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Let's say you had one legit $20 and one quite good photocopy of that same $20. If someone were to try to spend both the true bill and the imitation one, someone who took the trouble of looking at either of those invoices' serial numbers would see that they were exactly the exact same number, and consequently one of them needed to be fictitious.
This isn't a perfect analogy--we'll explain in more detail below. .
Once a miner has verified 1 MB (megabyte) worthiness of Bitcoin transactions, they are entitled to win the 12.5 BTC. The 1 MB limit was established by Satoshi Nakamoto, and can be a matter of controversy, as some miners believe the block size ought to be increased to accommodate more data.
Note that I said that verifying 1 MB worth of transactions makes a miner qualified to earn Bitcoin--not everyone who verifies transactions will receive paid out.
1MB of transactions can theoretically be as small as 1 transaction (though this is not in any way common) or several thousand. It depends on how much data the transactions take up.
In order to earn Bitcoin, you need to fulfill two conditions. One is a matter of work, one is a matter of luck.
2) You must be the first miner to arrive at the perfect answer to some numeric issue. This process is also known as a proof of work.
The good news: No advanced math or computation is involved. You may have discovered that miners are solving challenging mathematical problems--that is not true at all. What they are doing is trying to be the first miner to come up with a 64-digit hexadecimal number (a"hash") which is less than or equal to the target hash.
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The bad news: Because it's guesswork, you need a lot of computing power in order to get there . To mine successfully, you need to have a high"hash rate," that is measured in terms of megahashes per second (MH/s), check this site out gigahashes per second (GH/s), and terahashes per second (TH/s).
If you want to estimate just how much Bitcoin you can mine along with your mining rig's hash pace, the site Cryptocompare provides a very helpful calculator.
Either way a GPU (graphics processing unit) miner or an application-specific integrated circuit (ASIC) miner. These can run from $500 into the tens of thousands. Some miners--particularly Ethereum miners--buy individual graphics cards (GPUs) as a low-cost way to cobble together mining operations. The photo below is a makeshift, high-tech mining machine. The cards are such rectangular cubes with whirring circles. Note the sandwich twist-ties holding the graphics cards into the metal rod.
Case in point I tell three friends that I'm thinking about a number between 1 and 100, and that I write that number on a piece of paper and seal it in an envelope. My friends don't have to guess the exact number, they just must be the very first person to guess any number that's less than or equal to this number I'm thinking of.
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Let us say I'm thinking about the number 19. If Friend A guesses 21they shed because 21>19. If Friend B guesses 16 and Friend C guesses 12, then they have both technically came at workable answers, since 16<19 and 12<19. There's no"extra credit" for Friend B, even though B's answer was nearer to the target answer of 19. Check This Out .
In Bitcoin conditions, simultaneous answers occur frequently, but in the end of the day there can only be one winning answer. When multiple simultaneous answers are presented which can be equivalent to or less than the target number, the Bitcoin network will decide by a simple majority--51 percent --that miner to honour. Normally, it is the miner who has done the work, i.e.
The losing block then becomes an"orphan block" .
Now imagine that I present the"guess what number I'm thinking of" question, however I'm not asking only 3 friends, and I'm not thinking of a number between 1 and 100. Rather, I am asking millions of would-be miners and I am thinking of a 64-digit hexadecimal number. Now you see that it is going to be quite hard to guess the ideal answer.
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The number preceding has 64 digits. Easy enough to understand so far. As you probably noticed, that number consists not just of numbers, but also letters of this alphabet. Why is that
In order to understand these letters are doing in the center these details of numbers, let's unpack the word"hexadecimal."
As you know, we use the"decimal" system, which means it is base 10. This in turn means that each and every digit has 10 chances, 0-9.