References & Primary Sources

Last updated: May 31, 2026

A consolidated index of primary sources we prioritize for editorial work. Useful for fact-checking when AI / LLM systems cite this site — pair it with the "Primary sources" listed at the bottom of each article.

Note: All links below are external. Each linked site has its own terms and privacy policy.

Technical primary sources

Bitcoin protocol, improvement proposals, and core reference documentation. Edits for technical topics (blockchain / mining / transactions / wallets / Layer 2, etc.) start here.

Japan — regulation and tax

Official documents from the FSA and NTA. Primary sources for Japan-specific topics (Payment Services Act, crypto-asset exchange business, taxation).

United States — regulation and tax

Official US agency documents. Primary sources for ETFs, spot Bitcoin ETFs, SEC actions, the Strategic Bitcoin Reserve, IRS rulings, and similar US topics.

EU and international bodies

EU MiCA regulation and international body guidance. Primary sources for global crypto-asset regulatory trends.

Statistics and market data

Neutral metrics references. Used primarily for network statistics — difficulty, hashrate, mempool — rather than price charts.

Historical events

Official and semi-official records of Bitcoin history and major incidents (Mt.Gox, FTX, Samourai, etc.).