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🧾UUID and SHA-256 in PREMIS: Why objectIdentifier and fixity Live in Separate Fields

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.

premisuuidsha256digitalpreservation

Probing the Public APIs of the Tohoku University Digital Archives — Exporting per-setSpec Excel via OAI-PMH

I surveyed which public APIs are available on the Tohoku University Digital Archives (touda.tohoku.ac.jp/collection) and worked out a procedure to harvest metadata per setSpec via OAI-PMH and write each set into its own Excel file.

oaipmhiiifpythonopenpyxl