KDP metadata should be checked in two columns: values read from the EPUB and values actually entered in KDP. In this run, the Rune Studio source card and exported OPF matched on title, author, language, publisher, and publication date. The KDP listing form, upload, and review were not used. The EPUB column is therefore verified, while the KDP column remains unverified and the overall status is partial.
Answer: Complete the EPUB column and reconcile KDP after real entry
A tool-independent preflight gathers source metadata, packaged EPUB metadata, and distributor-entry values in one table. Use one source of truth so differences in spelling, spacing, punctuation, and dates remain visible. A structurally valid EPUB does not automatically make the metadata entered on a retailer page identical.
Because this run did not open or submit the KDP form, the second column must not be filled with invented “verified” values. The useful outcome is a confirmed EPUB-side record that can later be copied into KDP and compared with what the page actually stores.
Sample: Five fields for 潮路の記録
The Rune Studio source card contained these five starting values:
| Field | Source-card value |
|---|---|
| Title | 潮路の記録 |
| Author | 森川澪 |
| Language | ja |
| Publisher | 白波書房 |
| Publication date | 2026-08-31 |
The preflight adds an OPF column and a KDP-entry column. Titles and names should be compared with their exact spacing and punctuation. Language should be semantically equivalent even if a user interface shows a language name instead of a code. The OPF date includes a time and time zone, so this run compared the calendar date first.
Procedure: Read the OPF back and leave KDP pending
Use this sequence:
- Confirm title, author, language, publisher, and publication date in one source card.
- Export an EPUB from that source.
- Read
dc:title,dc:creator,dc:language,dc:publisher, anddc:datefrom the OPF. - Compare the source card and OPF field by field.
- During real KDP entry, record the stored values in the same table and resolve any differences.
The article-specific Stage 4 run completed steps one through four in nine commands. Step five remains open because no KDP operation was performed. An OPF mismatch returns to the Rune Studio source card. A KDP mismatch returns to the KDP form. Manually patching the packaged EPUB would obscure which source owns the corrected value.
Measured result: All five EPUB fields matched the source card
The article-specific status was partial.
| Field | Source card | OPF | Actual KDP entry |
|---|---|---|---|
| Title | 潮路の記録 | 潮路の記録 | Unverified |
| Author | 森川澪 | 森川澪 | Unverified |
| Language | ja |
ja |
Unverified |
| Publisher | 白波書房 | 白波書房 | Unverified |
| Publication date | 2026-08-31 | 2026-08-31T12:00:00+09:00 | Unverified |
The recorded values mark title, author, language, publisher, and publication-day matches as true. Local structural validation also returned valid: true. The run therefore established a five-field EPUB-side reference for later KDP entry.
A separate common regression sample used two chapters, horizontal writing, and version 1.6. Its nine-command run produced spine count 6, one image, no missing resources, nav and NCX documents, and valid: true. That result checks the export path; it does not stand in for a KDP-form comparison.
Limits: KDP entry, upload, preview, and review were not tested
The run did not create a book in KDP Bookshelf, enter listing metadata, upload the EPUB, use the previewer, submit for review, or inspect a published detail page. With no external form evidence, none of the KDP cells can be marked as matched.
The OPF date was 2026-08-31T12:00:00+09:00, whereas the source card stored 2026-08-31. This run verified the calendar-day match. The date representation required or shown by KDP must be checked on the actual page. Local valid: true is not a KDP review result.
Rune Studio scope and KDP scope
Rune Studio's documented features cover title, author, publisher, and language in series information, plus version and publication date before EPUB 3 export. Generating the OPF and the rest of the EPUB package belongs to the documented Stage 3 product scope.
The five matching fields and valid: true are Stage 4 local measurements. KDP listing entry, upload, review, and public presentation are Amazon-side steps and were not part of the run. See W3C EPUB 3.3 for general EPUB requirements. Use Amazon KDP's Title Setup: Book Details, Content, & Pricing for the entry workflow and field guidance. Use the separate supported eBook manuscript formats page only for EPUB file support and Kindle Previewer guidance, not as evidence for the five metadata cells. The Rune Studio website describes the product scope.
Conclusion: The EPUB column is ready; the KDP column remains open
For 潮路の記録, the source card and OPF matched on title, author, ja, publisher, and the publication date of August 31, 2026. Local structural validation also passed.
Actual KDP entry, upload, and review remain unverified. During submission, compare the five-field sheet with the fields that actually appear in KDP and read the stored values back before declaring the two sides reconciled. Keep the Title Setup guide beside the entry sheet, and consult supported eBook manuscript formats only for the EPUB-file and Previewer step. Neither page turns this unperformed KDP entry into a verified match.
