# Little Known Facts About 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 who took the problem of looking at either of the invoices' consecutive numbers would see that they were the exact same number, and consequently one of them had to be false.

This isn't a perfect 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 think the block size should be increased to accommodate more information.

Note that I said that verifying 1 MB worth of transactions makes a miner qualified to earn Bitcoin--not everyone who supports transactions will receive paid off.

1MB of transactions can technically be small as 1 transaction (though this is not at all common) or several thousand. It depends on how much data the transactions consume.

In order to earn Bitcoin, you need to meet two conditions. One is a matter of effort, one is a matter of luck.

2) You have to be the first miner to arrive at 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 may have discovered 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 hash.

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The bad news: Because it's guesswork, you need a good deal of computing power in order to get there first. To mine , 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 could mine along with your mining rig's hash pace, the site Cryptocompare offers 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--purchase individual graphics cards (GPUs) as a low-cost method 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 to the metal rod.

Case in point : I tell three friends I'm thinking of a number between 1 and 100, and I write that number on a piece of paper and seal check out this site it in an envelope. My friends don't need to guess the specific number, they simply have to be the 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 am thinking about the number 19. If Friend A guesses 21they lose because 21>19. If Friend B supposes 16 and Friend C supposes 12, then they have both technically came at viable answers, because 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 in the end of the day there can only be one winning answer. When multiple simultaneous answers are presented that are 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's the miner who has done the work, i.e.

The losing block then becomes an"orphan block" .

Now imagine that I present the"figure what number I am thinking of" question, however I am not asking just three friends, and I'm not thinking of a number between 1 and 100. Instead, I'm asking millions of prospective miners and I am thinking about a 64-digit hexadecimal number. Now you see that it is going Get More Info to be quite hard to guess the right answer.

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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 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 knowwe use the"decimal" system, which means it is base 10. This in turn means that each and every digit has 10 possibilities, 0-9.