When reading "vision.md", I find "Falsehoods programmers believe about WCA competitions" seems a bit out of place. I think some sort of explanation how this is connected to the vision would help. Idk exactly why you put it there, but maybe something like "the data format should force developers to think about these issues"? Or is it more like "even with this format, bugs are likely to appear unless people think about these issues".

Speedcubing Canada would like to automate generation of our competition announcement graphics. Example: https://www.instagram.com/p/CvDBfiZrNrX

Data that we have in the graphic, but is currently missing from the WCIF export: cityName, registration_open, and base_entry_fee_lowest_denomination (and I guess currency_code for completeness).

I would like to propose exposing at least this additional data (possibly more if it makes sense to also include registration_close as an example). Having this data in the export would be preferred over web scraping and I imagine that other ROs could benefit from this data if they are also seeking to automate competition announcements (perhaps for their own graphics or a mailing list).

When adding a qualification for 3x3x3 Multi-Blind of qualification type 'by result', level needs to be an AttemptResult. For MBF, an attempt result specifies more than just the points, but also the cubes attempted and the time. Should there be a standard specified in specification.md for a MBF qualification level, such as using n/n in 99999 (time unknown), or just specifying the number of points instead of using an attempt result? The former would keep everything working as is, and the latter would require some adjustments but would make it easier to use (I think).

#23 creates a new RegistrationInfo object. There is already a competitorLimit field on the top level WCIF, which would be better in that new object.

This is not important enough on its own for a breaking change, but when WCIF eventually migrates from v0 to v1 this should probably be included.

Now that the edit events page refactor has been done, we should be able to think about how to support this reg in the wcif.

Regulation A1a

I feel like this description is confusing. Can someone please elaborate? Because "An empty array the time limit applies to each attempt." is hard to understand. Is it meant to say "An empty array MEANS the time limit applies to each attempt"? Also, I think it should be elaborated, how this works when the array is not empty.