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But just how can you create a system that has a decentralized ledger How can you give someone the ability to update the ledger without giving them too much powerin case they become corrupt or negligent in their job
Well, Bitcoins rulesalso known as the Bitcoin protocolsolves that in a very creative manner I like to call Who Wants to Be a Banker
In short, anyone who wants to take part in updating the ledger of Bitcoin transactions, known as the blockchain, can do this. All you need is to guess a random number that solves an equation generated by the computer system. Sounds simple, right
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Obviously, this guessing is all done by your computer. The more powerful your computer is, the more supposes you can create in a second, increasing your chances of winning this match. If you manage to guess correctly, you earn bitcoins and get to write the next page of Bitcoin transactions on the blockchain. .
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1. Once your mining computer comes up with the right guess, your mining program determines which of these current pending transactions will be grouped together into the next block of transactions. Compiling this block represents the moment of glory, as youve now become a temporary banker of Bitcoin who gets to upgrade the Bitcoin transaction ledger known as the blockchain. .
2. The block youve created, along with the solution, is sent to the whole network so other computers can affirm it. Its somewhat much like some Rubiks cube: The solution is quite tough to achieve but very easy to validate.
3. Every computer that validates your solution upgrades its copy of this Bitcoin transaction ledger with the transactions that you opted to include in the cube.
4. The machine generates a fixed amount of bitcoins (currently 12.5) and benefits them to you as compensation for time and energy you spent solving the math problem.
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5. Additionally, you get paid any transaction fees that were attached to the transactions you inserted into the next block.
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6. Each of the transactions in the cube youve only entered are now confirmed by the Bitcoin network and therefore are virtually irreversible.
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Therefore thats Bitcoin mining in a nutshell. Its called mining due to the simple fact that this process helps mine new Bitcoins from the system. But if you think about it, the mining component is merely a by-product of this transaction confirmation process. Therefore that the name is a bit misleading, since the main goal of mining is 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 upgrade the blockchain. Of course, that the miners with computing power will succeed more often, but on account of the law of statistical probability, its highly unlikely that the exact same miner will succeed every time. .
Now that you know what Bitcoin mining is, you may be thinking, Cool! Free money! Where do I sign up Well, not so fast
Satoshi Nakamoto, who invented Bitcoin, crafted the rules for mining in a way that the further mining power the network has, the harder it is to imagine the answer to the mining math issue. Therefore that the difficulty of the mining method is really self-adjusting into the gathered mining power the network owns. .
If more miners join, it is going to get harder to solve the issue; when many of them drop off, it will get easier. This is known as mining issue.
He wanted to create a steady flow of new bitcoins into the system. In a sense, this was done to keep inflation in check. Mining difficulty is set so that, on average, a new block will be added every ten minutes (i.e., the number is going to be guessed each ten minutes on average). .
Now, navigate here remember, this is on average. We can have two cubes being added 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 kind of self-adjusting mechanism has made a sort of arms race to acquire the most efficient and strong miners as soon as possible.
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When Bitcoin first started out, there werent a lot of miners out there. In reality, Satoshi, the inventor of Bitcoin, and also his friend Hal Finney were a couple of the only people mining Bitcoin back at 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 low. As Bitcoin began to catch on, folks looked for more powerful mining solutions.