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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 target is just 1 in 7,184,404,942,701 less than 1 in 7 trillion. That level is corrected every 2016 blocks, or about every two weeks, with the goal of keeping rates of mining constant.

The opposite is also true. If computational power has been taken from this network, the problem adjusts downward to earn mining simpler. .

"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 need to guess the exact number, they just must be the first person to figure any number that's less than or equal to this number I am thinking of.

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"Let us 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, because 16<19 and 12<19. There is no'extra credit' for Friend B, even though B's answer was closer to the goal answer of 19. .

"Now imagine I pose the'guess what number I'm thinking of' question, but I'm not asking just three friends, and I am not thinking of a number between 1 and 100. Instead, I'm asking millions of would-be miners and I'm thinking about a 64-digit hexadecimal number. Now you see that it's going to be quite difficult to guess the ideal answer." .

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If 1 in 7 trillion doesn't sound hard enough as is, here's the catch to the grab. Not only do bitcoin miners have to come up with the ideal hash, they also have to be the very first to do 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 create hashes. Only a decade ago, bitcoin miners could be carried out competitively on normal desktops. Over time, however, miners realized that pictures cards commonly utilized for video games tend to be more effective at mining than desktops and graphics processing units (GPU) came to dominate the game.

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

Today, bitcoin mining is so competitive it can only content be done profitably using all the most up-to-date ASICs. When using desktop computers, GPUs, or elderly versions of ASICs, the expense of energy consumption actually exceeds the revenue generated. Even with the newest unit at your disposal, one computer is seldom enough to compete with exactly what miners call"mining pools" .

An mining pool is a group of miners that combine their computing ability and split the mined bitcoin between participants. A disproportionately large number of blocks 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. .

Between 1 in 7 trillion odds, scaling difficulty levels, and also the massive network of users verifying transactions, one block of transactions is verified roughly every 10 minutes. But 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 every 10 minutes. Since the network of bitcoin consumers continues to grow, however, check my blog the number of transactions made in 10 minutes will eventually exceed the number of transactions which can be processed in 10 minutes.

This issue at the heart of the bitcoin protocol is known as scaling. Even though bitcoin miners generally agree that something must be done to deal with scaling, there is less consensus about how can it. At the time of writing, there are two big solutions to this scaling problem, either (1) to decrease the amount of information needed to confirm each block or (2) to increase the number of transactions that each block can save.

Solution 2 would deal with scaling by allowing for much more information to be processed each 10 minutes. .

In July 2017, bitcoin miners and mining companies representing approximately 80% to 90 percent of the networks computing power required to incorporate a program that would reduce the amount of data needed to confirm each block. That is, they went with Solution 1.

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The program that miners voted to increase the bitcoin protocol is known as a segregated witness, or SegWit. This term is an amalgamation of Segregated, meaning to separate, and Witness, which describes signatures on a bitcoin transaction. Segregated Witness, then, means to separate transaction signatures from a block and attach them within an extended block.