copyright.example.txt

set Exif.Image.Artist                                      "Xyz Derewonko"
set Iptc.Application2.Byline                     String     Artist Name
set Xmp.dc.creator                                          Artist Name

set Iptc.Application2.BylineTitle                String     Photographer

set Iptc.Application2.Credit                     String     Artist Brand Name
set Xmp.dc.credit                                           Artist Brand Name

set Iptc.Application2.Source                     String     https://www.yourwebsite.com
set Iptc.Application2.CountryName                String     US

# Iptc.Application2.ObjectName is pretty much the title of the picture
set Iptc.Application2.ObjectName                 String     title of the picture
set Xmp.dc.title                                 lang=en-US title of the picture
set Xmp.dc.description                   LangAlt lang=en-US description of the picture

set Exif.Image.Copyright                                    Copyright 2021, Artist Name. Some rights reserved.
set Iptc.Application2.Copyright                  String     © 2021, Artist Name. Some rights reserved.
set Xmp.dc.rights                                lang=en-US © 2021, Artist Name. Some rights reserved.

set Xmp.dc.publisher                                        https://www.yourwebsite.com

# THESE ARE YOUR TAGS; All tage must be separated by comma + space
# add == replace all the tag bags by the one below;           this effectively REPLACES ALL tags
# set == add the tag bags below to the existing one, if any;  this effectively ADD UP more tags
add Xmp.dc.subject                               XmpBag     USA, AZ, Phoenix
set Xmp.dc.subject                               XmpBag     People, Person, John Doe

# Sample Exiv2 command file https://exiv2.org/sample.html
# -------------------------
#
# $ exiv2 -m cmd.txt file ...
#
# to apply the commands in cmd.txt to each file. Alternatively, commands can be 
# run from the command line directly, without a command file: 
#
# $ exiv2 -M"add Iptc.Application2.Credit String mee too!" file ...
# $ exiv2 -M"set Xmp.dc.subject LangAlt lang=en-US USA, AZ, Phoenix" file ...
#
# Note the quotes. Multiple -m and -M options are allowed and can be combined.
# 
# Command file format
# -------------------
# Empty lines and lines starting with # are ignored
# Each remaining line is a command. The format for command lines is
# <cmd> <key> [[<type>] <value>] 
# cmd = set|add|del
#    set will set the value of an existing tag of the given key or add a tag
#    add will add a tag (unless the key is a non-repeatable IPTC key)
#    del will delete a tag 
# key = Exiv2 Exif or IPTC key
# type = 
#    Byte|Ascii|Short|Long|Rational|Undefined|SShort|SLong|SRational|Comment
#       for Exif keys, and
#    String|Date|Time|Short|Undefined  for IPTC keys
#    The format for IPTC Date values is YYYY-MM-DD (year, month, day) and
#    for IPTC Time values it is HH:MM:SS±HH:MM where HH:MM:SS refers to local 
#    hour, minute and seconds and ±HH:MM refers to hours and minutes ahead or 
#    behind Universal Coordinated Time.
#    A default type is used if none is explicitly given. The default type
#    is determined based on the key.
# value 
#    The remaining text on the line is the value. It can optionally be enclosed in 
#    double quotes ("value")
#

# examples: https://blog.laurencebichon.com/en/metadata-copyright-example-for-a-freelance-photographer/