Fatcat!

(Papers total as of: 2023-01-21)

Fatcat is a versioned, publicly-editable catalog of  s:  articles,  proceedings, pre-prints,  posts, and so forth. The goal is to improve the state of and access to these works by providing a manifest of full-text content versions and locations.

This service does not directly contain full-text content itself, but provides basic access for human and machine readers through links to copies in web ,, and the public .

Significantly more context and background information can be found in The Guide.

Feedback and queries can be directed to webservices@archive.org.

A few things set Fatcat apart from similar indexing and discovery services: This service aspires to be a piece of sustainable, long-term,, , , digital infrastructure. It is primarily designed to support the archival and dissemination roles of communication. It may also support the registration role (establishing precedence and authorship), but explicitly does not aid with certification of content, and is not intended to be used for evaluation of individuals, institutions, or venues. This service is 'universal', not curated. This means that it includes retracted works (annotated and disclaimed as such) and content some may consider 'predatory publishing'.
 * ''Goals and Features
 * inclusion of archival, file-level metadata (hashes) in addition to URLs, which allows automated verification ('do I have the right copy'), reveals content-drift over time, and enables efficient distribution of content through the ecosystem
 * native support for 'post-PDF' <digital media ></digital media>, including archival web captures and datasets, as well as content stored on the distributed web
 * data model that captures the work/edition distinction, grouping pre-print, post-review, published, re-published, and updated versions of a work together
 * public editing interface, allowing metadata corrections and improvements from individuals and bots in addition to automated imports from authoritative sources
 * focus on providing a stable API and corpus (making integration with diverse user-facing applications simple), while enabling full replication and mirroring of the corpus to reduce the risks of centralized control

The source of all bibliographic information is recorded in edit history metadata, which allows the provenance of all records to be reconstructed. A few major sources are worth highlighting here: Many thanks for the hard work of all these projects, institutions, and individuals!
 * ''Sources of Metadata
 * Release metadata from Crossref, via their public REST API
 * Release metadata and linked full-text content from NIH Pubmed and arXiv.org
 * Release metadata and linked public domain full-text content the JSTOR Early Journal Content collection
 * Creator names and de-duplication from ORCID, via their annual public data releases
 * Journal title metadata from DOAJ, ISSN ROAD, and SHERPA/RoMEO
 * Full-text URL lists from CORE, Unpaywall, Semantic Scholar, OA.mg, CiteseerX, and Microsoft Academic Graph.
 * The Guide lists more major sources

Fatcat is a project of the Internet Archive, a US-based non-profit digital library, well known for its Wayback Machine web archive, Open Library, and book digitization and lending services.
 * ''Support and Acknowledgments

Development of Fatcat and related web harvesting, indexing, and preservation efforts at the Archive have been partially funded by a generous grant from the Andrew W. Mellon Foundation (Long-tail Open Access Journal Preservation). Fatcat supports this work by both tracking which open access works are in known archives and providing minimum-viable indexing and access mechanisms for long-tail works which otherwise would lack them.

The service would not technically be possible without hundreds of Free Software components and the efforts of their individual and organizational maintainers, more than can be listed here (please see the source code for full lists). A few major components include the PostgreSQL database, Elasticsearch search engine, Flask python web framework, Rust programming language, Diesel database library, Swagger/OpenAPI code generators, Kafka distributed log, Ansible configuration management tool, and Ubuntu GNU / Linux operating system distribution.

The name 'Fatcat' can be interpreted as short for 'large catalog', as the service aspires to be a complete catalog of the digital scholarly record.

A list of technical contributors, including volunteers, is maintained in the source code repository (CONTRIBUTORS.md). Thanks everybody!