From Satoshi's CPU to industrial-scale ASIC farms — the complete guide to Bitcoin mining
How Satoshi Nakamoto and a handful of enthusiasts mined Bitcoin on ordinary desktop CPUs in the network's earliest days.
How graphics cards transformed Bitcoin mining from a hobby into a competitive industry, and why GPU parallel processing dominated from 2010 to 2013.
Purpose-built mining chips made GPUs obsolete overnight and transformed Bitcoin mining into a capital-intensive industrial operation.
How pooled mining solved the variance problem, from Slush Pool's invention in 2010 to the major pools that dominate Bitcoin mining today.
The elegant algorithm that keeps Bitcoin blocks arriving every 10 minutes, regardless of how much mining power joins or leaves the network.
The story of Bitcoin's hash rate growth from a single CPU doing kilohashes to a global network producing hundreds of exahashes per second.
The facts behind Bitcoin's energy consumption debate — from Cambridge energy estimates to renewable adoption, stranded energy, and methane flaring.
How Bitcoin mining shifted from Chinese dominance to a globally distributed industry after the 2021 ban, reshaping mining's geopolitical landscape.
Bitcoin mining is the process of using specialized computers to solve cryptographic puzzles that validate transactions and add new blocks to the blockchain. Miners compete to find a hash below a target difficulty, and the winner receives the block reward (currently 3.125 BTC) plus transaction fees. Mining secures the network through proof of work.
Bitcoin mining has evolved through four eras: CPU mining (2009—2010) when anyone could mine on a laptop, GPU mining (2010—2013) using graphics cards for parallel processing, FPGA mining (2011—2013) as a brief intermediate step, and ASIC mining (2013—present) using purpose-built chips. Each transition increased efficiency by orders of magnitude.
Bitcoin mining profitability depends on electricity costs, hardware efficiency, and Bitcoin's price. After the April 2024 halving reduced rewards to 3.125 BTC, only miners with access to cheap electricity (under $0.05/kWh) and latest-generation ASICs remain profitable. Industrial operations in regions with abundant renewable energy have the strongest margins.
See where Bitcoin stands today using the Power Law model with historical support and resistance bands.
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