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However, how can you create a system that has a decentralized ledger How can you give someone the ability to upgrade the ledger without giving them too much powerin case they become corrupt or negligent in their work
Well, Bitcoins rulesalso known as the Bitcoin protocolsolves this in a very creative manner I love to call Who Wants to Be a Banker
In a nutshell, anyone who wants to take part in updating the ledger of all Bitcoin transactions, known as the blockchain, can do so. Whatever you need is to guess a random number that solves an equation generated by the system. Sounds easy, right
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Obviously, this guessing is all done by your computer. The more powerful your computer is, the further supposes you can make in one second, increasing your chances of winning this game. If you manage to figure right, you earn bitcoins and have to write the next page of Bitcoin transactions on the blockchain. .
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1. Once your mining computer comes up with the ideal suspect, your mining system determines which of the current pending transactions will be grouped together into the next block of transactions. Compiling this block represents your moment of glory, as youve now become a temporary banker of Bitcoin who gets to update the Bitcoin transaction ledger known as the blockchain. .
2. The block youve generated, along with your solution, is sent to the entire network so other computers can affirm it. Its somewhat much like some Rubiks cube: The solution is very tough to attain but quite easy to validate.
3. Every computer which validates your solution updates its copy of the Bitcoin transaction ledger with the transactions that you opted to include in the cube.
4. The system generates a fixed amount of bitcoins (currently 12.5) and benefits them to you as compensation for the time and energy you spent solving the math issue.
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5. Additionally, you get paid any transaction fees which were attached to the transactions you inserted into the next block.
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6. All the transactions in the block youve only entered are now confirmed by the Bitcoin network and are virtually irreversible.
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Therefore thats Bitcoin mining in a nutshell. Its called mining due to the fact that this process helps mine new Bitcoins from the computer system. But if you think about it, the mining part is merely a by-product of this transaction confirmation procedure. So that the name is somewhat misleading, since the main objective of mining would be to maintain the ledger in a decentralized manner. .
As you can imagine, since mining is based on a form of guessing, for each block, a different miner will suppose the number and also be granted the right to update the blockchain. Of course, the miners with computing power will succeed more often, but due to the regulation of statistical probability, its highly unlikely that the exact same miner will succeed each time. .
Now you know what Bitcoin mining is, you may be thinking, Cool! Free money! Where do I published here sign up Well, not so fast
Satoshi Nakamoto, who invented Bitcoin, crafted the principles for mining in a way that the further mining energy the network has, the harder it is to guess the answer to the mining math problem. Therefore the find difficulty of the mining process is actually self-adjusting into the accumulated mining power the network possesses. .
If more miners join, it will get harder to solve the issue; when many of them drop off, it is going to get easier. This is known as mining difficulty.
Now, remember, this is on average. We can have two cubes being inserted minute after minute and then wait an hour for the next block. In the long run, this may even out to ten minutes on average.
As you can imagine, this type of self-adjusting mechanism has created a sort of arms race to acquire the most efficient and powerful miners as soon as possible.
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When Bitcoin first started out, there werent a lot of miners on the market. In fact, Satoshi, the inventor of Bitcoin, and also his friend Hal Finney were a few the only individuals mining Bitcoin back in the time with their own personal computers.
Using your CPU (central processing unityour computers brain and an integrated component in any computer) was enough for mining Bitcoin back in 2009, since mining difficulty was reduced. As Bitcoin started to catch on, folks looked for more powerful mining solutions.