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Instead, they went with Solution 2. The resulting currency, called bitcoin money, increased the blocksize to 8 Mb in order to accelerate the verification procedure to allow a performance of around two 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 from the ground. However, bitcoin isnt physical, so why do we call it mining
Since its like gold mining in that the bitcoins exist in the protocols design (like the gold exists underground), but they havent been brought out into the mild yet (just as the golden 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 blocks of confirmed transactions and including them in the blockchain.
Backtracking a bit, lets discuss 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 just download the bitcoin software (free) and leave a certain port open (the downside is the fact 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.. This way it ends up getting around the entire network fairly quickly. .
Some nodes are mining nodes (usually referred to as miners). These group outstanding transactions into blocks and add them into the blockchain. How can they do so by solving a intricate mathematical puzzle that is a portion of the bitcoin program, and including the answer in the block. The puzzle that needs solving is to find a number which, when combined with all the data in the block and passed via a hash function, produces a result that's 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 output will be. So, miners guess the mystery number and use the hash function to the combination of that guessed number and also the data 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 desired range announces its success to the rest of the network. The rest of the miners immediately cease work on that block and start trying to find out the mystery number for your next one. As a reward for its work, the victorious miner has some new bitcoin. .
At the time of writing, the reward is 12.5 bitcoins, which in time of writing will be worth nearly $200,000.
Additionally, the expenses of being a mining node are considerable, not only due to the effective hardware needed (if you've got 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 bitcoins awarded as a reward for solving the mystery will decrease. Its 12.5 now, but it pits each four decades or so (the next one is anticipated in 2020-21). The value of bitcoin relative to price of electricity and hardware could extend up over the next few decades to partially compensate this reduction, but its not certain. .
The difficulty of this calculation (the required number read more of zeroes at the beginning of the hash string) is adjusted frequently, so that it requires on average approximately 10 minutes to process a block.
Why 10 minutes That is the amount of time the bitcoin programmers think is necessary for a continuous and diminishing flow of new coins until the maximum number of 21 million has been reached (anticipated some time in 2140).