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 184.108.40.206, 220.127.116.11, 18.104.22.168, and 22.214.171.124 for details.
Digital Preservation Policy Librarian