Moving a podcast, newsletter, blog, or content feed? I will compare the old and new public feed endpoints and return a deterministic migration receipt.

The check covers delivery, redirects, feed format, parse errors, required fields, invalid URLs and dates, freshness, duplicate entries, entry-count drift, normalized item identity, and reusable cache validators. Every result is pass, fail, or unknown with observed evidence.

Included: one source and one destination feed, up to 500 normalized entries per feed, a migration-difference summary, JSON/CSV evidence, and one rerun within seven days.

No hosting login, podcast-platform credential, CMS access, or call is required. This is not a directory-submission service or certification of every vendor-specific podcast extension.