Crossref has decided to change the HTTP redirect code used by our DOIs from
303 back to the more commonly used
302. Our implementation of 303 redirects back in 2010 was based on recommended best practice for supporting linked data identifiers. Unfortunately, very few other parties have adopted this practice.
Crossref’s Open Funder Registry (neé FundRef) now includes over 15 thousand entries. Crossref has over 2 million metadata records that include funding information - 1.7 million of which include an Open Funder Identifier. The uptake of funder identifiers is already making it easier and more efficient for the scholarly community to directly link funding to research outputs, but lately we’ve been hearing from a number of people that the time is ripe for a global grant identifier as well.
To that end, Crossref convened its funder advisory group along with representatives from our collaborator organizations, ORCID and DataCite, to explore the creation of a global grant identifier system.
We thought you might like to know about what we’ve been discussing…
Geoffrey Bilder – 2017 February 15
Crossref and DataCite are forming a working group to explore conference identifiers and project identifiers. If you are interested in joining this working group and in doing some actual work for it, please contact us at
firstname.lastname@example.org and include the text
conference identifiers WG in the subject heading.
Geoffrey Bilder – 2017 January 17
Recently we announced that we were making some new recommendations in our DOI display guidelines. One of them was to use the secure HTTPS protocol to link Crossref DOIs, instead of the insecure HTTP.
Geoffrey Bilder – 2016 June 29
Geoffrey Bilder – 2016 June 17
Geoffrey Bilder – 2016 May 05
By August 2016, Crossref will enable its members to assign Crossref DOIs to preprints. Preprint DOIs will be assigned by the Crossref member responsible for the preprint and that DOI will be different from the DOI assigned by the publisher to the accepted manuscript and version of record. Crossref’s display guidelines, tools and APIs will be modified in order to enable researchers to easily identify and link to the best available version of a document (BAV). We are doing this in order to support the changing publishing models of our members and in order to clarify the scholarly citation record.
Why is this news? Well, to understand that you need to know a little Crossref history.
Geoffrey Bilder – 2016 March 01
Geoffrey Bilder – 2015 June 11
Anybody who knows me or reads this blog is probably aware that I don’t exactly hold back when discussing problems with the DOI system. But just occasionally I find myself actually defending the thing…About once a year somebody suggests that we could replace existing persistent citation identifiers (e.g. DOIs) with some new technology that would fix some of the weaknesses of the current systems. Usually said person is unhappy that current systems like
Geoffrey Bilder – 2015 March 17
On January 20th, 2015 the main DOI HTTP proxy at doi.org experienced a partial, rolling global outage. The system was never completely down, but for at least part of the subsequent 48 hours, up to 50% of DOI resolution traffic was effectively broken. This was true for almost all DOI registration agencies, including Crossref, DataCite and mEDRA.
At the time we kept people updated on what we knew via Twitter, mailing lists and our technical blog at CrossTech. We also promised that, once we’d done a thorough investigation, we’d report back. Well, we haven’t finished investigating all implications of the outage. There are both substantial technical and governance issues to investigate. But last week we provided a preliminary report to the Crossref board on the basic technical issues, and we thought we’d share that publicly now.
2018 July 02
2018 June 20