What do the created, deposited, indexed, issued, and published-print properties refer to?

[GaurangTandon]

I have been unable to find information for these in the official documentation. I was hoping for a bit of disambiguation between these properties as they all seem almost the same.

As far as I can guess, published-print refers to when the research paper was actually published in the journal, so that may be as old as 1960s or beyond. The created, deposited, indexed refer to dates on which that research paper got a Crossref entry, though I am not sure. Also, I've no clue about issued. Could you please clarify?

I need to know this because I am trying to generate citations for research papers given their DOIs (for example, J. Am. Chem. Soc. 1959, 81 (23), 6338–6339.). Currently, I was using the published-print property to get the correct date. However, for some research papers like this one, the published-print is undefined (it instead has the published-online property - which is inaccurate (the paper was published on 23/10/2015, but published-online states 2016 instead)).

[pdavis8]

Further information on these terms and what they mean can be found here: https://github.com/CrossRef/rest-api-doc/blob/master/api_format.md#work

[pdavis8]

I am going to close this ticket now but if you have any further questions then please do let us know.