# Things about Is Bitcoin Mining Profitable

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

At this speed 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 costly for miners to produce.

Here is the catch. In order to get bitcoin miners to actually earn bitcoin from verifying transactions, two things have to occur. First, they need to verify 1 megabyte (MB) worth of transactions, which can technically be as little as 1 transaction but are far more often several thousand, depending on how much information each transaction stores.

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Second, in order to put in a block of transactions to the blockchain, miners must fix a complex computational math problem, also called a"proof of work." What they are actually doing is trying to come up with a 64-digit hexadecimal number, called a"hash," that is less than or equal to the hash.

In other words, it is a bet. .

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 computer producing a hash beneath the goal is just 1 in 7,184,404,942,701 less than 1 in seven trillion. That level is corrected every 2016 blocks, or roughly every two weeks, with the aim of keeping rates of mining constant.

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The reverse is also correct. If computational power has been taken off of this network, the problem adjusts downward to make mining easier. .

"Say I tell three friends I'm thinking about 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 simply must be the first person to guess any number that's less than or equal to the number I'm thinking of.

"Let us say I am thinking about the number 19. If Friend A guesses 21they shed because 21>19. If Friend B guesses 16 and Friend C guesses 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 I pose the'guess what number I am thinking of' question, however I am not asking only three 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 check out this site that it is going to be extremely hard to guess the right answer." .

If 1 in seven trillion doesn't sound hard enough as is, here's the grab to the grab. Not only do bitcoin miners have to think of the ideal hash, but they click here for more also have to be the very first to perform it.

Since bitcoin mining is essentially guesswork, arriving at the ideal answer before another miner has almost everything to do with how fast your computer can create hashes. Just a decade ago, bitcoin miners could be carried out competitively on normal desktops. As time passes, however, miners recognized that graphics cards commonly used for video games tend to be more capable of 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. .

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

An mining pool is a group of miners who combine their computing ability and split the mined bitcoin between participants. A disproportionately large number of blocks 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 chances, scaling difficulty levels, and the massive network of users verifying transactions, one block of transactions is verified roughly every 10 minutes. But its important to remember that 10 minutes is a target, 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.