• Compare required and present bag-info metadata element names and report missing BagIt profile tags case-insensitively.
• Apply the same explicit rule consistently during ingest, quality control, reporting, or preservation planning.
• Expose records that need human review without silently rewriting the source data.

RFC 8493 metadata element names are case-insensitive, so Bagging-Date and bagging-date identify the same element.^[1]

• This checks name presence only; it does not parse bag-info.txt, validate values, check repeatability, or verify payload/tag manifests.
• Preserve the original value and record the rule version when using this result in an archival workflow.

• Checksum Fixity Verification Pass-Fail Comparator

  Use Checksum Fixity Verification Pass-Fail Comparator to compare expected and recomputed checksum strings after trimming whitespace and normalizing hexadecimal letter case. Choose this tool when you need to compare required and present bag-info metadata element names and report missing BagIt profile tags case-insensitively.

• ISO 8601 Date Interval Format Validator

  Use ISO 8601 Date Interval Format Validator to validate a practical ISO 8601 start/end interval subset with real Gregorian dates, clock ranges, offsets, and durations. Choose this tool when you need to compare required and present bag-info metadata element names and report missing BagIt profile tags case-insensitively.