 showing the level of physical control the repository actually has. A separate 
database/metadata catalog listing all of the digital objects in the repository and metadata 
sufficient to validate the integrity of those objects (file size, checksum, hash, location, 
number of copies, etc.) 
Discussion 
The repository must obtain complete control of the bits of the digital objects conveyed with 
each SIP. Sufficient physical and legal control is necessary for the archives to make any 
changes required by thei