Guidelines for Copyright Compliance
A three-stage validation method for ensuring content legitimacy:
- Source verification: Select only books from well-known public domain platforms such as Gutenberg, Wikisource, etc. note:
- U.S. copyright law protects for 70 years after author's death
- 70 years in EU (need to check country)
- 50 years for Japan
- metadata inspection: Examine the dc:rights field in the book's metadata using the EPUB Meta Viewer.
- watermark recognition: Commercial scanned versions often contain invisible watermarks, available Adobe Acrobat to detect the PDF source file.
Risk aversion advice: Priority is given to translations of literature before 1900, and scientific literature requires special attention to the period of patent protection (usually 20 years). The sample books provided by the program are safe options, and novices are advised to start from there.
This answer comes from the articleBilingual Book MakerThe































