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

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

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

What miners are doing with those tremendous computers and dozens of cooling fans is guessing in the hash. Miners create these guesses by randomly generating as many"nonces" as possible, as fast 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 first miner whose nonce generates a hash that is less than or equivalent to the target hash is awarded credit for completing that obstruct, and is given the spoils of 12.5 BTC. .

In theory you could Attain the same aim by rolling a 16-sided die 64 days to arrive at random numbers, but why on earth do you want to do this

The screenshot below, taken from the site Blockchain.info, might help you put all this information together at a glance. You are looking at a summary of everything that happened when block #490163 was mined. The nonce that generated the "winning" hash was 731511405. The goal 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 truly want to see all 1768 of those transactions for this block, go to this webpage and scroll down to the heading"Transactions." .

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

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

You'd have to get a speedy mining rig , more realistically, join a mining pool--a group of miners who combine their computing ability and divide the mined bitcoin. Mining pools are comparable to those Powerball clubs whose members buy lottery tickets en masse and consent to share any winnings. More Bonuses A disproportionately high number of cubes are mined by pools rather than by individual miners. .

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

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

Mining rewards are paid to the miner who discovers a solution to the puzzle first, and the probability that a participant will be the one to find the solution is equal to the portion of the total mining power on the network.  Participants with a small percentage of the mining power stand a tiny 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 their explanation block, it could be a long time before that miner finds a block, and also the difficulty going up makes things even worse.  The miner may never recover their investment.  The answer to this problem is mining pools.  Mining pools are run by third parties and coordinate groups of miners.  By working together in a swimming pool and sharing the payouts amongst participants, miners can find a steady flow of bitcoin starting the day that they trigger their miner.  Statistics on some of the mining pools can be seen on Blockchain.info. .

Sure. As mentioned, the easiest way to acquire Bitcoin is to purchase it on an exchange such as Coinbase.com. Alternately, you can always leverage the"pickaxe strategy". This relies on the old saw that during the 1848 California gold rush, the wise investment was not to pan for gold, but rather to create the pickaxes used for mining.

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