# Some Ideas on Is Bitcoin Mining Profitable You Need To

In 2009, it was 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 speed of halving, the total number of bitcoin in circulation will approach a limit of 21 million, making the currency more scarce and precious over time but also more costly for miners to make.

Here's the catch. In order for bitcoin miners to actually earn bitcoin from verifying transactions, two things must occur. First, they must confirm 1 megabyte (MB) worth of transactions, which can theoretically be as little as 1 transaction but are far more often several thousand, depending on how much data each transaction stores.

Second, in order to put in a block of transactions to the blockchain, miners should solve a intricate computational science difficulty, 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's less than or equal to the target 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 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 7 trillion. That level is corrected every 2016 cubes, or roughly every two weeks, with the goal of keeping rates of mining constant.

The reverse is also correct. If computational power is taken off of the 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 I write that number on a piece of paper and seal it in an envelope. My friends don't have to guess the exact number, they just must be the very first person to figure any number that's less than or equal to this number I am thinking of.

"Let us say I'm thinking of the number 19. If Friend A guesses 21they lose because 21>19. If Friend B supposes 16 and Friend C supposes 12, then they've both technically came at workable answers, since 16<19 and 12<19. There is no'extra credit' for Friend B, even though B's answer was nearer to the goal answer of 19. .

"Now imagine that I pose the'imagine what number I am thinking of' question, however I'm not asking just three friends, and I'm not thinking of a number between 1 and 100. Instead, 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 quite hard to guess the right answer." .

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

Because bitcoin mining is essentially guesswork, arriving at the ideal answer before another miner has almost everything to do with how fast your computer can produce hashes. Just a decade ago, bitcoin miners could be performed competitively on normal desktop computers. Over time, however, miners recognized that graphics cards commonly used for video games tend to be 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 competitive it can only be done profitably using all the most up-to-date ASICs. When using desktop computers, GPUs, or older versions of ASICs, the cost of energy consumption actually surpasses the revenue generated. Even with the newest unit at your disposal, one computer is rarely enough to compete with exactly what miners call"mining pools" .

An mining pool is a group of miners that 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 percent of bitcoin computing power. .

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Between 1 in 7 trillion chances, scaling difficulty levels, and also the massive network read more of users verifying transactions, one block of transactions is verified roughly every 10 minutes. However, 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 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 which can be processed in 10 minutes.