What Is Bitcoin Mining? A Beginner's Complete Guide 2026
Bitcoin mining is the process by which new blocks of transactions are validated and added to the Bitcoin blockchain, while new Bitcoins are created and distributed to participants. Miners use specialized computer hardware called ASIC miners to solve complex mathematical puzzles on the SHA-256 algorithm, earning block rewards and transaction fees in return.
Last verified: Jul 23, 2026 22:52 UTC - Bitcoin price: $65,141 | Network difficulty: 127.17T | Network hashrate: 856 EH/s | Block height: 959317
Direct Answer: What Is Bitcoin Mining?
Bitcoin mining is how the Bitcoin network operates. It serves two purposes at once: validating transactions so they can't be double-spent, and creating new bitcoins through a process called the block reward. Miners compete to solve a cryptographic puzzle, and the first one to find the solution gets to add the next block of transactions to the blockchain and receives 3.125 newly minted bitcoins plus any transaction fees. The mining difficulty adjusts every 2,016 blocks (roughly every two weeks) to keep block production at one every ten minutes.
How Bitcoin Mining Works: The Step-by-Step Process
Step 1: Transactions Wait in the Mempool
Every time someone sends bitcoin, the transaction is broadcast to the network. These unconfirmed transactions sit in a waiting area called the mempool.
Step 2: Miners Bundle Transactions into a Block
A miner collects up to 1,000-2,000 transactions and bundles them into a candidate block with a reference to the previous block and a puzzle solution.
Step 3: Miners Compete to Solve the Puzzle
Every miner runs ASIC hardware to compute SHA-256 hashes billions of times per second. The miner who finds a valid hash broadcasts it first.
Step 4: The Block Is Added and the Miner Is Rewarded
Once the network accepts the new block, the miner receives the block reward, currently 3.125 bitcoins, plus all the transaction fees. The block is now permanently recorded on the blockchain.
What Mining Hardware Do You Need?
ASIC Miners: The Only Viable Option
Bitcoin mining requires Application-Specific Integrated Circuit (ASIC) hardware - machines designed exclusively for SHA-256 hashing.
Types of Bitcoin ASIC Miners
| Voltage Class | Typical Use Case | Example Miners |
|---|---|---|
| 110-120V AC | Residential | Bitaxe Gamma 601, Jingle Miner Hashcard |
| 200-240V AC | Commercial | Antminer Z15, Whatsminer M60S |
| 380-415V AC | Industrial data center | Antminer S23 Hyd, Antminer S21 XP+ Hyd |
| 480V | Utility-scale fleet | Antminer U3S23H 1160TH/s |
CoinWarz tracks 95 Bitcoin ASIC miners. What matters most is Profit per Watt - not raw hashrate.
The Most Important Metric: Profit per Watt
Two miners can produce the same daily revenue but one may use twice as much electricity. Profit per Watt = (Revenue - Power Cost) / Watts
The most profitable Bitcoin miner by Profit per Watt is the Antminer U3S23H 1160TH/s at $0.000940/W, netting $10.35/day. The accessible Antminer S23 Hyd 580TH/s delivers the same efficiency at $5.18/day net.
View all 95 miners at coinwarz.com/bitcoin-miners.
What Is Network Difficulty and Why Does It Matter?
Bitcoin's network difficulty is 127.17T. Difficulty adjusts every 2,016 blocks (~2 weeks). The next adjustment is estimated for Jul 26, 2026 9:59 AM UTC - 299 blocks away.
Track the chart at coinwarz.com/bitcoin-difficulty.
What Is Network Hashrate?
Bitcoin's network hashrate is 856 EH/s. A higher hashrate means more security but more competition. View the chart at coinwarz.com/bitcoin-hashrate.
When Is the Next Bitcoin Halving?
Bitcoin rewards halve every ~4 years. The current 3.125 BTC reward (Halving 4, April 2024) drops to 1.5625 BTC at Halving 5, projected May 7, 2028 at block 1,050,000.
| Halving | Block Height | Reward | Date |
|---|---|---|---|
| 1 | 210,000 | 25 BTC | Nov 28, 2012 |
| 2 | 420,000 | 12.5 BTC | Jul 9, 2016 |
| 3 | 630,000 | 6.25 BTC | May 11, 2020 |
| 4 | 840,000 | 3.125 BTC | Apr 20, 2024 |
| 5 | 1,050,000 | 1.5625 BTC | May 7, 2028 (projected) |
Read the full countdown at coinwarz.com/bitcoin-halving.
Frequently Asked Questions
What exactly is a Bitcoin block?
A bundle of ~1,000-2,000 confirmed transactions, created every 10 minutes.
Do I need special software?
Yes, connect your ASIC to a pool like Foundry, Antpool, or F2Pool.
Is Bitcoin mining legal?
Legal in most countries, but check local regulations.
Can I mine Bitcoin with a GPU?
No. GPU mining has been unprofitable since 2013.
What happens after the 2028 halving?
Block reward drops 50%. Inefficient miners exit; difficulty adjusts down.