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If you are mining Bitcoin, you do not need to calculate the entire value of the 64-digit number (the hash). I repeat: You do not need to calculate the total value of a hash.

Remember that ELI5 analogy, where I wrote the number 19 on a piece of paper and put it in a sealed envelope

In Bitcoin mining terms, that metaphorical undisclosed number in the envelope is known as the target hash.

What miners are doing with those tremendous computers and dozens of cooling fans is guessing at the hash. Miners create these guesses by randomly generating as many"nonces" as possible, as quickly as possible. A nonce is short for"number only used once," and the nonce is the key to generating these 64-bit hexadecimal numbers I keep talking about.

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The primary miner whose nonce generates a hash which is less than or equivalent to the target hash is awarded credit for completing that block, and is given the spoils of 12.5 BTC. .

In theory you can achieve the Exact Same goal by rolling a 16-sided die 64 times to arrive at random numbers, but why on earth do you want to do that

The screenshot below, taken from the website Blockchain.info, might help you put all this information together in a glance. You're looking at a summary of everything that happened when obstruct #490163 was mined. The nonce that generated the "winning" hash was 731511405. The target hash is shown on the top.

As you see here, their contribution into the Bitcoin community is they confirmed 1768 transactions for this cube. If you really want to find all 1768 of these transactions for this block, then go to this page and scroll down to the heading"Transactions." .

There is no minimum goal, but there is a maximum goal set by the Bitcoin Protocol. No target can be greater than this number:

Here are some examples of randomized hashes and the criteria for if they will lead to success for the miner:

You would need to get a speedy mining rig or, more realistically, join a mining pool--a group of miners that combine their computing ability and divide the mined bitcoin. Mining pools are similar to those Powerball clubs whose members buy lottery tickets en masse and agree to discuss any winnings. A disproportionately large number of blocks are mined by pools rather than by individual miners. .

In other words, it's literally only a numbers game.  You cannot imagine the pattern or make a prediction based on previous goal hashes. The difficulty level of the most recent block at the time of writing is 2,874,674,234,416, i.e. the chance of any given nonce producing a hash below the target is just 1 in 2,874,674,234,416--significantly less than 1 in two trillion. .

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The aforementioned website Cryptocompare delivers a very helpful calculator that allows you to plug in numbers like your hash speed, power costs etc., to estimate the costs and benefits.

Mining rewards are paid to the miner who discovers a solution to the puzzle , and also the likelihood that a participant is going to be the one to find the solution is equivalent to the portion of the total mining power on the network.  Participants which have a small percentage of their mining power stand a very small chance of discovering the next block on their own.  For instance, a mining card that one could buy to get a few thousand dollars would represent less than 0.001% of the network's mining energy.  With such a small chance at finding the next block, it might be a long time before that miner finds a block, and the difficulty going up makes things even worse.  The miner may never recover their investment.  The answer to this predicament is mining pools.  Mining pools are run by third parties and coordinate groups of miners.  By working together in a pool and sharing the payouts amongst participants, miners can find a steady flow of bitcoin starting the afternoon they activate their miner.  Statistics on some of the mining pools can be seen on Blockchain.info. .

Sure. As discussed, the simplest way to get Bitcoin is to buy it on an exchange such as Coinbase.com. Alternately, you can always click here for more leverage the"pickaxe plan". This relies on the old saw that during the 1848 California gold rush, the smart investment was not to pan for gold, but instead to make the pickaxes used for mining.

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In a crypto context, the pickaxe equivalent are a company that manufactures equpiment used for Bitcoin mining. You can start looking into companies which make ASICs miners or GPU miners. .