embedding self-describing bibtex in dvi or pdf

[Mike Marchywka]

Do these or other formats support this ?
For the DVI I can make a special that could be discovered with a dvi
interpretter or just a dumb file reader if it is unique enough. PDF I know
has a lot of flexibility but not sure what exists for this or if there
already is a well known generally accepted approach to put in 
machine readable citation info.

I could imagine tex macro for self info fields but not sure I have ever
seen one.  pdfinfo comes close for pdf, I guess if you could add arbitrary
key-value pairs this would work . What existing tex would let me insert stuff
here to read later for bibtex extraction?   

pdfinfo cases.pdf
Title:          
Subject:        
Keywords:       
Author:         
Creator:        LaTeX with hyperref package
Producer:       pdfTeX-1.40.16
CreationDate:   Tue Oct 29 04:51:45 2019
ModDate:        Tue Oct 29 04:51:45 2019
Tagged:         no
UserProperties: no
Suspects:       no
Form:           none
JavaScript:     no
Pages:          738
Encrypted:      no
Page size:      612 x 792 pts (letter)
Page rot:       0
File size:      10873604 bytes
Optimized:      no
PDF version:    1.5
 

Thanks.

-- 

mike marchywka
306 charles cox
canton GA 30115
USA, Earth 
marchywka at hotmail.com
404-788-1216
ORCID: 0000-0001-9237-455X