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Let us say you had one legit $20 and one quite good photocopy of the same $20. If someone were to try to spend both the true bill and the imitation one, someone that took the problem of looking at both of those invoices' serial numbers would see that they had been exactly the same number, and thus one of them needed to be false.

That isn't a great analogy--we'll explain in more detail below. .

Once a miner has confirmed 1 MB (megabyte) worth of Bitcoin transactions, they are eligible to win the 12.5 BTC. The 1 MB limit was set by Satoshi Nakamoto, and is 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 value of transactions makes a miner eligible to earn Bitcoin--not everyone who supports transactions will receive paid out.

1MB of transactions can technically be little as 1 transaction (though this is not at all common) or a few 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 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 heard that miners are solving difficult mathematical problems--that is 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")  which is less than or equal to the target hash.

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The bad news: Since it is guesswork, you need a lot of computing power in order to get there first. To mine successfully, you need to get a high"hash speed," that is quantified 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 could mine along with your mining rig's hash rate, the website Cryptocompare offers a very helpful calculator.

Either a GPU (graphics processing unit) miner or an application-specific integrated circuit (ASIC) miner. These can run from $500 to the tens of thousands.  Some miners--particularly Ethereum miners--purchase 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 graphics cards are those check these guys out rectangular cubes with whirring circles.  Note the sandwich twist-ties holding the pictures cards into the metal pole.

ExampleI tell three friends that I'm thinking about a number between 1 and 100, and I write that number on a piece of paper and seal it in an envelope. My friends don't need to guess the specific number, they simply have to be the very first person to figure any number that is less than or equal to this number I am thinking of.

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Let us say I am thinking of the number 19. If Friend A guesses 21, they lose because 21>19. If Friend B guesses 16 and Friend C guesses 12, then they've both theoretically arrived at viable 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. .

In Bitcoin terms, simultaneous answers occur frequently, but at 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%--that miner to honour. Normally, it's the miner who has done the most work, i.e.

The losing block then becomes an"orphan block." .

Now imagine I present the"figure what number I'm thinking of" question, but I'm not asking just three friends, and I am not thinking of a number see here between 1 and 100. Instead, I'm asking millions of would-be miners and I am thinking of a 64-digit hexadecimal number. Now you see that it's going to be extremely 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 only of numbers, but also letters of the alphabet. Why is that

In order to understand what these letters have a peek at these guys are doing in the center of numbers, let us unpack the term"hexadecimal."

As you knowwe utilize the"decimal" system, which means it's base 10. This in turn means that each and every digit has 10 chances, 0-9.