What is Bitcoin mining? A one-picture explanation of the core mechanism
When mentioning “mining,” many people think of actually digging underground. In reality, Bitcoin mining is a bookkeeping mechanism—miners use mining machines to verify data and keep records for the Bitcoin network, earning Bitcoin rewards as compensation.
This mechanism is based on a system called “Proof-of-Work” (PoW). Simply put: transactions on the Bitcoin network are bundled into “blocks,” and miners perform special calculations to find a hash value that meets certain criteria. The first miner to find such a hash broadcasts the block to the entire network. After other nodes verify it, the block is added to the blockchain, and the miner immediately receives a reward.
In one sentence: Mining is like solving an extremely complex math problem—whoever solves it first gets the Bitcoin reward.
The two main sources of mining income
Bitcoin miners’ income is not singular; it mainly comes from two parts:
1. Block Rewards
After successfully recording a block, the system automatically issues a certain amount of new BTC
Follows the “halving every 4 years” rule: 50 BTC → 25 BTC → 12.5 BTC → 6.25 BTC → 3.125 BTC (current level after the 4th halving in April 2024)
This reward continues until 21 million Bitcoins are mined in total
2. Transaction Fees (Gas fees)
Paid by all users conducting BTC transactions
The amount varies depending on network congestion and transaction priority
During the Ordinals inscription craze, transaction fees once accounted for over 50% of miners’ total income
Simply put, block rewards are “fixed salary,” and transaction fees are “variable bonuses.”
Evolution of mining equipment: from home computers to professional mining rigs
Bitcoin mining hardware has undergone dramatic evolution:
CPU Era (2009-2012)
Ordinary home computers’ processors could mine
Very low barrier, anyone could participate
GPU Era (Q1 2013)
Graphics cards became popular due to strong parallel computing ability
Mining difficulty started to rise
ASIC Era (Q2 2013 to present)
Application-Specific Integrated Circuits (ASIC) mining machines became mainstream
Common models: Antminer, Avalon, Shima, etc.
Costs rose from a few hundred dollars to 1000-2000 USD or more
The total network hashrate now exceeds 580 EH/s, making solo mining nearly impossible
From individual mining to the “mining pool” era
As total network hashrate surged, the form of mining changed fundamentally:
Early: Solo Mining
Individuals or small organizations mine alone
Main period: 2009-2013
Rewards all belong to the individual
Current mainstream: Collaborative mining and mining pools
To cope with competition, many miners concentrate their equipment into farms or join “Mining Pools”
Well-known pools: F2Pool, Poolin, BTC.com, AntPool, etc.
Rewards are distributed proportionally based on contributed hashrate
Joining a pool reduces individual payout per share but provides more stable income and lower risk
Emerging mode: Cloud mining
Users rent hashing power online without buying or maintaining hardware
Suitable for beginners or short-term testers
Can individuals still “mine for free” in 2025?
This is a common concern for newcomers. Honestly, the answer is no.
Why is personal mining no longer feasible?
High threshold for hashrate
Buying a professional mining machine costs over 1000-2000 USD
Hardware updates are very rapid; old models are hard to recoup costs even if cheap
Even with new machines, they are tiny compared to large pools’ total hashrate
Costs cannot be offset
Even in pools, individual BTC earnings per month are very limited
Often insufficient to cover electricity, maintenance, and operational costs
Equivalent to “losing money mining”
Industry centralization trend is obvious
Mining industry is gradually dominated by large capital and big farms
Small miners’ survival space continues to shrink
Why could early mining be “free”?
Between 2009-2013, the total network hashrate was far lower than today, and mining with ordinary CPUs could earn considerable BTC with very low difficulty. But that era is gone forever.
The real costs of Bitcoin mining
Want to know how much it costs to mine one BTC? You need to consider the following cost factors:
Cost Item
Description
Mining machine purchase
High-end models: 1000-2000 USD+
Electricity consumption
The largest expense, depends on machine power and regional electricity prices
Cooling systems
Fans, air conditioning, liquid cooling, etc.
Operations and management
Maintenance, network upkeep, technician costs
Pool fees
Usually 1-3% of mining revenue
Based on market data as of May 2025, the average total cost to mine one Bitcoin is approximately $108,256. This means miners only profit when BTC price exceeds this cost line.
Mining revenue: realistic expectations
The specific earnings of Bitcoin miners depend on:
Hashrate of the mining equipment used
Current network difficulty level
Real-time Bitcoin price
Regional electricity costs
Pool commission rate
These variables make precise calculations complex. Fortunately, many online calculators are available (such as MacroMicro), where you can input parameters to see expected returns.
How to respond after the 2024 halving?
What happened?
In April 2024, Bitcoin completed its fourth halving event, reducing the block reward from 6.25 BTC to 3.125 BTC—cut in half. This impacts the entire mining industry:
Income halved: The same mining work now yields 50% less reward
Mining “surrender wave”: Miners with high electricity costs or old equipment are forced to shut down; total network hashrate drops temporarily, but is later replaced by more efficient new miners
Transaction fee importance rises: With the rise of Ordinals inscriptions, transaction fee income increases, becoming a key supplement to miner revenue
How miners respond
Upgrade hardware
Replace old mining rigs with more energy-efficient models
Reduce electricity costs per unit of mining
Relocate to regions with cheap electricity
Find areas with low electricity prices and friendly policies
Increase use of renewable energy (wind, hydro, etc.)
Diversify mining strategies
Some pools support automatic algorithm switching (mining BTC and Dogecoin simultaneously)
Mine high-demand new coins flexibly
Use futures contracts for hedging, locking in BTC prices to avoid losses
Industry outlook after halving
Small miners find it hard to survive; hashrate further concentrates in large farms
May lead to innovative modes, such as “waste energy mining” (using wasted electricity) or hybrid farms combining AI computing power rental
How to officially start mining?
If you decide to enter the mining field, prepare as follows:
Step 1: Understand policy compliance
Mining is energy-intensive; some regions restrict or ban PoW mining. Confirm local regulations in advance.
Step 2: Choose mining method
Method
Suitable for
Pros & Cons
Self-purchase hardware and operate
Professional miners
Full control, but requires maintenance; noise, heat issues
Buy hardware and entrust third-party hosting
Funds but no technical skills
Worry-free but trust in hosting provider needed; extra costs
Rent hashing power (cloud mining)
Beginners
No equipment investment, low risk; lower returns
Common mining hardware examples
Antminer S19 Pro: Strong hashrate, high power consumption, needs cooling, suitable for high-efficiency professional miners
WhatsMiner M30S++: High hashrate, low power, larger size
AvalonMiner 1246: Cost-effective, suitable for mid-level miners
Bitmain Antminer S9: Cheapest, but outdated in performance; not recommended for newcomers
Hashrate rental platforms
NiceHash: Small amounts, flexible, $0.05-$1.5 per TH/s/day
Genesis Mining: Medium scale, mature experience
Bitdeer: Supports multiple coins
Step 3: Officially start mining
Select hardware or rental platform, configure parameters, join a mining pool. Once mining begins, rewards are automatically distributed proportionally to your hashrate into your Bitcoin wallet, which you can sell or hold later.
Should you mine yourself? Or take another route
If the above seems complicated or costs are too high, there are simpler ways to participate in Bitcoin market:
Directly buy and sell or trade contracts on exchanges
Advantages:
No hardware investment, no maintenance
Flexible trading, supports spot and futures
Opportunities for market up and down
Fully anonymous and private, no third-party trust needed
24/7 trading, can enter and exit anytime
Comparison table
Method
Initial Investment
Technical Skill
Risk
Return Stability
Self-built mining
Very high (1000+ USD + electricity)
Medium to high
Medium
Long-term stable but diminishing returns
Join mining pool
Moderate (100-500 USD)
Low
Low
Stable but low returns
Contract trading
Very low (small initial)
Medium
Medium to high
Volatile in short term
Summary: The true face of Bitcoin mining in 2025
In one sentence: Bitcoin mining has evolved from a hobby for individuals into an industrial operation; the era of “free” mining with CPUs/GPUs is gone forever.
Current situation:
High entry barriers (hardware investment of 1000-2000 USD+)
Industry centralization is obvious, dominated by large capital and farms
Even joining pools, individual profits often cannot cover costs
The halving event further reduces profit margins
Future directions:
Small miners gradually exit; hashrate concentrates in large farms
Innovative modes emerge (waste energy mining, AI combined mining)
Transaction fee income may become more important
Advice for participants:
Before mining, conduct thorough cost-benefit analysis, ensure policy compliance, and beware of scam platforms. If costs outweigh profits, consider directly trading Bitcoin on exchanges—more flexible, lower threshold, and more controllable risks.
This page may contain third-party content, which is provided for information purposes only (not representations/warranties) and should not be considered as an endorsement of its views by Gate, nor as financial or professional advice. See Disclaimer for details.
The Truth About Bitcoin Mining in 2025: Do Individuals Still Have a Chance? A Detailed Explanation of Costs and Rewards in the Mining Machine Era
What is Bitcoin mining? A one-picture explanation of the core mechanism
When mentioning “mining,” many people think of actually digging underground. In reality, Bitcoin mining is a bookkeeping mechanism—miners use mining machines to verify data and keep records for the Bitcoin network, earning Bitcoin rewards as compensation.
This mechanism is based on a system called “Proof-of-Work” (PoW). Simply put: transactions on the Bitcoin network are bundled into “blocks,” and miners perform special calculations to find a hash value that meets certain criteria. The first miner to find such a hash broadcasts the block to the entire network. After other nodes verify it, the block is added to the blockchain, and the miner immediately receives a reward.
In one sentence: Mining is like solving an extremely complex math problem—whoever solves it first gets the Bitcoin reward.
The two main sources of mining income
Bitcoin miners’ income is not singular; it mainly comes from two parts:
1. Block Rewards
2. Transaction Fees (Gas fees)
Simply put, block rewards are “fixed salary,” and transaction fees are “variable bonuses.”
Evolution of mining equipment: from home computers to professional mining rigs
Bitcoin mining hardware has undergone dramatic evolution:
CPU Era (2009-2012)
GPU Era (Q1 2013)
ASIC Era (Q2 2013 to present)
From individual mining to the “mining pool” era
As total network hashrate surged, the form of mining changed fundamentally:
Early: Solo Mining
Current mainstream: Collaborative mining and mining pools
Emerging mode: Cloud mining
Can individuals still “mine for free” in 2025?
This is a common concern for newcomers. Honestly, the answer is no.
Why is personal mining no longer feasible?
High threshold for hashrate
Costs cannot be offset
Industry centralization trend is obvious
Why could early mining be “free”?
Between 2009-2013, the total network hashrate was far lower than today, and mining with ordinary CPUs could earn considerable BTC with very low difficulty. But that era is gone forever.
The real costs of Bitcoin mining
Want to know how much it costs to mine one BTC? You need to consider the following cost factors:
Based on market data as of May 2025, the average total cost to mine one Bitcoin is approximately $108,256. This means miners only profit when BTC price exceeds this cost line.
Mining revenue: realistic expectations
The specific earnings of Bitcoin miners depend on:
These variables make precise calculations complex. Fortunately, many online calculators are available (such as MacroMicro), where you can input parameters to see expected returns.
How to respond after the 2024 halving?
What happened?
In April 2024, Bitcoin completed its fourth halving event, reducing the block reward from 6.25 BTC to 3.125 BTC—cut in half. This impacts the entire mining industry:
How miners respond
Upgrade hardware
Relocate to regions with cheap electricity
Diversify mining strategies
Industry outlook after halving
How to officially start mining?
If you decide to enter the mining field, prepare as follows:
Step 1: Understand policy compliance Mining is energy-intensive; some regions restrict or ban PoW mining. Confirm local regulations in advance.
Step 2: Choose mining method
Common mining hardware examples
Hashrate rental platforms
Step 3: Officially start mining Select hardware or rental platform, configure parameters, join a mining pool. Once mining begins, rewards are automatically distributed proportionally to your hashrate into your Bitcoin wallet, which you can sell or hold later.
Should you mine yourself? Or take another route
If the above seems complicated or costs are too high, there are simpler ways to participate in Bitcoin market:
Directly buy and sell or trade contracts on exchanges
Advantages:
Comparison table
Summary: The true face of Bitcoin mining in 2025
In one sentence: Bitcoin mining has evolved from a hobby for individuals into an industrial operation; the era of “free” mining with CPUs/GPUs is gone forever.
Current situation:
Future directions:
Advice for participants: Before mining, conduct thorough cost-benefit analysis, ensure policy compliance, and beware of scam platforms. If costs outweigh profits, consider directly trading Bitcoin on exchanges—more flexible, lower threshold, and more controllable risks.