# The 9-Minute Rule for Is Bitcoin Mining Profitable

In 2009, it was 50. In 2013, it had been 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 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 costly for miners to produce.

Here is the catch. In order to get bitcoin miners to actually earn bitcoin from verifying transactions, two things must occur. To begin with, they need to confirm 1 megabyte (MB) value of transactions, which can technically be as small as 1 transaction but are far more often a few thousand, depending on how much data each transaction stores.

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Second, in order to add a block of transactions to the blockchain, miners should fix a complex computational science difficulty, also called a"proof of work" What they're doing is trying to come up with a 64-digit hexadecimal number, known as a"hash," that is less than or equivalent to the hash.

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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. That is, the chance of a pc producing a hash below the target is just 1 in 7,184,404,942,701 less than 1 in 7 trillion. That level is corrected every 2016 blocks, or about every 2 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 this network, the problem adjusts downward to make mining easier. .

"Say I tell three friends that I'm thinking of 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 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 am thinking of.

"Let us say I am thinking of the number 19. If Friend A guesses 21, they lose because 21>19. If Friend B supposes 16 and Friend C supposes 12, then they've both technically came at viable answers, because 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 I pose the'guess what number I'm thinking of' question, however I am not asking only 3 friends, and I am not thinking of a number between 1 and 100. Rather, I am asking millions of would-be miners and I'm thinking about a 64-digit hexadecimal number. Now you see that it is going to be extremely hard to guess the ideal answer." .

If check this site out 1 in seven trillion doesn't sound difficult enough as is, here is the grab to the catch. Not only do bitcoin miners need to come up with the right hash, but they also must be the first to perform 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 produce hashes. Only a decade ago, bitcoin miners could be performed competitively on normal desktop computers. As time passes, however, miners recognized that pictures cards commonly utilized for video games were more capable of mining than desktops and graphics processing units (GPU) came to dominate the game.

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

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

An mining pool is a group of miners that combine their computing power and split the mined bitcoin between participants. A disproportionately high number of blocks are mined by pools rather than by individual miners. In July 2017, mining pools and companies represented roughly 80% to 90 percent of YOURURL.com bitcoin computing power. .

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Between 1 in 7 trillion odds, scaling difficulty levels, and the huge 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 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 every 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 see here now can be processed in 10 minutes.