Cross-source identifiers
Every current identifier attachment, with the link method and confidence carried verbatim — deterministic links are 1.000; probabilistic links surface their real matcher confidence, never rounded up.
| Scheme | Value | Source table | Link method | Confidence | Since | Provenance |
|---|---|---|---|---|---|---|
| pac_id | 0042357444 | snf_all_owners | deterministic_pac_in_all_owners | 1.000 | 2026-06-14 | evidencerecorded: 2026-06-14 methodology: entity-graph/v1 evidence: {"rule":"D-OWNER","source_pk":172522,"type_owner":"I","enrollment_id":"O20170920000686"} |
Graph edges
One-hop relationships — ownership, chain membership, operation — each backed by a federal source row.
| Relationship | Entity | Confidence | Source table | Provenance |
|---|---|---|---|---|
| owns → | BEAVER VALLEY HOSPITAL (UT) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-14 methodology: entity-graph/v1 attributes: {"role_code":"40","association_date":"06/29/2017","percentage_ownership":100} evidence: {"rule":"D-OWNER","owner_pac":"0042357444","source_pk":172522,"type_owner":"I","enrollment_id":"O20170920000686","role_code_owner":"40","role_text_owner":"CORPORATE OFFICER","dst_resolved_via":"pac_id","percentage_ownership_raw":100,"enrollment_organization_name":"BEAVER VALLEY HOSPITAL"} |
| owns → | FANNIN COUNTY HOSPITAL AUTHORITY (TX) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-14 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"09/01/2022","percentage_ownership":100} evidence: {"rule":"D-OWNER","owner_pac":"0042357444","source_pk":220954,"type_owner":"I","enrollment_id":"O20220506000248","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pac_id","percentage_ownership_raw":100,"enrollment_organization_name":"FANNIN COUNTY HOSPITAL AUTHORITY"} |
| owns → | MAVERICK COUNTY HOSPITAL DISTRICT (TX) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-14 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"08/01/2022","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"0042357444","source_pk":224618,"type_owner":"I","enrollment_id":"O20220818000247","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pac_id","percentage_ownership_raw":null,"enrollment_organization_name":"MAVERICK COUNTY HOSPITAL DISTRICT"} |
| owns → | FRIO HOSPITAL DISTRICT (TX) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-14 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"02/01/2025","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"0042357444","source_pk":253881,"type_owner":"I","enrollment_id":"O20240507003550","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pac_id","percentage_ownership_raw":null,"enrollment_organization_name":"FRIO HOSPITAL DISTRICT"} |
| owns → | BEAVER VALLEY HOSPITAL (UT) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"40","association_date":"06/29/2017","percentage_ownership":100} evidence: {"rule":"D-OWNER","owner_pac":"0042357444","source_pk":172522,"type_owner":"I","enrollment_id":"O20170920000686","role_code_owner":"40","role_text_owner":"CORPORATE OFFICER","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":100,"enrollment_organization_name":"BEAVER VALLEY HOSPITAL"} |
| owns → | COPPER RIDGE NURSING AND REHAB CENTER LLC (MT) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"35","association_date":"02/01/2018","percentage_ownership":50} evidence: {"rule":"D-OWNER","owner_pac":"0042357444","source_pk":177586,"type_owner":"I","enrollment_id":"O20180320000721","role_code_owner":"35","role_text_owner":"5% OR GREATER INDIRECT OWNERSHIP INTEREST","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":50,"enrollment_organization_name":"COPPER RIDGE NURSING AND REHAB CENTER LLC"} |
| owns → | FARGO NURSING AND REHAB CENTER, LLC (ND) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"35","association_date":"07/18/2018","percentage_ownership":50} evidence: {"rule":"D-OWNER","owner_pac":"0042357444","source_pk":179774,"type_owner":"I","enrollment_id":"O20180612002721","role_code_owner":"35","role_text_owner":"5% OR GREATER INDIRECT OWNERSHIP INTEREST","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":50,"enrollment_organization_name":"FARGO NURSING AND REHAB CENTER LLC"} |
| owns → | ABERDEEN NURSING AND REHAB CENTER LLC (SD) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"35","association_date":"07/26/2018","percentage_ownership":50} evidence: {"rule":"D-OWNER","owner_pac":"0042357444","source_pk":180100,"type_owner":"I","enrollment_id":"O20180627001613","role_code_owner":"35","role_text_owner":"5% OR GREATER INDIRECT OWNERSHIP INTEREST","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":50,"enrollment_organization_name":"ABERDEEN NURSING AND REHAB CENTER LLC"} |
| owns → | CABEZON NURSING AND REHAB CENTER LLC (NM) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"35","association_date":"05/01/2018","percentage_ownership":50} evidence: {"rule":"D-OWNER","owner_pac":"0042357444","source_pk":181150,"type_owner":"I","enrollment_id":"O20180719002977","role_code_owner":"35","role_text_owner":"5% OR GREATER INDIRECT OWNERSHIP INTEREST","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":50,"enrollment_organization_name":"CABEZON NURSING AND REHAB CENTER LLC"} |
| owns → | SPEARFISH NURSING AND REHAB CENTER LLC (SD) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"35","association_date":"02/01/2019","percentage_ownership":50} evidence: {"rule":"D-OWNER","owner_pac":"0042357444","source_pk":187930,"type_owner":"I","enrollment_id":"O20190219001633","role_code_owner":"35","role_text_owner":"5% OR GREATER INDIRECT OWNERSHIP INTEREST","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":50,"enrollment_organization_name":"SPEARFISH NURSING AND REHAB CENTER LLC"} |
| owns → | BELLE FOURCHE NURSING AND REHAB CENTER LLC (SD) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"35","association_date":"02/01/2019","percentage_ownership":50} evidence: {"rule":"D-OWNER","owner_pac":"0042357444","source_pk":187941,"type_owner":"I","enrollment_id":"O20190219002749","role_code_owner":"35","role_text_owner":"5% OR GREATER INDIRECT OWNERSHIP INTEREST","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":50,"enrollment_organization_name":"BELLE FOURCHE NURSING AND REHAB CENTER LLC"} |
| owns → | FRESNO NURSING AND REHAB CENTER LLC (CA) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"35","association_date":"06/01/2019","percentage_ownership":100} evidence: {"rule":"D-OWNER","owner_pac":"0042357444","source_pk":193601,"type_owner":"I","enrollment_id":"O20190906001565","role_code_owner":"35","role_text_owner":"5% OR GREATER INDIRECT OWNERSHIP INTEREST","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":100,"enrollment_organization_name":"FRESNO NURSING AND REHAB CENTER LLC"} |
| owns → | CLANCY NURSING AND REHAB CENTER LLC (MT) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"35","association_date":"07/07/2020","percentage_ownership":100} evidence: {"rule":"D-OWNER","owner_pac":"0042357444","source_pk":204195,"type_owner":"I","enrollment_id":"O20201001002535","role_code_owner":"35","role_text_owner":"5% OR GREATER INDIRECT OWNERSHIP INTEREST","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":100,"enrollment_organization_name":"CLANCY NURSING AND REHAB CENTER LLC"} |
| owns → | HELENA NURSING AND REHAB CENTER LLC (MT) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"35","association_date":"07/07/2020","percentage_ownership":50} evidence: {"rule":"D-OWNER","owner_pac":"0042357444","source_pk":204201,"type_owner":"I","enrollment_id":"O20201001002974","role_code_owner":"35","role_text_owner":"5% OR GREATER INDIRECT OWNERSHIP INTEREST","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":50,"enrollment_organization_name":"HELENA NURSING AND REHAB CENTER LLC"} |
| owns → | BUTTE NURSING AND REHAB CENTER LLC (MT) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"35","association_date":"05/04/2020","percentage_ownership":100} evidence: {"rule":"D-OWNER","owner_pac":"0042357444","source_pk":205609,"type_owner":"I","enrollment_id":"O20201201001307","role_code_owner":"35","role_text_owner":"5% OR GREATER INDIRECT OWNERSHIP INTEREST","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":100,"enrollment_organization_name":"BUTTE NURSING AND REHAB CENTER LLC"} |
| owns → | BOISE NURSING AND REHAB CENTER LLC (ID) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"35","association_date":"01/01/2021","percentage_ownership":100} evidence: {"rule":"D-OWNER","owner_pac":"0042357444","source_pk":206867,"type_owner":"I","enrollment_id":"O20210113003149","role_code_owner":"35","role_text_owner":"5% OR GREATER INDIRECT OWNERSHIP INTEREST","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":100,"enrollment_organization_name":"BOISE NURSING AND REHAB CENTER LLC"} |
| owns → | FANNIN COUNTY HOSPITAL AUTHORITY (TX) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"09/01/2022","percentage_ownership":100} evidence: {"rule":"D-OWNER","owner_pac":"0042357444","source_pk":220954,"type_owner":"I","enrollment_id":"O20220506000248","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":100,"enrollment_organization_name":"FANNIN COUNTY HOSPITAL AUTHORITY"} |
| owns → | MAVERICK COUNTY HOSPITAL DISTRICT (TX) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"06/01/2022","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"0042357444","source_pk":222375,"type_owner":"I","enrollment_id":"O20220615002663","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"MAVERICK COUNTY HOSPITAL DISTRICT"} |
| owns → | MAVERICK COUNTY HOSPITAL DISTRICT (TX) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"06/01/2022","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"0042357444","source_pk":222505,"type_owner":"I","enrollment_id":"O20220621003303","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"MAVERICK COUNTY HOSPITAL DISTRICT"} |
| owns → | FANNIN COUNTY HOSPITAL AUTHORITY (TX) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"09/01/2022","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"0042357444","source_pk":223407,"type_owner":"I","enrollment_id":"O20220714002741","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"FANNIN COUNTY HOSPITAL AUTHORITY"} |
| owns → | FANNIN COUNTY HOSPITAL AUTHORITY (TX) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"09/01/2022","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"0042357444","source_pk":223558,"type_owner":"I","enrollment_id":"O20220720000475","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"FANNIN COUNTY HOSPITAL AUTHORITY"} |
| owns → | FANNIN COUNTY HOSPITAL AUTHORITY (TX) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"09/01/2022","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"0042357444","source_pk":223599,"type_owner":"I","enrollment_id":"O20220720002080","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"FANNIN COUNTY HOSPITAL AUTHORITY"} |
| owns → | MAVERICK COUNTY HOSPITAL DISTRICT (TX) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"08/01/2022","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"0042357444","source_pk":224618,"type_owner":"I","enrollment_id":"O20220818000247","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"MAVERICK COUNTY HOSPITAL DISTRICT"} |
| owns → | MAVERICK COUNTY HOSPITAL DISTRICT (TX) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"10/01/2022","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"0042357444","source_pk":227253,"type_owner":"I","enrollment_id":"O20221017001545","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"MAVERICK COUNTY HOSPITAL DISTRICT"} |
| owns → | MAVERICK COUNTY HOSPITAL DISTRICT (TX) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"10/01/2022","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"0042357444","source_pk":227257,"type_owner":"I","enrollment_id":"O20221017002162","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"MAVERICK COUNTY HOSPITAL DISTRICT"} |
| owns → | MAVERICK COUNTY HOSPITAL DISTRICT (TX) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"10/01/2022","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"0042357444","source_pk":227843,"type_owner":"I","enrollment_id":"O20221101002347","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"MAVERICK COUNTY HOSPITAL DISTRICT"} |
| owns → | MAVERICK COUNTY HOSPITAL DISTRICT (TX) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"10/01/2022","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"0042357444","source_pk":228911,"type_owner":"I","enrollment_id":"O20221208001447","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"MAVERICK COUNTY HOSPITAL DISTRICT"} |
| owns → | MAVERICK COUNTY HOSPITAL DISTRICT (TX) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"05/01/2023","percentage_ownership":0} evidence: {"rule":"D-OWNER","owner_pac":"0042357444","source_pk":237741,"type_owner":"I","enrollment_id":"O20230601001411","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":0,"enrollment_organization_name":"MAVERICK COUNTY HOSPITAL DISTRICT"} |
| owns → | MAVERICK COUNTY HOSPITAL DISTRICT (TX) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"05/01/2023","percentage_ownership":0} evidence: {"rule":"D-OWNER","owner_pac":"0042357444","source_pk":238053,"type_owner":"I","enrollment_id":"O20230608000917","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":0,"enrollment_organization_name":"MAVERICK COUNTY HOSPITAL DISTRICT"} |
| owns → | MAVERICK COUNTY HOSPITAL DISTRICT (TX) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"05/01/2023","percentage_ownership":0} evidence: {"rule":"D-OWNER","owner_pac":"0042357444","source_pk":238057,"type_owner":"I","enrollment_id":"O20230608001174","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":0,"enrollment_organization_name":"MAVERICK COUNTY HOSPITAL DISTRICT"} |
| owns → | BILLINGS NURSING AND REHAB CENTER LLC (MT) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"35","association_date":"06/01/2023","percentage_ownership":100} evidence: {"rule":"D-OWNER","owner_pac":"0042357444","source_pk":241515,"type_owner":"I","enrollment_id":"O20230816002291","role_code_owner":"35","role_text_owner":"5% OR GREATER INDIRECT OWNERSHIP INTEREST","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":100,"enrollment_organization_name":"BILLINGS NURSING AND REHAB CENTER LLC"} |
| owns → | YELLOWSTONE NURSING AND REHAB CENTER LLC (MT) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"35","association_date":"06/01/2023","percentage_ownership":100} evidence: {"rule":"D-OWNER","owner_pac":"0042357444","source_pk":241699,"type_owner":"I","enrollment_id":"O20230817003904","role_code_owner":"35","role_text_owner":"5% OR GREATER INDIRECT OWNERSHIP INTEREST","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":100,"enrollment_organization_name":"YELLOWSTONE NURSING AND REHAB CENTER LLC"} |
| owns → | GLENDIVE NURSING AND REHAB CENTER, LLC (MT) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"35","association_date":"05/05/2022","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"0042357444","source_pk":242703,"type_owner":"I","enrollment_id":"O20230907001871","role_code_owner":"35","role_text_owner":"5% OR GREATER INDIRECT OWNERSHIP INTEREST","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"GLENDIVE NURSING AND REHAB CENTER, LLC"} |
| owns → | FRIO HOSPITAL DISTRICT (TX) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"02/01/2025","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"0042357444","source_pk":253881,"type_owner":"I","enrollment_id":"O20240507003550","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"FRIO HOSPITAL DISTRICT"} |
Current record
Current claims returned for this entity, grouped by provenance subject. The table exposes the source identifier recorded for each claim.
Point-in-time
Query retained claim coordinates under bitemporal-read/v1. Most facts have no superseded row; dates outside retained coverage may return no prior version, and diffs require both coordinates.
Pick a date to reconstruct, or two dates to diff. Equivalent JSON: /api/v1/history/{subject_type}/{subject_id}?at=… and …/diff?from=…&to=…