# A Biased View of 20000 Satoshi

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Let's say you had one legit $20 and one quite good photocopy of that same $20. If someone were to attempt to spend both the true bill and the fake one, someone who took the trouble of looking at both of the invoices' serial numbers would see that they were the same number, and thus one of them had to be fictitious.

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

Once a miner has verified 1 MB (megabyte) worthiness of Bitcoin transactions, they are entitled to win the 12.5 BTC. The 1 MB limit was established by Satoshi Nakamoto, and can be a matter of controversy, as some miners think the block size should be increased to accommodate more information.

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

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

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 have to be the first miner to arrive at the perfect answer to a numeric issue. This process 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 challenging mathematical problems--that is not true at all. What they're doing is trying to be the first miner to come up with 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 is guesswork, you need a lot of computing power in order to get there . To mine , you need to have a higher"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 can mine with your mining rig's hash pace, the site Cryptocompare provides a helpful calculator.

Either way a GPU (graphics processing unit) miner or an application-specific integrated circuit (ASIC) miner. These can run from $500 to the tens click to investigate of thousands. Some miners--especially Ethereum miners--buy individual graphics cards (GPUs) as a cheap method to cobble together mining operations. The photo below is a makeshift, high-tech mining machine. The graphics cards are such rectangular blocks with whirring circles. Note the sandwich twist-ties holding the pictures cards to the metal pole.

Case in point I tell three friends I'm thinking about 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 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'm thinking of the number 19. If Friend A guesses 21they shed 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 closer to the target 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 that are equal to or less than the target number, the Bitcoin network will determine by a simple majority--51%--that miner to honour. Typically, it's the miner that has done the most work, i.e.

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

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

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The number preceding my company has 64 digits. Easy enough to understand so far. As you likely noticed, that number consists not just of numbers, but also letters of the alphabet. Why is that

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

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