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About Bitcoin Library

Last updated: June 11, 2026

Bitcoin Library (bitcoin.ne.jp) is a free educational library for learning Bitcoin from zero. It covers 31 topics — history, blockchain, mining, halving, wallets, Lightning Network, ETFs, regulation, and more — bilingually in Japanese and English, with a strictly neutral perspective.

Purpose

This site exists to provide an accurate and neutral educational resource about Bitcoin, freely accessible to anyone. It runs with no advertising and no user registration; analytics are limited to consent-based Google Analytics 4 (controlled by the cookie banner and disabled by default), and no advertising tracking is used. See the Privacy Policy for details.

What This Site Does NOT Provide

  • -Trading, exchange, brokerage, or intermediation of crypto-assets
  • -Investment advice, buy/sell recommendations, or price predictions
  • -Legal, tax, or financial advice
  • -Exchange referrals, affiliate links, or advertising
  • -Collection of personal information such as names or contact details

Target Audience

This site is primarily aimed at beginners and intermediate learners who want a systematic understanding of how Bitcoin works, its history, economics, and regulation. It is not for readers who want price predictions or to make money quickly — it is for readers who want to understand what Bitcoin is and why it works.

Content Scope (31 Topics)

  • -Foundations: Bitcoin history / Blockchain / Satoshi Nakamoto / The Whitepaper, Annotated
  • -Mechanics: Mining / Halving / Transactions / Supply schedule / Running a Node
  • -Safety: Wallets / Privacy / Irreversibility / Scams & Self-Defense / Inheritance
  • -Economics: Bitcoin economics / ETFs / Incidents and turning points / Comparisons
  • -Scaling: Lightning Network / Layer 2 / Ordinals / Fork history
  • -Context: Regulation / Glossary / Common myths / Bitcoin Taxes (Japan) / Acquiring & Disposing / Payments
  • -Critical Perspectives & Risks: Vulnerabilities, Criticisms, Paradoxes

Operator

This site is operated by KK siiiiiixth as one of its proprietary educational products. For enquiries about this site, please use the "Contact" link at the bottom of the page (the operator's contact form).

Editorial Policy

Detailed editorial principles (primary-source-first, neutrality, fact-checking, no price predictions, no advertising, update cadence) are published on the editorial policy page. Each article lists its primary sources at the end, and a consolidated index lives on the references page.

Update Policy

Topics containing time-sensitive content (regulation, tax, ETFs, economic data) display an explicit last-updated date and primary source links. Historically and technically stable topics are only updated when factual corrections are required.

Disclaimer

Content on this site is for educational and informational purposes only — it does not constitute investment advice, recommendations to buy or sell, legal advice, or tax advice. Regulation, tax rules, prices, and market data are subject to change. For the latest information, always consult primary sources (official publications from the FSA, NTA, SEC, etc.).