UUIDs and SHA-256 digests are not competing identifiers; they answer different questions. This piece works through the distinction using the PREMIS Data Dictionary, Archivematica's implementation, and the E-ARK specification.
Using real data, this organizes where the original structure and the rearranged structure are recorded in the SIP/AIP when you fold backlog files into folders via arrange and bundle them into a single SIP.
DataAccessioner is a desktop tool that, at the accessioning stage, captures MD5 and technical metadata via FITS to fix file identity before arrangement.
Testing Archivematica's Backlog and Appraisal features. A record of confirming on real hardware: the story behind the Appraisal tab removed in the development version, appraisal via Backlog search, and the mechanism by which the original state is preserved in the METS even when you change the structure through arrangement.
Trying Out METSFlask