4.2.5 - The repository shall have access to necessary tools and resources to provide authoritative Representation Information for all of the digital objects it contains.
SP gathers all file format information for each file using authoritative and trusted tools. This information includes details about the file format, including a link to format registry. Please see 22.214.171.124, 126.96.36.199, 188.8.131.52, and 184.108.40.206 for details.
Digital Preservation Policy Librarian