比特幣減半重塑挖礦經濟與安全

比特幣減半定於明天美國東部時間上午 9:31 進行，礦工的區塊獎勵將減少 50%，引發人們對比特幣安全預算的擔憂。雖然交易費用定期飆升，但其波動性和對投機活動的依賴對礦商的獲利能力構成了挑戰。儘管減半有可能限制供應，但由於供應量減少幅度較小且算力彈性增加，對比特幣價格的影響可能會減弱。如果交易費用不大幅增加或代幣價格上漲，哈希率可能會收縮，從而威脅比特幣的安全，除非 L2 解決方案或區塊空間的替代用例成為可行的解決方案。

Bitcoin's Halving: A Paradigm Shift in Mining Economics and Security

比特幣減半：礦業經濟與安全的典範轉移

April 17, 2024

2024 年 4 月 17 日

Tomorrow, the highly anticipated quadrennial Bitcoin Halving is scheduled to occur at approximately 9:31 AM EST, marking a significant event in the cryptocurrency's history. This algorithmic adjustment will reduce the block rewards paid to miners by 50%, significantly altering the economic landscape of Bitcoin mining.

明天，備受期待的四年一度的比特幣減半計劃於美國東部時間上午 9:31 左右發生，這標誌著加密貨幣歷史上的一個重大事件。這項演算法調整將使支付給礦工的區塊獎勵減少 50%，從而顯著改變比特幣挖礦的經濟格局。

Implications for Miner Profitability

對礦工獲利能力的影響

Bitcoin miners, driven primarily by profit motives, will only continue operating if the combined revenue from inflationary block rewards and transaction fees exceeds their operational costs. The Halving will drastically curtail these emissions, forcing miners to rely heavily on transaction fees to sustain their operations.

主要受利潤動機驅動的比特幣礦商只有在通膨性區塊獎勵和交易費用的總收入超過其營運成本時才會繼續運作。減半將大幅減少這些排放，迫使礦工嚴重依賴交易費來維持營運。

Volatility of Transaction Fees

交易費用的波動性

While transaction fees have fluctuated significantly in the past year, reaching up to 74% of the block reward during the height of BRC-20 mania, they exhibit extreme volatility. This revenue stream has historically demonstrated periods of extreme lows, with transaction fees comprising less than 1% of the block reward for nearly six months following the previous peak.

儘管交易費用在過去一年中波動很大，在 BRC-20 狂熱高峰期間達到了區塊獎勵的 74%，但它們表現出極大的波動性。從歷史上看，這一收入流曾經歷過極低時期，在上一個高峰之後的近六個月內，交易費用佔區塊獎勵的比例還不到 1%。

Speculative Demand: A Double-Edged Sword

投機需求：一把雙面刃

Speculative demand for various forms of tokens and non-fungible tokens (NFTs) on Bitcoin has been a key driver of transaction fees. This demand surged alongside a rally in risk markets in late October, and again this month as traders bet on the emergence of Runes, a novel fungible token standard on Bitcoin.

對比特幣各種形式代幣和不可替代代幣（NFT）的投機需求一直是交易費用的關鍵驅動因素。這種需求隨著 10 月底風險市場的上漲而激增，本月又因交易員押注符文（一種新型的比特幣可替代代幣標準）的出現而飆升。

However, as evidenced by numerous boom-and-bust cycles in the cryptocurrency market, speculative fervor is often short-lived. NFTs built on Ethereum experienced a similar decline in value and liquidity during the previous bear market, despite initially commanding exorbitant prices.

然而，正如加密貨幣市場的無數繁榮與蕭條週期所證明的那樣，投機熱情往往是短暫的。儘管最初價格過高，但基於以太坊構建的 NFT 在上一次熊市期間也經歷了類似的價值和流動性下降。

The Plight of Memecoins and Vaporware

Memecoin 和 Vaporware 的困境

In recent months, traders seeking extraordinary returns flocked to memecoins and other vaporous assets. However, the past two weeks have witnessed a precipitous decline in the prices of these tokens, including those associated with Runes. This cycle is likely to repeat, leaving many HODLers disappointed as their investments evaporate into thin air.

近幾個月來，尋求非凡回報的交易者紛紛湧向迷因幣和其他流動資產。然而，過去兩週，這些代幣的價格急劇下跌，包括與符文相關的代幣。這種循環很可能會重複，讓許多持有者感到失望，因為他們的投資化為泡影。

Zero Assumption for Transaction Fees

交易費用零假設

Given the extreme volatility and unpredictable nature of Bitcoin's transaction fee revenue, analysts often simplify this value to zero for ease of analysis. This assumption underscores the precarious situation miners will face after the Halving.

鑑於比特幣交易費收入的極端波動性和不可預測性，分析師通常將該值簡化為零，以便於分析。這個假設凸顯了礦工在減半後將面臨的不穩定處境。

Economic Equilibrium: An Elusive Goal

經濟均衡：一個難以實現的目標

In previous Halvings, Bitcoin miners have never achieved an equilibrium where they earn more BTC-denominated rewards. Instead, the network's hash rate, a measure of computing power securing the network, typically declines after the event before rebounding as the supply restriction leads to price appreciation, attracting more miners despite their reduced BTC earnings.

在先前的減半中，比特幣礦工從未達到獲得更多以比特幣計價的獎勵的平衡。相反，網路的哈希率（衡量網路安全的運算能力的指標）通常會在事件發生後下降，然後隨著供應限制導致價格升值而反彈，儘管比特幣收益減少，但仍然吸引了更多礦工。

Halving Impact: Smaller Than Ever

減半影響：比以往任何時候都小

This Halving, however, presents a different scenario. The reduction in block emissions will be the smallest yet, at 3.125 BTC per block, resulting in a daily supply reduction of approximately 450 BTC, or $27M at current market prices.

然而，這次減半呈現出不同的情況。區塊排放量的減少將是迄今為止最小的，為每個區塊 3.125 BTC，導致每日供應量減少約 450 BTC，即以當前市場價格計算 2700 萬美元。

Implications for Market Price and Security

對市場價格和安全的影響

While the supply reduction from this Halving is far smaller than in the past, it will still place significant pressure on miners. The consensus expects a prolonged contraction in the network's hash rate, potentially compromising Bitcoin's security.

雖然本次減半帶來的供應量減少幅度遠小於過去，但仍會對礦商造成巨大壓力。共識預計網路算力將長期收縮，這可能會損害比特幣的安全。

Hope for Layer-2 Solutions

對第 2 層解決方案的希望

Bitcoin enthusiasts pin their hopes on Layer-2 (L2) solutions to mitigate this security risk. These solutions aim to increase transaction throughput on the Bitcoin network, potentially generating additional revenue for miners. However, the majority of these chains are still in their early stages of development, and even if fully operational, their transaction fees are unlikely to fully offset the loss of emissions.

比特幣愛好者將希望寄託在第 2 層 (L2) 解決方案上，以減輕這種安全風險。這些解決方案旨在提高比特幣網路的交易吞吐量，從而有可能為礦工帶來額外收入。然而，這些鏈中的大多數仍處於發展的早期階段，即使全面運營，其交易費用也不太可能完全抵消排放損失。

Ethereum's L2s: A Cautious Precedent

以太坊的 L2：一個謹慎的先例

Ethereum's L2s, which are more mature than Bitcoin's, generated only $33M in fees to the Ethereum mainnet in February 2024, roughly equivalent to one day of lost miner revenue on Bitcoin. This suggests that L2s alone may not be sufficient to solve the problem.

以太坊的 L2 比比特幣更成熟，2024 年 2 月僅向以太坊主網產生了 3,300 萬美元的費用，大致相當於比特幣礦工一天收入的損失。這表明僅 L2 可能不足以解決問題。

A Combination of Factors Needed

所需因素的組合

To maintain the same level of hash rate post-Halving, Bitcoin likely requires a combination of increased transaction fees and a higher token price. However, both factors face headwinds going forward.

為了在減半後保持相同的算力水平，比特幣可能需要增加交易費用和更高的代幣價格。然而，這兩個因素未來都面臨阻力。

Price Suppression and Instability

價格壓制和不穩定

The Halving is often seen as a catalyst for price appreciation, but a failure of historical patterns to hold could shake bearish sentiment. The current downturn in Bitcoin's price, coupled with the lack of viable L2 solutions, threatens to extinguish speculative on-chain activity, further eroding miner revenue.

減半通常被視為價格上漲的催化劑，但歷史模式的失敗可能會動搖看跌情緒。目前比特幣價格的低迷，加上缺乏可行的 L2 解決方案，有可能消除鏈上投機活動，進一步侵蝕礦工收入。

The Ethereum Merge: A Cautionary Tale

以太坊合併：一個警世故事

Ethereum's Merge in 2022 demonstrated the potential for emissions reductions to fail in stimulating price appreciation. A similar outcome for Bitcoin could have devastating consequences for its economic security, potentially forcing changes to the BTC issuance curve and challenging its status as the leading blockchain.

以太坊 2022 年的合併證明了減排可能無法刺激價格升值。比特幣的類似結果可能對其經濟安全產生毀滅性後果，可能迫使比特幣發行曲線發生變化，並挑戰其作為領先區塊鏈的地位。

Conclusion: A Test of Bitcoin's Resilience

結論：比特幣彈性的測試

Bitcoin's long-term viability depends on its ability to adapt to changing market conditions and technological advancements. The upcoming Halving will be a crucial test of Bitcoin's resilience as it faces new economic challenges and threats to its security.

比特幣的長期生存能力取決於其適應不斷變化的市場條件和技術進步的能力。即將到來的減半將是對比特幣彈性的重大考驗，因為它面臨新的經濟挑戰和安全威脅。

Development efforts may have come too late to prevent near-term instability, but the future of Bitcoin remains uncertain. It is possible that the 21m BTC cap will be removed or that Bitcoin will transition to a Proof-of-Stake consensus mechanism. Alternatively, the Bitcoin chain could sunset, with BTC surviving as an ERC-20 token on Ethereum. Only time will tell which path Bitcoin will ultimately take.

開發工作可能來得太晚，無法防止近期的不穩定，但比特幣的未來仍然不確定。 2,100 萬比特幣的上限可能會被取消，或者比特幣將過渡到權益證明共識機制。或者，比特幣鏈可能會日落，而 BTC 作為以太坊上的 ERC-20 代幣繼續存在。只有時間才能告訴我們比特幣最終會走哪條路。