{"payload":{"schema_version":"research-record-v0","publication":{"version":2,"sha256":"e5fa18f9caa255048eb1bdc31df6101872ef09f5552f6659e1c9ca60b565eb15","published_at":"2026-09-30T20:42:00.990040+00:00","reason":"Correct classification to MSC2020 57K30 and 57R60 after checking the official AMS/zbMATH taxonomy; retain the attributed Clay status.","withdrawn":false,"draft":{"schema_version":"research-record-v0","problem":{"problem_id":"problem-poincare-conjecture","slug":"poincare-conjecture","title":"Poincaré conjecture","question":"Is every closed, simply connected three-dimensional manifold homeomorphic to the three-sphere?","scope":"Topological manifolds in dimension three; the source reports the problem as solved.","aliases":["Poincaré conjecture"],"fields":["Topology","Geometry"],"msc":["57K30","57R60"],"topics":[],"background":"graduate","scale":"known theorem","depth":"source-linked","source_entry_ids":["poincare-conjecture:entry:0:v1"],"status_report_ids":["poincare-conjecture:report:0:v1"],"editorial":null,"literature":[{"title":"Clay problem page and official description","url":"https://www.claymath.org/millennium/poincare-conjecture/","note":"Source state checked on 1 October 2026. The page does not provide a status-update date; current literature has not been independently reviewed."}],"formalizations":[],"related":[],"tasks":[],"insights":[],"coverage_gaps":["No exhaustive literature or source-list coverage.","Independent mathematical assessment has not been performed."],"checked_on":"2026-10-01"},"sources":[{"id":"clay-millennium@observed-2026-10-01","source_id":"clay-millennium","title":"Clay · Millennium Problems","owner":"Clay Mathematics Institute","url":"https://www.claymath.org/millennium-problems/","subject_scope":"Seven Millennium Prize Problems; five selected here","revision":"observed-2026-10-01","content_sha256":null,"update_method":"Manual checked import; new observations require staff preview and publication","identifier_policy":"Canonical source URL plus explicit item/declaration locator; no fuzzy identity merge","observed_on":"2026-10-01","source_updated_on":null,"rights":"metadata-link","license":"Not established; links and OpenMath paraphrases only","terms_url":"https://www.claymath.org/millennium-problems/","attribution":"Clay Mathematics Institute","rights_note":"Store metadata and original OpenMath paraphrases; follow the original source for authoritative wording.","check_interval_days":30}],"entries":[{"id":"poincare-conjecture:entry:0:v1","source_version_id":"clay-millennium@observed-2026-10-01","item_id":"https://www.claymath.org/millennium/poincare-conjecture/","url":"https://www.claymath.org/millennium/poincare-conjecture/","wording":"Is every closed, simply connected three-dimensional manifold homeomorphic to the three-sphere?","wording_kind":"paraphrase","locator":"https://www.claymath.org/millennium/poincare-conjecture/","supersedes":null}],"reports":[{"id":"poincare-conjecture:report:0:v1","entry_id":"poincare-conjecture:entry:0:v1","state":"resolved","source_label":"Solved","scope":"The cited source item and version only; this is not an independent OpenMath assessment.","source_date":null,"observed_on":"2026-10-01","evidence_url":"https://www.claymath.org/millennium/poincare-conjecture/","supersedes":null}]},"status":{"state":"resolved","label":"Reported resolved","extent":"unspecified","summary":"Resolution scope has not been assessed in this publication.","basis":"source","attributed_to":"Clay · Millennium Problems","as_of":"2026-10-01","progress_label":null,"progress_claim_ids":[],"remaining":null,"views":["resolved"]}},"data_mode":"published catalog snapshot; historical Phase 0 checks only","context_packs":[],"reference_fixture_checks":[],"repeat_instructions":"No verification task is attached to this discovery record."},"payload_sha256":"eb7ab29a5086cca6437a5e94c9e8ff41a2e4eb88c789ec5a20f81d560b04f4f5","canonicalization":"RFC 8785 JSON Canonicalization Scheme. Hash the payload, excluding this envelope. Immutable embedded domain hashes retain their original profile."}