You could prototype this with the data in crossref at the moment. They don't have full citation coverage (basically nobody does, it's a bugger of a problem), bu

You could prototype this with the data in crossref at the moment. They don't have full citation coverage (basically nobody does, it's a bugger of a problem), but there should be enough there to try out some ideas with real world data (and free data with an API). > We would first need to solve the versioning problem where there's no way to update a paper when mistakes are discovered or simply to improve it. You can certainly update what a DOI points to.