How Bitcoin Mining Works: From Block Rewards to Mining Pools (2026 Beginner’s Guide)

🗂️ Table of Contents (Click to Jump)

1. What Is Bitcoin Mining?

Bitcoin mining is the process of adding new blocks to the Bitcoin blockchain and confirming transactions. It’s also how new BTC is created and distributed.

Every about 10 minutes, miners compete to solve a cryptographic puzzle. The winner creates a new block, includes recent transactions, and earns two kinds of rewards:

• Block reward — newly created BTC (post‑halving in 2024, currently 1.5625 BTC per block).
• Transaction fees — small fees paid by users for fast confirmation.

Bitcoin mining is permissionless: anyone can join with a compatible computer (ASIC) and stable internet, though ASIC miners dominate the network today.

Think of mining like this:

• Users send transactions to the Bitcoin network.
• Miners bundle these transactions into a block.
• Miners compete to solve a hard math problem.
• The winner adds the block, and everyone updates their copy of the blockchain.

2. Proof‑of‑Work & SHA‑256

Bitcoin uses a system called **proof‑of‑work (PoW)**. The idea is simple: miners must do a lot of computation to prove their work, which secures the network.

The algorithm behind Bitcoin mining is called **SHA‑256**. It takes some data and returns a fixed‑length hash (string of characters). Even a tiny change in input creates a very different output. Miners use this to create “proof” that they worked hard.

How it works (simplified):

1. The miner receives a block header (information about the block).
2. The miner tries different numbers (called nonces) with the block header.
3. For each number, the miner calculates a hash: SHA256(SHA256(block header + nonce)).
4. The miner keeps changing the nonce until the hash meets the current difficulty (starts with many zeros).
5. Once found, the miner sends the solution (proof) to the network; if accepted, the block is added.

This problem is easy to verify but hard to solve. That’s what makes Bitcoin secure: you must “burn” a lot of energy (electricity) to try trillions of hashes until you win.

Key terms connected to proof‑of‑work:

• Hashrate: How many hashes per second your hardware can compute (usually in TH/s).
• J/TH: How many joules of energy per terahash (measures efficiency).
• ASIC miner: Specialized hardware built only to do SHA‑256 hashing.
• PSU: Power Supply Unit that powers the ASIC.

3. Block Rewards in 2026

When Bitcoin was created in 2009, the first block reward was **50 BTC**. Every 210,000 blocks (about 4 years), Bitcoin “halves”: the reward is cut in half.

Recent halving years:

• 2012: 50 → 25 BTC
• 2016: 25 → 12.5 BTC
• 2020: 12.5 → 6.25 BTC
• 2024: 6.25 → 3.125 BTC (then 1.5625 BTC after further halving schedule)

As of 2026, the **current block reward is 1.5625 BTC** per block. Because blocks are found roughly every 10 minutes, there are about **144 blocks per day**.

So, in total:

• Daily new BTC supply: 1.5625 × 144 ≈ 225 BTC per day
• Per year: 225 × 365 ≈ 82,000–83,000 BTC per year

This keeps decreasing over time. The system is designed so that **no more than 21 million BTC will ever exist**. This scarcity is one reason Bitcoin has value.

Each block header includes:

• Version number of the software
• Hash of previous block (to connect chain)
• Merkle root (hash of all transactions in the block)
• Timestamp
• Nonces and difficulty target

After each block, miners start mining the next one, again using these ingredients and trying trillions of nonces until someone finds the right one.

4. Mining Pools: How They Work

Today the Bitcoin network hashrate is enormous — around **650 EH/s** (exahashes per second) in 2026. One single ASIC miner has a tiny chance to win a block alone. This is where **mining pools** come in.

A mining pool is a group of miners that combine their power and share block rewards. When any pool miner finds a valid block, the pool earns the block reward plus fees. Then these rewards are split among miners in the pool, usually based on how much work they have contributed.

Think of it like this:

• Instead of thousands of miners trying alone, they join one big team.
• Each miner submits partial work (“shares”).
• When someone wins, everyone in the pool gets paid regularly, even if they never win alone.

Why pools are useful for beginners:

• Smaller, more frequent payouts: Instead of waiting years for a lucky win, you get small rewards often.
• Lower risk: Profits are more predictable.
• Simpler setup: You just point your ASIC to the pool, and it handles the rest.

One downside of pools is that they **take a small fee**, usually 1–2% of the rewards. Different pools have different rules, fees, and payout methods.

Popular mining pools (2026) often used by beginners include:

• F2Pool — large global pool, supports many coins
• ViaBTC — good for beginners, many guides
• Luxor — popular in North America
• Antpool — Bitmain’s pool, widely used

How you join a pool:

1. Create an account or just register a miner at the pool.
2. Set a worker name and password.
3. Configure your ASIC miner with:
   • Pool URL (for example, stratum+tcp://btc.f2pool.com:3333)
   • Worker name
   • Password (often “x”)
4. Save and restart the miner — it will start submitting work to the pool.

Later you can check your daily or hourly hashrate, earnings, and payouts on the pool’s website or dashboard.

5. Difficulty and Hashrate Explained

Bitcoin has two important numbers that change all the time: **difficulty** and **hashrate**.

Difficulty is a number that controls how hard it is to find a valid block. The higher the difficulty, the more zeroes the winning hash must start with, and thus more hashes are needed on average to win.

Bitcoin difficulty **adjusts automatically** every 2016 blocks (about every 2 weeks) to keep block time close to 10 minutes. If hashrate increases (more miners join), difficulty rises. If hashrate falls, difficulty drops.

In 2026, Bitcoin difficulty is around **90–95 trillion** (often written as 90–95 T). This means miners must, on average, try about 45 quadrillion hashes per block to win — a huge amount of work.

Hashrate measures how fast miners can compute hashes. It’s usually measured in:

• TH/s (terahashes per second = 1 trillion hashes/sec)
• Eh/s (exahashes per second = 1 million TH/s)

The total Bitcoin network hashrate in 2026 is about **650 EH/s**. That means combined miners are doing 650,000,000,000,000,000 hashes per second.

For a single miner, your own hashrate is important for profitability:

• The higher your hashrate, the more “tickets” you have in the lottery each second.
• But your share of total network hashrate is tiny, so joining a pool is better.

Example calculation (simple):

• Your ASIC: 100 TH/s
• Network total: 650,000,000 TH/s
• Your share ≈ 100 / 650,000,000 = 0.0000154% of the hashrate

This shows why pools are so important: you earn rewards based on your share of work, not just on winning alone.

6. Transaction Fees & How Miners Earn Them

Bitcoin miners earn money not only from block rewards but also from **transaction fees**. When users send BTC, they pay a small fee to miners so their transaction is included in the next block.

Users can choose higher fees for faster confirmation or lower fees and wait longer. When the network is busy, fees go up because there’s more competition for block space. When it’s quiet, fees can be very low.

How fees are calculated:

• Miners prefer transactions with higher fees per byte of data.
• They usually fill each block with the highest‑fee transactions first.
• If the block is full, low‑fee transactions wait for later blocks.

Block size is limited, so there’s a “competition” for space. That’s why fees can spike around big events (halving, price changes, big exchanges sending lots of transactions).

Over time, block rewards will keep decreasing (halvings continue), but transaction fees will become more important for miners. Many experts think fees will be a larger share of miner income in the long term.

Here’s a simple example of how miners earn:

• Block reward: 1.5625 BTC
• Transaction fees in the block: 0.5 BTC (this varies)
• Total reward for the winning miner (or pool): 1.5625 + 0.5 = 2.0625 BTC

This 2.0625 BTC is then split among miners in the pool, according to their contributed work (shares) and the pool’s fee.

For beginners, the key points to remember are:

• Miners secure the network by validating transactions.
• They earn newly created BTC (block rewards) plus transaction fees.
• Block rewards will keep halving over time, making transaction fees more important.
• Miners group transactions, solve hard math problems, and add blocks to the blockchain.