Open Access Knowledge Portal

Blockchain Library

A curated gateway to the world's best free libraries and research archives. One search, millions of books and papers.

Check the box above to search all resources at once (may require allowing popups)

Explore Resources
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Books

Open Library

Borrow over 1.7 million digital books for free. A project of the Internet Archive with the goal of one web page for every book.
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Archive

Internet Archive

A digital library of millions of free books, movies, software, music, websites, and more. Preserving the world's knowledge.
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Classics

Project Gutenberg

Over 70,000 free eBooks. The oldest digital library, focusing on works where U.S. copyright has expired.
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Research

arXiv

Open-access archive for scholarly articles in physics, mathematics, computer science, and more. Over 2 million papers.
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Academic

Google Scholar

Search across scholarly literature. Find papers, theses, books, and court opinions from academic publishers and universities.
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AI-Powered

Semantic Scholar

AI-powered research tool for scientific literature. Discover connections between papers with advanced semantic analysis.
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Medical

PubMed Central

Free full-text archive of biomedical and life sciences journal literature at the NIH National Library of Medicine.
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Journals

DOAJ

Directory of Open Access Journals. Quality-controlled index of peer-reviewed, open access journals across all disciplines.
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Global

WorldCat

Search collections of libraries worldwide. Find books at your local library, discover rare items, and locate resources globally.
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Preservation

HathiTrust

Partnership of academic and research institutions preserving 17+ million digitized items from libraries around the world.
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Primary

Library of Congress

Digital collections from the world's largest library. Historic photographs, maps, manuscripts, and multimedia treasures.
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Culture

Europeana

Access millions of items from European museums, libraries, archives, and galleries. Art, books, music, and cultural heritage.

Why "Blockchain" Library?

The name is a metaphor. Just as blockchain technology creates decentralized, linked networks, this portal connects you to a distributed web of open knowledge across institutions worldwide.

Every resource here is free to access. These are libraries built on the belief that knowledge belongs to everyone, and we bring them together in one place so you can find what you need faster.

Think of this as a chain of open libraries, each link leading to millions of books, papers, and archives. One starting point, endless discovery.

Changelog
January 2026 Added "Search all resources at once" feature to open all 12 libraries in new tabs with one search.
January 2026 Launch with 12 open-access resources: Open Library, Internet Archive, Project Gutenberg, arXiv, Google Scholar, Semantic Scholar, PubMed Central, DOAJ, WorldCat, HathiTrust, Library of Congress, and Europeana.