The End of Ethereum Mining: Fatal Risk Signals 99% Missed

⚠️ Not financial advice. Crypto involves risk. Always do your own research before investing.

TL;DR

The 'Merge' upgrade in 2022 brought an absolute end to Ethereum mining, dealing a massive blow to countless miners. In the crypto market, overlooking technological shifts and focusing solely on short-term gains is a highly perilous investment strategy. We can glean crucial lessons from this. Moving forward, understanding a project's long-term vision, diversifying risks, and flexibly responding to market warning signs are paramount for crypto investing.

Did you know that in the crypto market, what once seemed like the most robust revenue model can turn into worthless ashes overnight? Countless operators who invested hundreds of millions of won in equipment and ran it day and night suffered immense losses because they failed to properly read this significant shift. The frustration they must have felt is beyond imagination.

The bottom line is:

However, this tragic failure holds crucial lessons that all of us must remember for future crypto investments. Let's uncover that wisdom together in this article.

In the early hours of September 15, 2022, Ethereum miner Kim Min-jun was, as usual, staring at his mining farm monitors. Before him were hundreds of graphics cards whirring non-stop, radiating heat. It was a golden goose, providing a stable income of tens of millions of won each month. But that morning, the Ethereum blockchain transitioned from PoW (Proof-of-Work) to PoS (Proof-of-Stake) under the name 'The Merge.' His mining equipment became obsolete in just one second. Kim Min-jun's multi-billion won setup could no longer mine ETH, and his dreams were shattered in an instant.

Ethereum Mining: Once a Golden Goose

The shocking truth is:

After 2017, as ETH prices surged, Ethereum mining was truly dubbed a 'golden goose.' From individual investors to corporate mining farms, everyone scrambled to buy high-performance graphics cards (GPUs). At the time, GPU manufacturers like NVIDIA and AMD struggled with supply shortages. High-end GPUs like the RTX 3080 sometimes traded at more than double their launch price. Many people made massive initial investments, expecting monthly returns ranging from tens to hundreds of millions of won. A CoinDesk article even shows that Ethereum mining revenue hit an all-time high in 2021. The crucial point here is that the overheated atmosphere at the time clouded rational judgment. Many mistakenly believed that 'this income would last forever.'

September 15, 2022: The Day Everything Stopped

The Ethereum 'Merge' finally took place on September 15, 2022, at 10:42:42 UTC (19:42:42 KST). The Ethereum blockchain transitioned from its existing PoW (Proof-of-Work) mechanism to PoS (Proof-of-Stake). This was a pivotal moment, marking the end of Ethereum mining history. The network's hashrate, which had been over 900 TH/s just before the Merge, shockingly converged to zero within minutes afterward. According to Ethereum.org, this transition was the culmination of years of effort to significantly improve Ethereum's scalability, security, and energy efficiency. However, the shocking truth is that this major change had been consistently foreshadowed by the Ethereum Foundation for years. Yet, many mining participants dismissed these warnings.

Fatal Signals Miners Overlooked

But that's not all:

The Ethereum Foundation had already included the PoS transition in its roadmap since 2016 and consistently shared development progress. In August 2021, EIP-1559 (fee burning) was introduced, a clear signal that mining income would partially decrease. At the time, some miners resisted and attempted a 'hard fork,' but it ultimately failed. You can find detailed information about these roadmap changes on Ethereum.org's Ethereum history page. Many in the mining community held vague hopes that 'The Merge' would be continuously postponed, or adopted a complacent attitude, thinking, 'Surely Ethereum wouldn't completely stop mining?' This is the crucial point: many miners focused only on short-term gains, overlooking the importance of long-term protocol changes. This 'surely not' complacency led to significant losses.

Massive Investment, Instant Futility

After the Merge, high-performance mining equipment, once valued at billions of won, instantly became 'scrap metal.' The used graphics card market completely collapsed, with prices plummeting by over 50% due to the flood of mining GPUs. There were attempts to repurpose mining equipment for other PoW coins (e.g., Ethereum Classic, Ravencoin). However, most of these efforts failed due to significantly lower profitability and higher difficulty compared to ETH. Consequently, countless mining farms shut down, and recovering investments became a distant dream. If you look at past mining revenue data on platforms like CoinGecko, you'll see a stark contrast before and after the Merge. Frankly, this situation was entirely predictable. The Ethereum Foundation did not encourage switching to other GPU-mineable coins after the PoS transition, which ultimately led to massive financial damage for mining participants.

A Repeated Tragedy in Other PoW Coins: Litecoin's ASIC Transition

The end of Ethereum mining wasn't the only tragedy. Similar cases can be found in other PoW coins in the past. A prime example is the 'ASIC transition' incident that occurred in the Litecoin mining market in 2014. At that time, Litecoin could be mined with GPUs, but with the emergence of ASIC miners specialized in the Scrypt algorithm (e.g., Antminer L3+), GPU-based miners quickly lost profitability. Those who had purchased expensive GPUs found their equipment rendered useless overnight. A CoinDesk article from that period details how the rise of ASICs impacted the GPU mining market. It's crucial to remember that technological changes can happen at any time. This isn't just an Ethereum-specific issue but a potential risk for all PoW-based cryptocurrencies.

The Price of Blind Trust in Technological Change: Bitcoin Cash Hard Fork Split

Another example is the confusion among miners that arose in November 2018 when Bitcoin Cash (Bitcoin Cash, BCH) hard-forked into Bitcoin SV (BSV). At that time, the BCH community split into two chains due to disagreements over scalability issues. Each faction engaged in a mining competition, dubbed 'Hash War,' to support their respective chains. This led to extreme instability in mining difficulty and profitability.

About the Author
Education Manager — Senior Crypto Analyst

Expertise: Cryptocurrency Trading, Risk Management, Bitcoin Technical Analysis
Last Reviewed: 2026-05-23

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