Bitcoin mining went from laptops to industrial scale. Here's how the mining world is organized today.
Solo mining: Your machine competes alone. If you find a block — huge reward! But with one small machine, you might wait years (or never).
Pool mining: Thousands of miners combine computing power. When the pool finds a block, rewards are split proportionally. Steady small payouts instead of lottery odds.
Popular pools: Foundry, Antpool, F2Pool, Slush Pool (names change — research current options).
| Era | Hardware | Status today |
|---|---|---|
| 2009–2013 | CPU (laptop) | Obsolete |
| 2013–2016 | GPU (graphics card) | Obsolete for Bitcoin |
| 2016–now | ASIC (specialized chips) | Required |
ASIC = Application-Specific Integrated Circuit — chips built only for Bitcoin mining. A modern ASIC is millions of times faster than a laptop.
Every ~4 years, the block subsidy halves:
This continues until ~2140 when all 21 million bitcoin exist. Mining rewards shift toward transaction fees over time.
Small miners join pools for steady payouts. ASIC hardware dominates. The halving reduces new supply every four years — a key part of Bitcoin's scarcity.
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