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Let's say you had one legit $20 and one really good photocopy of that same $20. If someone were to attempt to spend both the true bill and the imitation one, someone who took the trouble of looking at both of the bills' consecutive numbers would observe that they had been the exact same number, and consequently one of them needed to be false.
This isn't a great analogy--we'll explain in more detail below. .
Once a miner has verified 1 MB (megabyte) worthiness of Bitcoin transactions, they are eligible to win the 12.5 BTC. The 1 MB limit was set by Satoshi Nakamoto, and can be an issue of controversy, as some miners believe the block size should be increased to accommodate more information.
Note that I stated that verifying 1 MB worth of transactions makes a miner eligible to earn Bitcoin--not everyone who supports transactions will get paid out.
1MB of transactions can technically be small as 1 transaction (although 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 reach the right answer to a numeric problem. 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're actually doing is trying to be the first miner to think of a 64-digit hexadecimal number (a"hash") that is less than or equivalent 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 first. To mine successfully, you need to have a high"hash rate," 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 just how much Bitcoin you can mine along with your mining rig's hash pace, the site Cryptocompare offers a 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--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 those rectangular blocks with whirring circles. Note the sandwich twist-ties holding the graphics cards into the metal rod.
ExampleI tell three friends that I'm thinking about a number between 1 and 100, and I write that number on a sheet of paper and seal it in an envelope. My friends don't need to guess the specific number, they just have to be the first person to figure 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 of the number 19. If Friend A guesses 21, they shed because 21>19. visit here If Friend B supposes 16 and Friend C guesses 12, then they've both theoretically arrived at workable answers, since 16<19 and 12<19. There is no"extra credit" for Friend B, even though B's answer was nearer to the goal answer of 19. .
In Bitcoin conditions, simultaneous answers happen 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 determine by a simple majority--51%--which miner to honour. Typically, it is the miner who has done the work, i.e.
The losing block then becomes an"orphan block." .
Now imagine I pose the"figure what number I am thinking of" question, but I'm not asking just 3 friends, and I am not thinking of a number between 1 and 100. Instead, 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 extremely difficult 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 the alphabet. Why is that
In order to understand these letters are doing in the center of numbers, let us unpack the word"hexadecimal."
As you knowwe use the"decimal" system, which means it's base 10. This in turn means that each and every digit has 10 chances, 0-9.