Re: WGS84/NAD83 Original to {current} transforms

> You mean the ones on
> https://webapp.geod.nrcan.gc.ca/geod/data-donnees/transformations.php ?
> Well, I think the Open Government Licence - Canada should be good enough
> given it is endorsed by https://opendefinition.org/licenses/
> 

I went ahead and submitted the provincial grids for inclusion:
https://github.com/OSGeo/PROJ/pull/1739
https://github.com/OSGeo/proj-datumgrid/pull/61

> Look for Trx and NTv2 tools.

PROJ doesn't support yet the epoch transformation method that
Trx / NAD83(CSRS) v7.0 velocity grid can do

Even

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