# Is Bitcoin Mining Profitable for Beginners

In 2009it 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 entire 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 make.

Here's the catch. In order for bitcoin miners to really earn bitcoin from verifying transactions, two things must occur. To begin with, they need to verify 1 megabyte (MB) worth of transactions, which can technically be as little as 1 transaction but are more often several thousand, depending on how much data each transaction shops.

Second, in order to put in a block of transactions to the blockchain, miners must fix a complex computational science difficulty, also referred to as a"proof of work" What they're doing is trying to think of a 64-digit hexadecimal number, known as a"hash," that's less than or equivalent 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. That is, the chance of a pc producing a hash beneath the goal is 1 in 7,184,404,942,701 less than 1 in seven trillion. That amount is adjusted every 2016 cubes, or about every two 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 off of this network, the difficulty adjusts downward to earn 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 sheet of paper and seal it in an envelope. My friends don't need to guess the specific number, they simply have to be the first person to figure any number that is 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 21, they shed because 21>19. If Friend B supposes 16 and Friend C supposes 12, then they've both theoretically arrived at workable answers, since 16<19 and 12<19. There's no'extra credit' for Friend B, even though B's answer was closer to the goal answer of 19. .

"Now imagine I present the'imagine what number I am thinking of' question, but I am not asking just 3 friends, and I am not thinking of a number between 1 and 100. Rather, I'm 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 quite difficult 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 have to come up with the right hash, they also must be the very first to perform 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. Only a decade ago, bitcoin miners could be carried out competitively on normal desktops. Over time, however, miners recognized that graphics cards commonly utilized for video games were more capable of mining than desktops and graphics my link processing units (GPU) came to dominate the game.

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

Nowadays, bitcoin mining is so aggressive that it can only be done profitably with the most up-to-date ASICs. When using desktop computers, GPUs, or older versions of ASICs, the expense of energy consumption actually surpasses the revenue generated. Even with the index newest unit available, one pc is rarely enough to compete with what 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 roughly 80% to 90% of bitcoin computing power. .

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Between 1 in 7 trillion chances, scaling difficulty levels, and also the massive network of users verifying transactions, one block of transactions is confirmed 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 our website 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.