative to price of electricity and hardware could go up during the next few years to partly compensate this reduction, but its not certain. .
The difficulty of the calculation (the necessary number of zeroes at the beginning of the hash string) is corrected frequently, so that it requires on average approximately 10 minutes to process a block.
Why 10 minutes that's the amount of time that the bitcoin developers think is necessary to get a steady and diminishing flow YOURURL.com of new coins until the maximum number of 21 million has been reached (anticipated some time in 2140).