77a8603f_ervation__Library_of_Congress___Definition
[Term] Bit Preservation [Definition] 
A baseline preservation approach that ensures the integrity of digital objects and associated metadata over time in their original form, even as the physical storage media which houses them evolves and changes. Also known as "bit preservation."
NDSA Levels of Preservation Glossary - National Digital Stewardship Alliance - Digital Preservation (Library of Congress)
Definition