Hi,

I am rewriting the tool I use to build a knowledge graph (KG) of all RFCs and 
ancillary files[1], and I have some questions about what properties of an RFC 
are mutable.

— The “status” field in the JSON file (in the "ietf/rfc" directory from rsync) 
changes from time to time, as opposed to the “pub_status” field that was the 
status at publication time, and thus is immutable.  Is there a database with 
the changes, with timestamp, made to the “status” field? Something like 
https://www.rfc-editor.org/status_changes.php.

— Can the “format” field change, for example, when a new rendering file is 
added? (related question: I saw both “ASCII” and “TEXT” used in the JSON files. 
 What is the difference between these two formats?)

— Is the “keyword” field immutable?

— Disturbingly, RFCXML files are now mutable.  How do I know that an RFCXML 
file was modified and that I need to update my KG?

— I understand that the RFC(s) associated with STD and BCP change from time to 
time.  Here again, is there a database that provides a history of these changes?

— IPR disclosures can be added at any time to an RFC, but are they immutable?

— Is there other mutable properties of an RFC that I did not list here (apart 
the errata)?

Thank you.


[1] https://datatracker.ietf.org/doc/draft-petithuguenin-rfc-ontology/

-- 
Marc Petit-Huguenin
Email: m...@petit-huguenin.org
Blog: https://medium.com/@petithug
Profile: https://www.linkedin.com/in/petithug

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