77a8603f_ervation__Library_of_Congress___Definition
[Term] Chain of Custody [Definition] 
A process used to maintain and document the chronological history of the handling, including the transfer of ownership, of any arbitrary digital file from its creation to a final state version. See also "provenance."
NDSA Levels of Preservation Glossary - National Digital Stewardship Alliance - Digital Preservation (Library of Congress)
Definition