“Since the beginning of 2009 GWDG runs on behalf of the Max Planck Society a PID service, based on the handle system (TM, http://www.handle.net/ ), for the allocation and resolution of persistent identifiers. Together with other european partners a consortium was build to provide this services to the european research community.”
“CNRI Handle Extension for Firefox enables the browser to access handle or DOI URIs like hdl:4263537/4000 or doi:10.1000/1 using the native Handle System protocol. It will even replace references to web-to-handle proxy servers with native resolution.”
DataCite held its first Summer Meeting in Hannover, Germany from June 7-8 and it was very successful. DataCite is a new international consortium of national libraries and data centers set up to "establish easier access to scientific research data on the Internet, increase acceptance of research data as legitimate, citable contributions to the scientific record, and to support data archiving that will permit results to be verified and re-purposed for future study."
Following the JISC seminar last week on persistent identifiers (#jiscpid on Twitter) there was some discussion about DOI and its role within a Linked Data context. John Erickson has responded with a very thoughtful post DOIs, URIs and Cool Resolution, which ably summarizes how the current problem with DOI in that the way the DOI is is implemented by the handle HTTP proxy may not have kept pace with actual HTTP developments. (For example, John notes that the proxy is not capable of dealing with 'Accept' headers.) He has proposed a solution, and the post has attracted several comments.
In order to encourage publishers and other content producers to embed metadata into their PDFs, we have released an experimental tool called "pdfmark", This open source tool allows you to add XMP metadata to a PDF. What's really cool, is that if you give the tool a CrossRef DOI, it will lookup the metadata in CrossRef and then apply said metadata to the PDF. More detail can be found on the pdfmark page on the CrossRef Labs site. The usual weasels words and excuses about "experiments" apply.
Inspired by Google's recent promotion of QR Codes, I thought it might be fun to experiment with encoding a CrossRef DOI and a bit of metadata into one of the critters. I've put a short write-up of the experiment on the CrossRef Labs site, which includes a demonstration of how you can generate a QR Code for any given CrossRef DOI.