Verify a legal citation against the served corpus: confirms the cited provision exists and is retrievable, and returns its current served text so a quoted claim can be compared against what the provision says now. Use this when someone asks 'is this citation correct' or 'check whether Article 28 GDPR still says this' — answer the latter by comparing the returned text with the claim. It does NOT assert legal in-force status and does NOT consult amendment feeds; a valid verdict means the citation resolves in the corpus we serve. For a provision-level change comparison use diff. The text content is one JSON document. Its evidence_summary field carries the 'Sources used' markdown table (the audit receipt per returned row) or a labelled zero-result note. Result rows carry url/title/subtitle display fields alongside their citation when available. meta.render_contract carries the versioned evidence-curation contract.