# The Facts About Is Bitcoin Mining Profitable Uncovered

In 2009, it had been 50. In 2013, it was 25, at 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 produce.

Here's the catch. In order to get bitcoin miners to really earn bitcoin from verifying transactions, two things must occur. To begin with, they need to confirm 1 megabyte (MB) worth of transactions, which can technically be as small as 1 transaction but are more often a few thousand, depending on how much information 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 referred to as a"proof of work." What they're doing is trying to come up with a 64-digit hexadecimal number, known as a"hash," that's less than or equivalent to the hash.

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In other words, it's a gamble. .

The difficulty level of the most recent block at the time of writing is all about 7,184,404,942,701. That is, the chance of a computer producing a hash below the target is 1 in 7,184,404,942,701 less than 1 in 7 trillion. That level is adjusted every 2016 blocks, or roughly 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 from this network, the difficulty adjusts downward to make mining easier. .

"Say I tell three friends that I'm thinking about a number between 1 and 100, and that 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 first person to figure any number that's less than or equal to the number I am thinking of.

"Let us say I am thinking about the number 19. If Friend A guesses 21, they shed because 21>19. If Friend B guesses 16 and Friend C guesses 12, then they have both theoretically arrived at workable answers, since 16<19 and 12<19. There is no'extra credit' for Friend B, even though B's answer was closer to the target answer of 19. .

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

If 1 in 7 trillion doesn't sound hard enough as is, here is the grab to the catch. Not only do bitcoin miners have to think of the right hash, they also must be the first to do it.

Since bitcoin mining is essentially guesswork, arriving at the ideal answer official statement before another miner has almost everything to do with how fast your computer can create hashes. Only a decade ago, bitcoin miners could be performed competitively on normal desktops. As time passes, however, miners recognized that graphics cards commonly used for video games were more effective at mining than desktops and graphics processing units (GPU) came to dominate the match.

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

Today, bitcoin mining is so aggressive that it can only be done profitably using all the most up-to-date ASICs. When using desktop computers, GPUs, or elderly versions of ASICs, the cost of energy consumption actually surpasses the revenue generated. Even with the newest unit available, one pc is rarely enough to compete with exactly what miners call"mining pools" .

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

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

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