# Some Of Bitcoin Mining Code

Let us 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 invoices' consecutive numbers would see that they were exactly the same number, and consequently one of them needed to be fictitious.

That 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 eligible to win the 12.5 BTC. The 1 MB limit was established by Satoshi Nakamoto, and is a matter of controversy, as some miners believe the block size ought to be increased to accommodate more data.

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

1MB of transactions can theoretically be as small as 1 transaction (though this is not in any way 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 right answer to a numeric issue. This process is also known as a proof of work.

The good news: No advanced math or computation is involved. You might have discovered that miners are solving challenging mathematical problems--that's not true at all. What they're doing is trying to be the first miner to think of a 64-digit hexadecimal number (a"hash")  which is less than or equivalent to the target hash.

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The bad news: Since it's guesswork, you need a good deal of computing power in order to get there first. To mine successfully, you need to have a high"hash speed," which 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 pace, the website 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 low-cost method to cobble together mining operations.  The photograph 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 into the metal rod.

ExampleI tell three friends that I'm thinking of 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 need to guess the specific number, they just have to be the very first person to figure any number that's less than or equal to the number I am thinking of.

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Let's say I am thinking of the number 19. If Friend A guesses 21they lose because 21>19. If Friend B supposes 16 and Friend C guesses 12, then they have both theoretically arrived at viable 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 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 which can be equal 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 that 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 3 friends, and I am not thinking of a number between 1 and 100. Instead, I'm asking more tips here 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 hard to guess the right answer.

## How Bitcoins Are Made - Questions

The number above has 64 digits. Easy enough to understand so far. As you likely noticed, that number consists not only of numbers, but also letters of this alphabet. Why is that

In order to understand what these letters are doing in the middle of numbers, let us unpack the term"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 possibilities, 0-9.