# Bitcoin Trading History - Questions

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

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

Once a miner has verified 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 data.

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 off.

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

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

2) You must be the first miner to reach the right answer to a numeric issue. 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 is not true in any way. What they are actually doing is trying to be the first miner to come up with a 64-digit hexadecimal number (a"hash")  which is less than or equal to the target 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 . To mine successfully, you need to get a higher"hash rate," 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 how much Bitcoin you could 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--purchase individual graphics cards (GPUs) as a low-cost way to cobble together mining operations.  The photo below is a makeshift, home-made 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 Full Article in point I tell three friends I'm thinking of 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 exact number, they just have to be the very first person to guess any number that's less than or equal to this number I'm thinking of.

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Let's say I am thinking of the number 19. If Friend A guesses 21, they shed because 21>19. If Friend B supposes 16 and Friend C guesses 12, then they've both technically came at workable answers, since 16<19 and 12<19. There's no"extra credit" for Friend B, even though B's answer was nearer to the goal answer of 19. .

In Bitcoin terms, simultaneous answers happen frequently, but in the end of the day there can only be one winning answer. When multiple simultaneous answers are presented that are equal 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 that has done the work, i.e.

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

Now imagine that I pose the"figure what number I'm thinking of" question, however I am not asking just 3 friends, and I'm 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 quite difficult to guess the right answer.

## What Does Bitcoin Trading History Do?

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 the alphabet. Why is that

In order to understand these letters are doing in the middle of numbers, let's unpack the term"hexadecimal."

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