Geoffrey Bilder

Geoffrey Bilder has led the technical development and launch of a number of industry initiatives at Crossref, including Similarity Check (formerly CrossCheck), Crossmark, ORCID and the Open Funder Registry (formerly FundRef). He co-founded Brown University’s Scholarly Technology Group in 1993, providing the Brown academic community with advanced technology consulting in support of their research, teaching and scholarly communication. He was subsequently head of IT R&D at Monitor Group, a global management consulting firm. From 2002 to 2005, Geoffrey was Chief Technology Officer of scholarly publishing firm Ingenta, and just prior to joining Crossref, he was a Publishing Technology Consultant at Scholarly Information Strategies.

Read more about Geoffrey Bilder on their team page.

Time to put the “R” back in “R&D”

Geoffrey Bilder

Geoffrey Bilder – 2021 June 07

In StrategyLabsR&D

It is time to put the ‘R’ back into R&D. The Crossref R&D team was originally created to focus on the kinds of research projects that have allowed Crossref to make transformational technology changes, launch innovative new services, and engage with entirely new constituencies. Some Illustrious projects that had their origins in the R&D group include: DOI Content Negotiation Similarity Check (originally CrossCheck) ORCID (originally Author DOIs) Crossmark The Open Funder Registry The Crossref REST API Linked Clinical Trials Event Data Grant registration ROR And for each project that has graduated, there have been several that have not.

Stepping up our deposit processing game

Some of you who have submitted content to us during the first two months of 2021 may have experienced content registration delays. We noticed; you did, too. The time between us receiving XML from members, to the content being registered with us and the DOI resolving to the correct resolution URL, is usually a matter of minutes. Some submissions take longer - for example, book registrations with large reference lists, or very large files from larger publishers can take up to 24 to 48 hours to process.

Crossref’s Board votes to adopt the Principles of Open Scholarly Infrastructure


On November 11th 2020, the Crossref Board voted to adopt the “Principles of Open Scholarly Infrastructure” (POSI). POSI is a list of sixteen commitments that will now guide the board, staff, and Crossref’s development as an organisation into the future. It is an important public statement to make in Crossref’s twentieth anniversary year. Crossref has followed principles since its founding, and meets most of the POSI, but publicly committing to a codified and measurable set of principles is a big step. If 2019 was a reflective turning point, and mid-2020 was about Crossref committing to open scholarly infrastructure and collaboration, this is now announcing a very deliberate path. And we’re just a little bit giddy about it.

Helping researchers identify content they can text mine

Geoffrey Bilder

Geoffrey Bilder – 2020 April 16

In MetadataCommunityAPIs

TL;DR Many organizations are doing what they can to aid in the response to the COVID-19 pandemic. Crossref members can make it easier for researchers to identify, locate, and access content for text mining. In order to do this, members must include elements in their metadata that: Point to the full text of the content. Indicate that the content is available under an open access license or that it is being made available for free (gratis).

Accidental release of internal passwords, & API tokens for the Crossref system

TL;DR On Wednesday, October 2nd, 2019 we discovered that we had accidentally pushed the main Crossref system as part of a docker image into a developer’s account on Docker Hub. The binaries and configuration files that made up the docker image included embedded passwords and API tokens that could have been used to compromise our systems and infrastructure. When we discovered this, we immediately secured the repo, changed all the passwords and secrets, and redeployed the system code.

Underreporting of matched references in Crossref metadata

Geoffrey Bilder

Geoffrey Bilder – 2019 February 05

In APIsCitationMetadata


About 11% of available references in records in our OAI-PMH & REST API don’t have DOIs when they should. We have deployed a fix, but it is running on billions of records, and so we don’t expect it to be complete until mid-April.

Note that the Cited-by API that our members use appears to be unaffected by this problem.

Status, I am new

Hi, I’m Isaac. I’m new here. What better way to get to know me than through a blog post? Well, maybe a cocktail party, but this will have to do. In addition to giving you some details about myself in this post, I’ll be introducing our status page, too.

Redirecting redirection

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.

Global Persistent Identifiers for grants, awards, and facilities

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…

Taking the “con” out of conferences


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 and include the text conference identifiers WG in the subject heading.

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