Latest blog posts
Martyn Rittman
2024 November 15

Research Integrity Roundtable 2024

For the third year in a row, Crossref hosted a roundtable on research integrity prior to the Frankfurt book fair. This year the event looked at Crossmark, our tool to display retractions and other post-publication updates to readers. Since the start of 2024, we have been carrying out a consultation on Crossmark, gathering feedback and input from a range of members. The roundtable discussion was a chance to check and refine some of the conclusions we’ve come to, and gather more suggestions on the way forward.

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Dominika Tkaczyk
2024 November 06

How good is your matching?

In our previous blog post in this series, we explained why no metadata matching strategy can return perfect results. Thankfully, however, this does not mean that it’s impossible to know anything about the quality of matching. Indeed, we can (and should!) measure how close (or far) we are from achieving perfection with our matching. Read on to learn how this can be done! How about we start with a quiz? Imagine a database of scholarly metadata that needs to be enriched with identifiers, such as ORCIDs or ROR IDs.

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Kornelia Korzec
2024 October 28

Update on the Resourcing Crossref for Future Sustainability research

We’re in year two of the Resourcing Crossref for Future Sustainability (RCFS) research. This report provides an update on progress to date, specifically on research we’ve conducted to better understand the impact of our fees and possible changes. Crossref is in a good financial position with our current fees, which haven’t increased in 20 years. This project is seeking to future-proof our fees by: Making fees more equitable Simplifying our complex fee schedule Rebalancing revenue sources In order to review all aspects of our fees, we’ve planned five projects to look into specific aspects of our current fees that may need to change to achieve the goals above.

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Lucy Ofiesh
2024 September 24

Meet the candidates and vote in our 2024 Board elections

On behalf of the Nominating Committee, I’m pleased to share the slate of candidates for the 2024 board election. Each year we do an open call for board interest. This year, the Nominating Committee received 53 submissions from members worldwide to fill four open board seats. We maintain a balanced board of 8 large member seats and 8 small member seats. Size is determined based on the organization’s membership tier (small members fall in the $0-$1,650 tiers and large members in the $3,900 - $50,000 tiers).

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Documentation

Required, recommended, and optional metadata

Each record type we support has a unique set of requirements and recommended metadata. Contributor metadata is consistent across record types and, while not always required, has consistent recommendations if present.

Required metadata must be included or your submission will be rejected. Recommended metadata should be included to create a complete metadata record. Optional metadata should be included if relevant, but will not be relevant for most records.

Find required, recommended and optional metadata for:

Contributor metadata

Required
Surname
Recommended
given_name, suffix, affiliation, ORCID

Journal and article metadata

Required
Journal (journal_metadata)full_title, ISSN or title-level DOI and URL
Issue (issue_metadata)issue, publication_date (year)
Article (article_metadata)titles, publication_date (year), doi_data

Issue elements are only required if a DOI is being deposited at the issue level. Article elements are likewise only required for article DOI deposits.

Recommended
Journal (journal_metadata)abbrev_title, doi_data, coden, journal_issue, archive-locations (with one archive name), title-level DOI and URL
Issue (issue_metadata)publication_date (month, day), journal_volume, contributors, issue, doi_data
Article (article_metadata)contributors, ORCID, publication_date (day, month), pages (first_page, last_page), citation_list, funding, license, Crossmark metadata and JATS-formatted abstracts
Optional
publisher_item, special_numbering, component_list

Book metadata

Required
Seriestitles, ISSN, volume, publication_date (year), publisher (publisher_name)
Settitles, volume
Booktitles, publication_date (year), publisher
Chapterdoi_data
Recommended
Seriesdoi_data,edition_number, ISBN, contributors, coden, series_number, citation_list
Setcontributors, ISBN, edition_number, citation_list, doi_data
Bookcontributors, ISBN, edition_number, doi_data, citation_list, funding, license, and Crossmark metadata
Chaptercontributors, titles, pages, publication_date, citation_list, funding, license, and Crossmark metadata
Optional
publisher_item, part_number, component_number,component_list

Conference Proceeding metadata

Required
Seriestitles, ISSN
Proceeding levelproceedings_title, publisher, publication_date (year)
Conference papercontributors, titles, doi_data
Recommended
Series leveldoi_data, contributors, series_number, ISBN
Conference levelvolume, contributors, ISBN, event_metadata (conference_date, conference_location, conference_acronym, conference_theme, conference_sponsor, conference_number), proceedings_subject
Conference paperpublication_date, pages, citation_list, funding, license, and Crossmark metadata
Optional
publisher_item, coden, component_list

Dataset metadata

Required
Database leveltitles
Dataset leveldoi_data
Recommended
Database levelcontributors, description, database_date, publisher, institution, doi_data
Dataset levelcontributors, titles, database_date, description, format, citation_list, component_list, funding, license, and Crossmark metadata
Optional
publisher_item, component_list

Dissertation metadata

Required
titles, approval_date, institution, doi_data
Recommended
contributors, ISBN, degree, ORCID, funding, license, and Crossmark metadata
Optional
citation_list, component_list

Posted content metadata

Required
titles, posted_date, doi_data
Recommended
group_title, contributors, acceptance_date, institution, item_number, abstracts, doi_data, citation_list, funding, license, Crossmark metadata and JATS-formatted abstracts
Optional
component_list

Report / Working paper metadata

Required
Series leveltitles, ISSN
Report leveltitle, publication_date (year)
Recommended
Series levelcontributors, coden, series_number, volume, doi_data, edition_number, approval_date, publisher, institution, doi_data, citation_list
Report levelcontributors, ORCIDs, edition_number, approval_date, ISBN, publisher, institution, citation_list, funding, license, and Crossmark metadata
Optional
publisher_item, contract_number

Standard metadata

Required
Standard leveltitle, designator, approval_date, standard_body_name, standard_body_acronym
Item levelcontributors, titles, component_number, publication_date (year), pages, publisher_item, doi_data
Recommended
Standard levelcontributors, edition_number, ISBN, institution, citation_list, funding, license, and Crossmark metadata metadata
Item levelcitation_list
Optional
publisher_item, content_item, component_list

Peer Review metadata

Required
title, review_date (year), relation (isReviewOf)
Recommended
contributors, institution, competing_interest_statement, running_number, license metadata

Page owner: Patricia Feeney   |   Last updated 2021-May-13