Fixity, the property of a digital file or object being fixed or unchanged, is a cornerstone of digital preservation. Fixity information, from simple file counts or file size values to more precise checksums and cryptographic hashes, is data used to verify whether an object has been altered or degraded. Many in the preservation community know …
The following is a guest post by Jefferson Bailey, Strategic Initiatives Manager at Metropolitan New York Library Council, National Digital Stewardship Alliance Innovation Working Group co-chair and a former Fellow in the Library of Congress’s Office of Strategic Initiatives. Here on The Signal, members of the NDSA Levels of Digital Preservation team have been providing some …
How do I know if a digital file/object has been corrupted, changed or altered? Further how can I prove that I know what I have? How can I be confident that the content I am providing is in good condition, complete, or reasonably complete? How do I verify that a file/object has not changed over …
As artists have embraced a range of new media and forms in the last century as the work of collecting, conserving and exhibiting these works has become increasingly complex and challenging. In this space, Richard Rinehart and Jon Ippolito have been working to develop and understand approaches to ensure long-term access to digital works. In …
The following is a guest post from Jane Mandelbaum, co-chair of the National Digital Stewardship Alliance Innovation Working group and IT Project Manager at the Library of Congress. The NDSA Levels of Digital Preservation are useful in providing a high-level, at-a-glance overview of tiered guidance for planning for digital preservation. One of the most common requests received …
