比特幣算力 (Bitcoin Hashrate)
什麼是比特幣哈希率?
比特幣哈希率是比特幣挖礦過程相關的指標。
比特幣挖礦是解決複雜數學難題並獲得比特幣獎勵的過程。比特幣挖礦的過程確保了網絡的安全，並確認了區塊鏈上的交易是正確的。
因此，挖礦哈希率是比特幣的一個關鍵安全指標。這是因為在網絡上運行的散列能力（可以被認為是計算能力）級別越高，就越難壓制和攻擊網絡。
比特幣哈希率是如何衡量的
BTC 哈希率通常計算為每秒哈希數 (h/s)。
哈希單元可以用大小來表示：
| Hashrate Units | Hash Size | Hashes Per Second |
|---|---|---|
| H/s (Hash) | 1 | 1 |
| kH/s (KiloHash) | 1,000 | 1 千 |
| MH/s (MegaHash) | 1,000,000 | 100 萬 |
| GH/s (GigaHash) | 1,000,000,000 | 10 億 |
| TH/s (TeraHash) | 1,000,000,000,000 | 1 兆 |
| PH/s (PetaHash) | 1,000,000,000,000,000 | 1000 兆 |
| EH/s (ExaHash) | 1,000,000,000,000,000,000 | 100 京 |
| ZH/s (ZettaHash) | 1,000,000,000,000,000,000,000 | 10 垓 |
| YH/s (YottaHash) | 1,000,000,000,000,000,000,000,000 | 1 秭 |
Those are some big numbers there! These are useful to know due to the number of hashes happening on the network being so large.
如果我們假設比特幣會隨著時間的推移繼續被採用，那麼隨著網絡規模和功率的增加，哈希率應該會繼續增加。
通過查看開采的區塊數量和當前區塊難度，可以估算比特幣網絡的哈希算力。
由於解決數學問題以發現新區塊的過程在比特幣礦工之間存在競爭，因此區塊發現的頻率具有一定的隨機性。因此，原始哈希率數據可能非常不穩定。
為此，我們提供了顯示網絡哈希率和原始數據的 7 天移動平均數據。
哈希率對投資者有何用處？
如果比特幣網絡上的哈希率很高，則表明該網絡安全且健康。這讓不想投資不安全網絡的投資者感到安心。
哈希率的大幅下降可能由於各種原因而發生，但往往代表網絡發生變化或存在風險。在熊市中，一些礦工可能難以產生利潤，所以關閉他們的挖礦設備。大規模關閉的情況這會顯著降低哈希率。
導致哈希率大幅下降的一個例子是中國政府禁止比特幣開採。該事件導致中國礦工將他們的挖礦設備轉移到中國境外。這個過程導致哈希率在短期內大幅下降。
哈希率指標可以用作投資者其他比特幣指標的基礎，例如 Hash Ribbons indicator。
What Is This Chart Showing?
This Bitcoin live chart shows the increases and decreases in mining difficulty over time for bitcoin miners as they try to mine for new blocks.
Bitcoin difficulty is a statistical measurement that identifies how many hashes need to be generated to find a valid solution to solve the next Bitcoin block. Miners that are able to find the solution earn the mining reward.
Change in Bitcoin Mining Difficulty
The algorithm in the source code of Bitcoin is what actually controls the pace of change for mining difficulty, as there is no centralized owner of Bitcoin. Its calculations for difficulty change are dependent on the amount of competition in the network mining for new blocks.
The changes in mining difficulty ensure that new blocks are generally discovered steadily over time, approximately once every 10 minutes.
This steady mining of blocks ensures that the amount of bitcoin entering the network through mining is consistent over time, meaning that its inflation rate can be easily forecasted. To many, this is very appealing when compared to fiat currencies that can have their rate of supply manually adjusted by centralized entities.