# What Does Big Coins Do?

In 2009it was 50. In 2013, it was 25, in the time of writing it is 12.5, and sometime in the center of 2020 it will halve to 6.25. .

At this speed 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 costly for miners to produce.

Here is the catch. In order to get bitcoin miners to really earn bitcoin from verifying transactions, two things have to happen. First, they must confirm 1 megabyte (MB) value of transactions, which can technically be as little as 1 transaction but are far more often a few thousand, depending on how much information each transaction shops.

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Second, in order to put in a block of transactions to the blockchain, miners must solve a complex computational science difficulty, also called a"proof of work" What they are doing is trying to think of 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 gamble. .

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 computer producing a hash beneath the goal is 1 in 7,184,404,942,701 less than 1 in 7 trillion. That level is adjusted every 2016 cubes, or about every 2 weeks, with the goal of keeping rates of mining constant.

The opposite is also true. If computational power is taken off of this network, the problem 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 piece of paper and seal it in an envelope. My friends don't have to guess the exact number, they just have to be the first person to guess any number that is less than or equal to the number I am thinking of.

"Let's say I'm thinking of the number 19. If Friend A guesses 21, they lose because 21>19. If Friend B guesses 16 and Friend C supposes 12, then they have both technically came at viable answers, since 16<19 and 12<19. There's no'extra credit' for Friend B, even though B's answer was nearer to the goal 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'm not thinking of a number between 1 and 100. Instead, I am asking millions of prospective miners and I'm thinking of a 64-digit hexadecimal number. Now you see that it's going to be quite difficult to guess the right answer." .

If 1 in 7 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 ideal 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 everything to do with how fast your computer can produce hashes. Only click a decade ago, bitcoin miners could be carried out competitively on normal desktops. As time passes, go to website however, miners realized that pictures 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. .

Nowadays, bitcoin mining is so aggressive that 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 exceeds the revenue generated. Even with the newest unit available, one pc is seldom enough to compete with what what miners call"mining pools." .

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

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Between 1 in 7 trillion odds, scaling difficulty levels, and the huge network of consumers verifying transactions, one block of transactions is verified roughly every 10 minutes. However, its important to remember that 10 minutes is a target, not a guideline.

#### Is Bitcoin Mining Profitable for Dummies

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 users 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.