Ugh, ignoring how C2PA doesn't authenticate or validate anything and doesn't even deter forgeries...
Implementations seem to ignore the C2PA specifications.
In the JUMBF block, there's often a JSON storing metadata. According to the spec, GPS coordinates should be in DMS format:
"exif:GPSLatitude": "39,21.102N",
"exif:GPSLongitude": "74,26.5737W",
Truepic:
EXIF:GPSLatitude : 42.959801300000
EXIF:GPSLongitude : -77.466807500000
( And reported in the CAI discord channel: )
Click App => "exif:GPSLatitude": "37 deg 52' 42.61 N"
Nikon => "exif:GPSLatitude": "40,44.1861N"
Proofmode => "exif:GPSLatitude": 36°58'37.381" N
I don't have examples from Click App, Nikon, or Proofmode, but I'm wondering if exiftool can handle the different formats?
ExifTool will likely handle these formats due to its flexible way of handling GPS coordinates (see FAQ 14 (https://exiftool.org/faq.html#Q14)).
- Phil