A system includes a mold of a dental arch of a patient. The mold includes teeth extending from a first distal end of the dental arch to a second distal end of the dental arch. An orthodontic aligner is to be formed over the teeth of the mold. The teeth of the mold are shaped to correspond to tooth-receiving cavities of the orthodontic aligner. The system includes a pre-fabricated attachment that includes a traceability component configured to be used to determine one or more identifiers corresponding to the mold. The pre-fabricated attachment further includes a handling component configured to be secured by a robot or person to transport the mold and the pre-fabricated attachment during production of the orthodontic aligner.