{"artifact":{"id":"h-var-bc4357c8c5","artifact_type":"hypothesis","entity_ids":null,"title":"Dopaminergic Ventral Tegmental-Hippocampal Circuit Protection","quality_score":0.5,"created_by":"etl-v1-backfill","provenance_chain":null,"content_hash":"f298af72e39f363efce3ef50f6a083ca696f507e9307c54c22c2906493ee8015","metadata":{"source":"v1_phase_c_backfill","origin_type":"gap_debate","_schema_version":1},"created_at":"2026-04-07T05:16:27.288545-07:00","updated_at":"2026-04-07T05:16:27.288545-07:00","version_number":3,"parent_version_id":null,"version_tag":null,"changelog":null,"is_latest":1,"lifecycle_state":"active","superseded_by":null,"deprecated_at":null,"deprecated_reason":null,"dependencies":null,"market_price":0.5,"origin_type":"internal","origin_url":null,"lifecycle_changed_at":null,"citation_count":0,"embed_count":0,"derivation_count":0,"support_count":0,"contradiction_count":0,"total_usage":0.0,"usage_score":0.5,"usage_computed_at":null,"quality_status":null,"contributors":[],"answers_question_ids":null,"deprecated_reason_detail":null,"deprecated_reason_code":null,"commit_sha":null,"commit_submodule":null,"last_mutated_at":"2026-05-16T14:51:34.657673-07:00","disputed_at":null,"gap_id":null,"mission_id":null,"intrinsic_priority":null,"effective_priority":null,"artifact_id":"d49a2d99-df3f-411d-9849-bc662ecf18f2","artifact_dir":null,"primary_filename":null,"accessory_filenames":null,"folder_layout_version":1,"migrated_to_folder_at":null,"hypothesis_id":null,"authorship":{"kind":"human","contributors":[{"role":"author","actor_ref":"etl-v1-backfill"}]},"epistemic_tier":"T3_provisional","created_by_agent_id":null},"outgoing_links":[],"incoming_links":[],"current_artifact_id":"h-var-bc4357c8c5","is_canonical":true,"supersede_chain":["h-var-bc4357c8c5"]}