Your best bet is probably to check package ids via daml damlc inspect-dar. Specifically find the main package id of your template DAR via daml damlc inspect-dar --json path/to/template.dar | jq '.main_package_id' (if you don’t have jq, just look at the main_packageid field in the output yourself.
Then check that the trigger dar depends on this by running daml damlc inspect-dar --json poc6/.daml/dist/canton-coin-0.1.0.dar | jq '.packages | keys' and checking that the package id you got from step 1 is part of that.