Learn how Bitcoin mining works, including how transactions are validated, block rewards, energy use, and why miners play a key role in securing the network.

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Betsy began her career in international ...

Key takeawaysBitcoin mining began in 2009 as a hobby-friendly activity where users could earn BTC using CPUs and later GPUs. By 2026, the landscape has shifted entirely to industrial-scale operations ...

Discover the 10 best free and paid platforms in 2026 for cloud mining, hash markets, and simulated rewards today!