Policy
A book published openly should still be there in fifty years.
A printed book survives on library shelves. A digital edition survives where it has been deposited elsewhere as well. The arrangements below place every title with independent archives and repositories.
What We Do
- CLOCKSS and Portico. Every title is deposited in these independent, community-governed dark archives.
- DOAB and OAPEN. Full text and metadata are deposited with the Directory of Open Access Books and the OAPEN Library, which host and serve the books independently of our own platform.
- Legal deposit. Titles are lodged with Library and Archives Canada under Canadian legal deposit.
- Funder repositories. Where a funder requires it, for example Europe PMC and PubMed Central Bookshelf for Wellcome-funded work, we make that deposit as well.
- Institutional repositories. The licence permits deposit anywhere; we supply files to authors and their institutions on request.
- Persistent identifiers. DOIs are registered with Crossref and maintained. If a book moves, the DOI still resolves.
Formats and Integrity
We archive in open, non-proprietary formats (tagged PDF/A, EPUB 3, and structured XML source) so that files remain readable as software changes. Fixity is checked on deposit. Metadata is archived alongside the content, because a file without its metadata is much harder to find and to trust.