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Cryptocurrency Mining For Dummies. Peter KentЧитать онлайн книгу.

Cryptocurrency Mining For Dummies - Peter  Kent


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the target number — you win!

      Winning the Bitcoin

      You announce to the network that you’ve won. You create a block header for the block, which includes a timestamp, a software version number, the hash of the previous block, and the hash of the block’s transaction’s Merkle tree root. (Never mind, to successfully mine you don’t have to know about Merkle trees.) You then send out your candidate block, with its block header and the header’s hash, onto the network, so other nodes can check it. And check it they do.

      That’s mining!

      So who typically wins these contests? It’s a combination of both chance and computing power. Each time you add a nonce and hash the block header, there’s a mathematically defined chance of winning. It’s low, but possible. Hey, you might win on the first try! (You might, but it’s just not very likely.)

      How then do you increase your chances? You add a nonce and rehash over and over and over, millions of times. Each time you hash, it’s like buying a lottery ticket. So the more lottery tickets you buy, the better your chances. That means the more powerful your mining rigs — the more calculations they can carry out — the more chances you have.

      This process may all sound very complicated but the hard work is carried out by your mining rig and your node software. You’re not going to be sitting down every ten minutes with paper and pencil hashing the block header! You set up the appropriate hardware and software and let it run.

      BITCOIN PRESETS

      All of these preset rules and system guidelines are baked into the software that runs the Bitcoin blockchain. A block contains around 2,000 transactions (it varies slightly depending on how much information is in each transaction). One block is added every ten minutes, more or less. In order to maintain this block emission rate, the software has to adjust its difficulty rules every now and then — every 2,016 blocks, in fact. If it’s taking less than ten minutes for each block, on average — because more computing power is being used for mining, as more miners and mining rigs come online — then the target number will be proportionally reduced, to increase the difficulty. If it’s taking more than ten minutes, though (as the price of Bitcoin drops, fewer people mine), then the target number is increased, reducing the difficulty. Also, every 210,000 blocks — around every four years — the block subsidy is halved. At the time of writing, the subsidy is 6.25BTC, but sometime in 2024, it will drop to 3.125BTC.

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