「Mining」を編集中
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それは努力を必要とし、それは参加することを望む誰でも新しい単位をゆっくりと利用できるようにする。重要な相違点は、[[制御供給|供給]]が採掘量に依存しないことです。一般的に、全マイナーハッシュパワーを変更しても、長期的に作成されるビットコインの数は変わりません。 | それは努力を必要とし、それは参加することを望む誰でも新しい単位をゆっくりと利用できるようにする。重要な相違点は、[[制御供給|供給]]が採掘量に依存しないことです。一般的に、全マイナーハッシュパワーを変更しても、長期的に作成されるビットコインの数は変わりません。 | ||
| − | == | + | == Difficulty == |
| − | === | + | === The Computationally-Difficult Problem === |
| − | + | Mining a block is difficult because the SHA-256 hash of a block's header must be lower than or equal to the [[Target|target]] in order for the block to be accepted by the network. This problem can be simplified for explanation purposes: The hash of a block must start with a certain number of zeros. The probability of calculating a hash that starts with many zeros is very low, therefore many attempts must be made. In order to generate a new hash each round, a [[Nonce|nonce]] is incremented. See [[Proof of work]] for more information. | |
| − | === | + | |
| − | [[ | + | === The Difficulty Metric === |
| − | + | The [[Difficulty|difficulty]] is the measure of how difficult it is to find a new block compared to the easiest it can ever be. The rate is recalculated every 2,016 blocks to a value such that the previous 2,016 blocks would have been generated in exactly one fortnight (two weeks) had everyone been mining at this difficulty. This is expected yield, on average, one block every ten minutes. | |
| − | === | + | |
| − | + | As more miners join, the rate of block creation increases. As the rate of block generation increases, the difficulty rises to compensate, which has a balancing of effect due to reducing the rate of block-creation. Any blocks released by malicious miners that do not meet the required [[Target|difficulty target]] will simply be rejected by the other participants in the network. | |
| − | + | ||
| + | === Reward === | ||
| + | When a block is discovered, the discoverer may award themselves a certain number of bitcoins, which is agreed-upon by everyone in the network. Currently this bounty is 12.5 bitcoins; this value will halve every 210,000 blocks. See [[Controlled Currency Supply]]. | ||
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| + | Additionally, the miner is awarded the fees paid by users sending transactions. The fee is an incentive for the miner to include the transaction in their block. In the future, as the number of new bitcoins miners are allowed to create in each block dwindles, the fees will make up a much more important percentage of mining income. | ||
==鉱業の生態系== | ==鉱業の生態系== | ||
