{% assign ver_string = order.id | append: shop.permanent_domain %}{% assign hmac_verification = ver_string | hmac_sha256: shop.metafields.ds_fakturoid.display_invoice %}{{order.id}}{{shop.permanent_domain}}{hmac_verification}}
{% assign ver_string = order.id | append: shop.permanent_domain %}{% assign hmac_verification = ver_string | hmac_sha256: shop.metafields.ds_fakturoid.display_invoice %}{{order.id}}{{shop.permanent_domain}}{hmac_verification}}