# How To Trade Bitcoin for Dummies

In 2009it had been 50. In 2013, it was 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 valuable over time but also more costly for miners to produce.

Here is the catch. In order for bitcoin miners to really earn bitcoin from verifying transactions, two things have to occur. To begin with, they need to verify 1 megabyte (MB) value of transactions, which can theoretically be as little as 1 transaction but are far more often several thousand, depending on how much information each transaction stores.

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Second, in order to put in a block of transactions to the blockchain, miners should solve a intricate computational math problem, also referred to as a"proof of work." What they are actually doing is trying to come up with a 64-digit hexadecimal number, known as a"hash," that is less than or equivalent 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 just 1 in 7,184,404,942,701 less than 1 in 7 trillion. That amount is corrected every 2016 cubes, or roughly every 2 weeks, with the aim of keeping rates of mining constant.

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

"Say I tell three friends that I'm thinking of a number between 1 and 100, and I write that number on a sheet of paper and seal it in an envelope. My friends don't have to guess the exact number, they simply must 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 am 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 have both technically came at workable answers, since 16<19 and 12<19. There is Check This Out no'extra credit' for Friend you could try here B, even though B's answer was closer to the goal answer of 19. .

"Now imagine I present the'imagine what number I'm thinking of' question, but 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 am thinking of a 64-digit hexadecimal number. Now you see that it's going to be extremely hard to guess the right answer." .

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

Since bitcoin mining is essentially guesswork, arriving at the ideal answer before another miner has 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. As time passes, however, miners realized that pictures cards commonly used for video games were more effective at mining than desktops and graphics processing units (GPU) came to dominate the game.

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

Today, bitcoin mining is so aggressive it can only be done profitably using the most up-to-date ASICs. When using desktop computers, GPUs, or elderly models of ASICs, the expense 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 who 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 chances, scaling difficulty levels, and the massive network of consumers verifying transactions, one block of transactions is confirmed roughly every 10 minutes. But its important to keep in mind that 10 minutes is a target, not a guideline.

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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 can be processed in 10 minutes.