Crypto mining is the process of validating transactions and adding them to the blockchain by solving complex mathematical puzzles using specialized hardware — and earning cryptocurrency rewards in return.
Crypto mining is the engine behind proof-of-work blockchains like Bitcoin. Miners compete to solve a cryptographic puzzle — a hash function that requires massive computational effort to crack but takes milliseconds to verify. The first miner to find the correct solution broadcasts the new block to the network, earns a block reward (currently 3.125 BTC after the 2024 halving), and the process restarts for the next block.
Every 10 minutes on average, a new Bitcoin block is added this way. The difficulty of the puzzle automatically adjusts every 2,016 blocks to ensure this timing stays consistent regardless of how much mining power is active globally.
In 2009, Bitcoin could be mined on a regular laptop CPU. By 2013, GPUs (graphics cards) became necessary. Today, competitive Bitcoin mining requires ASICs — Application-Specific Integrated Circuits — chips designed exclusively for mining that are thousands of times more efficient than general-purpose hardware.
GPU mining remains viable for some altcoins like Ethereum Classic, Ravencoin, and Ergo, where ASIC resistance is built into the algorithm.
Solo mining Bitcoin today is statistically equivalent to buying one lottery ticket against millions. Most miners join a Mining Pool — a collective that combines hash power, finds blocks more frequently, and distributes rewards proportionally. The largest pools (Foundry USA, AntPool, F2Pool) control significant portions of Bitcoin's total hash rate.
Mining profitability depends on three variables: hardware efficiency (hash rate per watt), electricity cost (the single largest operating expense), and coin price. At $0.05/kWh electricity, modern ASICs are profitable. At $0.15/kWh in most European countries, margins become razor-thin or negative.
Proof of Work mining is increasingly contrasted with Staking — the Proof of Stake alternative used by Ethereum since 2022. Staking requires no hardware, consumes 99% less energy, and can be done directly on exchanges. For most retail participants, staking is more accessible than mining.
You don't need hardware to profit from mining economics. On Eidex, you can buy Bitcoin, Litecoin, and other proof-of-work coins directly — or trade them as their price reacts to mining difficulty adjustments and halving events. Start trading on Eidex without any setup.