# Master Coin - The Facts

In 2009, it had been 50. In 2013, it had been 25, in the time of writing it is 12.5, and sometime in the middle of 2020 it will halve to 6.25. .

At this rate of halving, the total number of bitcoin in circulation will approach a limit of 21 million, making the currency more scarce and valuable over time but also more expensive for miners to make.

Here's the catch. In order for bitcoin miners to really earn bitcoin from verifying transactions, two things must occur. To begin with, they need to confirm 1 megabyte (MB) value of transactions, which can theoretically be as small as 1 transaction but are far more often several thousand, depending on how much data each transaction shops.

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Second, in order to put in a block of transactions to the blockchain, miners must solve a intricate computational math problem, also called a"proof of labour " What they're actually doing is trying to come up with a 64-digit hexadecimal number, called a"hash," that is less than or equivalent to the target hash.

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In other words, it is a gamble. .

The difficulty level of the most recent block at the time of writing is all about 7,184,404,942,701. In other words, the chance of a pc producing a hash beneath the target is 1 in 7,184,404,942,701 less than 1 in 7 trillion. That level is corrected every 2016 cubes, or about every two weeks, with the aim of keeping rates of mining constant.

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The opposite is also true. If computational power has been taken off of the network, the difficulty adjusts downward to earn mining easier. .

"Say I tell three friends that I'm thinking about a number between 1 and 100, and I write that number on a piece of paper and seal it in an envelope. My friends don't have to guess the specific number, they simply must be the very first person to figure any number that is less than or equal to this number I'm thinking of.

"Let's say I am thinking about the number 19. If Friend A guesses 21, they lose because 21>19. If Friend B guesses 16 and Friend C supposes 12, then they have 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 target answer of 19. .

"Now imagine that I present the'guess what number I'm thinking of' question, but I'm not asking only 3 friends, and I am not thinking of a number between 1 and 100. Instead, I'm asking millions of prospective miners and I am thinking of a 64-digit hexadecimal number. Now you see that it's going to be extremely hard to guess the ideal answer." .

If 1 in seven trillion doesn't sound difficult enough as is, here's the catch to the grab. Not only do bitcoin miners need to think of the right hash, they also have to be the first to do it.

Since bitcoin mining is essentially guesswork, arriving at the right answer before another miner has everything to do with how fast your computer can create hashes. Just a decade ago, bitcoin miners could be carried out competitively on normal desktop computers. Over time, however, miners realized that pictures cards commonly utilized for video games tend to be more effective at mining than desktops and graphics processing units (GPU) came to dominate the match. moved here

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These can run from \$500 to the tens of thousands. .

Nowadays, bitcoin mining is so aggressive that it can only be done profitably with the latest up-to-date ASICs. When using desktop computers, GPUs, or older models of ASICs, the expense of energy consumption actually exceeds the revenue generated. Even with the newest unit available, one computer is rarely enough to compete with what what miners call"mining pools." .

An mining pool is a group of miners that combine their computing ability and divide the mined bitcoin between participants. A disproportionately large number of cubes are mined by pools rather than by individual miners. In July 2017, mining pools and companies represented approximately 80% to 90 percent of bitcoin computing power. .

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Between 1 in 7 trillion odds, scaling difficulty levels, and the huge network of consumers verifying transactions, one block of transactions is verified roughly every 10 minutes. However, its important to keep in mind that 10 minutes is a goal, not a guideline.

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The bitcoin network can process about seven transactions per second, with transactions being logged in the blockchain each 10 minutes. As the network of bitcoin consumers continues to grow, however, the number of transactions made in 10 minutes will eventually exceed the number of transactions which can be processed in 10 minutes.