Authenticating with the API

    curl -L -H "Accept: application/json" \
         -d "client_id=$ORCID_CLIENT_ID" \
         -d "client_secret=$ORCID_CLIENT_SECRET" \
         -d "scope=/read-public" \
         -d "grant_type=client_credentials" \
         "https://pub.orcid.org/oauth/token"
    {"access_token":"89f0181c-168b-4d7d-831c-1fdda2d7bbbb",
    "token_type":"bearer","refresh_token":"69e883f6-d84e-4ae6-87f5-ef0044e3e9a7",
    "expires_in":631138518,"scope":"/read-public","orcid":null}