# Is Bitcoin Mining Profitable for Dummies

In 2009, it was 50. In 2013, it had been 25, in the time of writing it's 12.5, and sometime in the center 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 is the catch. In order for bitcoin miners to actually earn bitcoin from verifying transactions, two things have to occur. First, they must verify 1 megabyte (MB) value of transactions, which can technically be as small as 1 transaction but are more often several thousand, depending on how much information each transaction stores.

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Second, in order to add a block of transactions to the blockchain, miners should solve a intricate computational science difficulty, also referred to as a"proof of labour ." What they're actually doing is trying to come up with a 64-digit hexadecimal number, known as a"hash," that's less than or equal 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 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 amount is corrected every 2016 blocks, or roughly every 2 weeks, with the aim of keeping rates of mining constant.

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The reverse is also true. If computational power has been taken from the network, the difficulty adjusts downward to make mining simpler. .

"Say I tell three friends that 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 exact number, they simply have to be the very first person to figure any number that is less than or equal to the number I'm thinking of.

"Let's say I am thinking of the number 19. If Friend A guesses 21, they shed because 21>19. If Friend B supposes 16 and Friend C guesses 12, then they've both theoretically arrived at viable answers, because 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 present the'guess what number I am thinking of' question, however I am not asking just three friends, and I'm not thinking of a number between 1 and 100. Instead, I'm asking millions of would-be miners and I'm thinking of 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 difficult enough as is, here's the grab to the grab. Not only do bitcoin miners have to think of the right hash, but they also have to be the first to perform it.

Since bitcoin mining is essentially guesswork, arriving at the right answer before another miner has almost everything to do with how fast your computer can produce hashes. Only a decade ago, bitcoin miners could be carried out competitively on normal desktops. Over time, however, miners recognized that pictures cards commonly utilized 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 to the tens of thousands. .

Nowadays, 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 older models of ASICs, the cost of energy consumption actually surpasses the revenue generated. Even with the newest unit available, one computer is rarely enough to compete with what what miners call"mining pools." .

A mining pool is a group of miners that combine their computing ability and split 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% of bitcoin computing power. .

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Between 1 in 7 trillion odds, directory scaling difficulty levels, and also 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 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. 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.