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Let us say you had one legit $20 and one quite good photocopy of that same $20. If someone were to try to spend both the real bill and the fake one, someone that took the trouble of looking at either of the bills' serial numbers would observe that they had been the exact same number, and thus one of them needed to be fictitious.
This isn't a perfect analogy--we will explain in more detail below. .
Once a miner has confirmed 1 MB (megabyte) worth of Bitcoin transactions, they are entitled to win the 12.5 BTC. The 1 MB limit was set by Satoshi Nakamoto, and can be a matter of controversy, as some miners think the block size should be increased to accommodate more data.
Note that I said that verifying 1 MB value of transactions makes a miner eligible to earn Bitcoin--not everyone who supports transactions will receive paid off.
1MB of transactions can theoretically be as little as 1 transaction (though this is not at all common) or several thousand. It depends on how much information the transactions take up.
In order to earn Bitcoin, you need to meet two conditions. One is a matter of work, one is a matter of luck.
2) You have to be the first miner to reach the perfect answer to some numeric issue. This practice is also known as an evidence of work.
The fantastic news: No advanced math or computation is involved. You might have heard that miners are solving difficult mathematical problems--that's not true in any way. What they are actually doing is trying to be the first miner to think of a 64-digit hexadecimal number (a"hash") that is less than or equal to the hash.
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The bad news: Because it is guesswork, you need a good deal of computing power in order to get there first. To mine , you need to have a higher"hash speed," which is measured in terms of megahashes per second (MH/s), gigahashes per second (GH/s), and terahashes per second (TH/s).
If you want to estimate how much Bitcoin you can mine along with your mining rig's hash rate, the site Cryptocompare offers a helpful calculator.
Either way a GPU (graphics processing moved here 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--purchase individual graphics cards (GPUs) as a cheap method to cobble together mining operations. The photo below is a makeshift, home-made mining machine. The cards are such rectangular blocks with whirring circles. Note the sandwich twist-ties holding the pictures cards into the metal pole.
Case in point I tell three friends I'm thinking of 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 specific number, they simply have to be the very first person to figure any number that's less than or equal to this number I am thinking of.
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Let us say I'm thinking of the number 19. If Friend A guesses 21they shed because 21>19. If Friend B supposes 16 and Friend C supposes 12, then they've both technically came at workable answers, because 16<19 and 12<19. There is no"extra credit" for Friend B, even though B's answer was closer to the goal answer of 19. .
In Bitcoin conditions, simultaneous answers occur frequently, but in the end of the day there can only Extra resources 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%--that miner to honour. Normally, it's the miner who has done the most work, i.e.
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The number preceding has 64 digits. Easy enough to understand so far. As you likely noticed, that number consists not just of numbers, but also letters of the alphabet. Why is that
In order to understand these letters are doing in the middle of numbers, let's unpack the word"hexadecimal."
As you knowwe use the"decimal" system, which means it's base 10. This in turn means that every digit has 10 chances, 0-9.