US Copyright Office
The US Copyright Office is a government agency responsible for administering and enforcing copyright laws in the United States. The office is responsible for registering and documenting copyright claims, maintaining the public catalog of copyright records, providing bulk data downloads of registration records, and administering licensing programs. The Copyright Office provides open bulk datasets of approximately 22 million registration records and is modernizing its systems through the Enterprise Copyright System (ECS) program.
APIs
Copyright Public Records System
The Copyright Public Records System (CPRS) provides access to U.S. copyright registration and recordation data with advanced search capabilities and improved interfaces. Replace...
Copyright Bulk Datasets
Bulk download of approximately 22 million U.S. copyright registration records from January 1, 1978 to June 27, 2025. Available in raw unparsed MARC, parsed CSV, and tabular CSV ...
Licensing Documents Search
Searchable directory of licensing documents including compulsory license statements of account, royalty payments, and statutory license records maintained by the Copyright Office.
DMCA Designated Agent Directory
Searchable directory of Online Service Providers (OSPs) that have registered DMCA designated agents with the U.S. Copyright Office per Section 512 of the Digital Millennium Copy...
Features
Approximately 22 million copyright registration records from 1978 to present available for bulk download in MARC, parsed CSV, and tabular CSV formats across all copyright work categories.
Advanced search system for copyright registration and recordation data, replacing the Online Public Catalog in June 2025.
Electronic Copyright Office registration system for submitting new copyright registration applications online.
Searchable database of compulsory license statements of account and royalty payments filed with the Copyright Office.
Directory of online service providers that have registered DMCA designated agents per Section 512 of the DMCA.
Ongoing modernization of all Copyright Office IT systems into a unified, interconnected digital infrastructure.
Use Cases
Searching copyright records to determine ownership, registration status, and rights information for works before licensing or use.
Downloading bulk copyright registration datasets for academic research, legal analysis, or statistical studies of copyright registration trends.
Looking up DMCA designated agents for online service providers to send takedown notices per Section 512 requirements.
Searching licensing documents to verify statutory license compliance and royalty payment records.
Using copyright records to research ownership of works when rights holders cannot be identified or located.
Integrations
Copyright Office is a department of the Library of Congress; data integrates with LC catalog systems and MARC format records.
Collaborates with USPTO on intellectual property policy, including joint AI and copyright/patent studies.