diff --git a/ia-derive b/ia-derive
index d62cf74..506d2e4 100755
--- a/ia-derive
+++ b/ia-derive
@@ -1,16 +1,4 @@
 #!/bin/bash
 identifier="$1"
 if [[ -z "${identifier}" ]]; then exit 1; fi
-
-cookies="$(grep '^logged-in-' ~/.config/ia.ini | sed 's, = ,=,' | tr '\n' ';' | sed 's,;$,,; s,;,; ,')"
-
-result="$(curl -s -H "Cookie: ${cookies}" "https://archive.org/manage/${identifier}" --data "identifier=${identifier}&admin=derive")"
-
-main="$(tr -d '\n' <<<"${result}" | grep -Po '<main.*</main>')"
-catalogueUrl="$(grep -Po 'task ID: <a href="\Khttps://catalogd\.archive\.org/log/\d+' <<<"${main}")"
-if [[ "${catalogueUrl}" ]]
-then
-	echo "success: ${catalogueUrl}"
-else
-	echo "error: $(sed 's,<[^>]\+>,,g' <<< "${main}")"
-fi
+exec ia tasks "${identifier}" --cmd derive.php