# The Only Guide for How Bitcoins Are Made

Let us say you had one legit \$20 and one quite good photocopy of the same \$20. If someone were to attempt to spend both the true bill and the imitation one, someone that took the problem of looking at both of those bills' consecutive numbers would see that they had been the same number, and thus one of them had to be fictitious.

This isn't a great analogy--we will explain in more detail below. .

Once a miner has confirmed 1 MB (megabyte) worthiness of Bitcoin transactions, they are entitled 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 said that verifying 1 MB value of transactions makes a miner eligible to earn Bitcoin--not everyone who verifies transactions will get paid out.

1MB of transactions can technically be little as 1 transaction (although this is not in any way common) or several thousand. It depends on how much information the transactions consume.

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 an evidence of work.

The fantastic news: No advanced math or computation is involved. You may have discovered that miners are solving challenging 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 equivalent to the target hash.

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The bad news: Since it's guesswork, you need a lot of computing power in order to get there . To mine , you need to get a higher"hash speed," which is measured in terms of megahashes per second (MH/s), find more info gigahashes per second (GH/s), and terahashes per second (TH/s).

If you want to estimate just how much Bitcoin you can mine with your mining rig's hash rate, the site Cryptocompare provides a helpful calculator.

Either 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 photograph below is a makeshift, high-tech mining machine.  The cards are those rectangular cubes with whirring circles.  Note the sandwich twist-ties holding the pictures cards into the metal pole.

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 sheet of paper and seal it in an envelope. My friends don't have to guess the specific number, they just must be the very first person to guess any number that is less than or equal to this number I'm thinking of.

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Let's say I'm thinking about the number 19. If Friend A guesses 21they lose because 21>19. If Friend B guesses 16 and Friend C guesses 12, then they have 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 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 Website network will decide by a simple majority--51%--that miner to honour. Normally, it's the miner that has done the work, i.e.

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

Now imagine I pose the"guess what number I am thinking of" question, however I'm not asking only 3 friends, and I am not thinking of a number between 1 and 100. Rather, I am asking millions of would-be miners and I'm thinking about a 64-digit hexadecimal number. Now you see that it is going to be quite hard to guess the right answer.

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The number above 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 what these letters are doing in the center of numbers, let's unpack the word"hexadecimal."

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