Geographic Mining Distribution

Geographic mining distribution is the breakdown of Bitcoin's hash rate across countries and regions. It matters for one reason: if too much hash concentrates in one jurisdiction, that jurisdiction effectively has veto power over Bitcoin via simple regulation.

The history is dramatic:

• 2017-2021: China dominant. Estimates put China at 50-75% of global hash rate, fueled by cheap hydro power in Sichuan/Yunnan during wet seasons and coal-power Mongolia/Xinjiang in dry seasons.
• May-September 2021: China's ban. In May the State Council ordered a crackdown on Bitcoin mining and trading; in June the main mining provinces ordered miners shut down; in September regulators declared crypto trading illegal and set out a plan to phase mining out nationwide. Hash rate dropped roughly 50% within weeks as miners packed shipping containers full of ASICs and exported.
• 2022-2026: post-ban dispersion. The hash rate moved to the United States (the leading host country, ~38% as of January 2022, the last month in Cambridge's country data), Russia, Kazakhstan, Canada, Malaysia, and a long tail of other countries.

What "distribution" actually depends on:

• Cheap power availability. Stranded hydro (Paraguay, Iceland, Norway, Pacific Northwest US), flared natural gas (Texas, North Dakota, Oman), nuclear baseload (Tennessee, parts of Europe), excess solar/wind.
• Regulatory tolerance. Some jurisdictions actively court miners (El Salvador, parts of Texas); others ban or heavily tax them.
• Climate. Cold climates reduce cooling cost; warm climates require immersion cooling or hydro-power-paired air-conditioning.
• Political stability. Mining operations require multi-year capital deployments; unstable regulation makes that infeasible.

Why this matters for Bitcoin security:

• A single country with 51%+ hash could censor transactions or attempt deeper reorgs. No single country currently has that.
• Concentration into 3-4 cooperating countries could still produce a censoring majority. The actual dispersion across many countries makes this politically difficult.
• The post-2021 dispersion is the structural reason "China shutting down mining" became a non-event for Bitcoin's security - the hash relocated rather than disappearing.

Monitoring sources: Cambridge Centre for Alternative Finance's Bitcoin Mining Map (the canonical academic source) plus on-chain heuristics from various analytics firms. All sources are estimates; mining operations don't publicize locations, and the picture changes monthly.