In the decentralized world of Bitcoin, a unique and often misunderstood role exists — that of the "miner." These individuals are the backbone of the network, using powerful computers to validate transactions and secure the blockchain. One such miner, Sun Xiaoxiao (a pseudonym), once managed Haobtc’s in-house mining operation. Before entering the crypto space, he worked as a project manager at a tech firm. But after Bitcoin surged in popularity across China in 2013, Sun dove headfirst into the ecosystem — developing Bitcoin-related products, selling mining hardware, and launching navigation websites.
Over the years, Sun claims he avoided many pitfalls — only to fall into one of the most notorious traps in early crypto history: investing everything he owned into a high-flying mining stock that eventually collapsed to zero. In his own words, he lost all his savings and nearly ended up destitute.
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The Mechanics of Bitcoin Mining
To understand Sun’s journey, it's essential to grasp how Bitcoin mining works.
Bitcoin was introduced in 2009 by an anonymous figure known as Satoshi Nakamoto. It operates on a decentralized ledger called the blockchain, which records every transaction ever made. Every ten minutes, a new block is added to this chain — containing a batch of recent transactions.
Miners compete to solve a complex mathematical puzzle based on hash functions. Solving it grants them the right to add the next block and earn newly minted Bitcoin as a reward. This process is known as proof-of-work.
"Think of it like rolling dice," Sun explains. "Imagine you're trying to roll three dice and get a sum under five. It's hard to guess the right combination, but once someone does, it's easy for others to verify." In reality, the difficulty is astronomically higher — equivalent to rolling over 100 million virtual dice and getting an extremely low result.
The speed at which miners attempt these solutions is measured in hash rate — or how many guesses per second they can make. Today, the global Bitcoin network performs over 236 exahashes per second (236 quintillion), a number so vast it surpasses the total number of water droplets in more than 200,000 Olympic-sized swimming pools.
Despite this immense computational power, finding a valid solution still takes about ten minutes on average.
The Four Roles of Mining
According to Sun, mining serves four critical purposes:
- Issuing new Bitcoin into circulation.
- Confirming and validating transactions.
- Creating new blocks (the “mined” data units).
- Securing the network through proof-of-work, making tampering nearly impossible.
The first miner in history was Satoshi Nakamoto himself, who mined the genesis block on January 3, 2009. Embedded in that block was a message referencing a financial crisis headline — a symbolic protest against traditional banking systems.
Hal Finney, a renowned cryptographer, became the second miner and received the first Bitcoin transaction ever sent.
From CPUs to ASICs: The Evolution of Mining Hardware
In Bitcoin’s early days, anyone could mine profitably with a regular computer. A standard CPU was enough to solve blocks and earn rewards. At that time, miners were essentially running digital printing presses.
But as Bitcoin’s value rose, competition intensified. The network automatically adjusts difficulty every 2,016 blocks (roughly two weeks) to maintain a steady 10-minute block interval.
By mid-2010, miners began using graphics cards (GPUs) for greater efficiency. Some even built large GPU farms — though poor maintenance often led to failures before profits materialized.
As GPUs became obsolete, specialized hardware called ASICs (Application-Specific Integrated Circuits) emerged. One pioneer was Zhang "Pumpkin" from Beihang University, who developed the Avalon miner — hundreds of times more efficient than consumer PCs.
His machines sold out rapidly during the 2013 Cyprus financial crisis, when Bitcoin briefly hit $266. Buyers who got early units saw massive returns — some claiming their rigs paid for themselves within weeks.
However, a dangerous trend arose: pre-sale or "futures" mining machines. Companies took deposits for hardware months in advance, but delays in chip delivery meant many buyers never recouped their investments due to rising network difficulty.
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The Rise and Fall of “Kao Cat” Mining Stock
While Sun avoided losing money on delayed ASIC deliveries, he made a far costlier mistake — investing everything in Kao Cat (Fried Cat) Mining Company stock.
In 2012, an anonymous developer known only as “Kao Cat” launched an IPO on GLBSE, a Bitcoin-based stock exchange. He issued 400,000 shares at 0.1 BTC each (about $10 at the time), raising funds to produce mining hardware.
Unlike many scams, Kao Cat delivered real products. His miners were profitable, generated consistent returns, and paid generous dividends. The stock soared — reaching 5 BTC per share, a 50x return.
Sun invested heavily at 2 BTC per share, believing the dividends alone could sustain his lifestyle regardless of price swings.
"I thought I had cracked the code," he recalls. "Even if prices dropped, I’d still earn passive income from mining."
But after Bitcoin’s explosive rally in late 2013, both BTC and Kao Cat shares crashed. Sun held on, hoping for a comeback — especially with rumors of next-gen hardware.
He even traveled to Shenzhen in 2014 to help sell Kao Cat miners before Bitmain launched its dominant Antminer series.
Sales were sluggish. Friends urged him to sell his shares. He refused.
Then in 2015 — Kao Cat vanished. No announcements. No updates. His online presence disappeared overnight.
Sun’s entire portfolio — every Bitcoin he owned — was tied up in now-worthless shares.
"I lost everything," he admits. "I was close to begging on the streets."
His lesson?
“Know when to get off. Getting off saves lives.”
The Modern Mining Landscape
Today, Sun runs a large-scale mining operation with over 100 petahashes (PH/s) of computing power — accounting for roughly 6% of global Bitcoin hash rate.
That means his team mines about 100 BTC per day, worth around $6 million annually at current prices. However, operational costs are steep: his facility consumes **40,000 kWh per hour**, with electricity priced at $0.05/kWh.
Using efficient Antminer S7 units, his break-even cost sits around $3,000 per BTC — still profitable at today’s valuations.
Energy Use and Environmental Impact
Critics argue Bitcoin mining wastes energy. But Sun counters that it repurposes otherwise wasted electricity — particularly hydroelectric power in Sichuan and Tibet during rainy seasons.
China wasted over 50 billion kWh of renewable energy in 2015 due to grid limitations. Large mining farms absorb this excess power locally — turning stranded energy into global digital value.
"It’s like solving two problems with one solution," Sun says. "We’re moving value across borders without building new infrastructure."
The Race Against Time
Mining isn’t just about hardware and electricity — it’s also about speed.
Sun relocates his equipment seasonally: moving from Inner Mongolia in winter to Sichuan during the summer flood season when hydropower is cheapest.
Each move is a logistical battle — requiring air freight and full deployment within 48 hours to stay competitive.
"One delay and you lose weeks of profits," Sun warns. "It’s like beekeepers migrating with flowers — we follow cheap power."
During one transfer, his team narrowly avoided death when rocks tumbled down a mountain just minutes after they passed.
The Future of Mining
Sun believes the golden eras of mining are behind us:
- 2009–2012: Mined 50% of all BTC
- 2012–2016: Mined 25%
- 2016–2020: Mined 12.5%
Now, with longer payback periods and rising centralization, individual miners face steep odds.
The future lies in industrial-scale operations, specialized roles (hardware manufacturing vs operation), and financial instruments like hashrate tokens and standardized compute exchanges — allowing everyday users to invest without owning physical gear.
As for trading?
Sun stays neutral: “If people want to speculate, let them — as long as they accept the risk.”
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Frequently Asked Questions
Q: What is Bitcoin mining?
A: It's the process of validating transactions and securing the blockchain by solving complex math problems. Miners are rewarded with new Bitcoin for their work.
Q: Can you still profit from mining today?
A: Yes, but profitability depends on electricity costs, hardware efficiency, and Bitcoin’s price. Most successful operations are large-scale and professionally managed.
Q: Why did Kao Cat stock fail?
A: While initially legitimate and profitable, poor timing, competition from Bitmain’s superior Antminers, and the mysterious disappearance of its founder led to its collapse.
Q: Is Bitcoin mining bad for the environment?
A: It consumes significant electricity, but increasingly uses renewable or stranded energy sources — helping reduce waste from unused hydropower and other green sources.
Q: How do miners reduce costs?
A: By locating near cheap energy sources (like hydro dams), optimizing cooling systems, and upgrading to efficient ASIC models regularly.
Q: Can ordinary people still participate in mining?
A: Direct hardware mining is tough for individuals now. However, cloud mining services and hashrate trading platforms offer alternative ways to earn rewards without managing physical machines.