[Question] Get articles access status by doi?

[hktang]

Hi,

I am researching the percentage of open access papers cited in a report which lists about 5000 references.

Is it possible to return the open-access status of a piece of work by searching its DOI?

Thanks and best regards,
H

[weirdf0x]

http://api.crossref.org/works/<doi> - check the licence field for a Creative Commons or similar OA license.

[hktang]

That's what I am looking for. Really appreciate it!

[hktang]

Hi, I extracted the data and found a vast majority of the URLs under the "license" field point to "text and data mining license", instead of the licence for the article itself as I was expected. Examples are this one, this one and many others.

There are also URLs to Creative Commons licences (about 10% of all items with "license" info). My question is, can I safely assume these licenses are for the articles themselves, but not for "data-mining"?