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 | 5799696639 | 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":6944,"type_owner":"O","enrollment_id":"O20030717000008"} |
Graph edges
One-hop relationships — ownership, chain membership, operation — each backed by a federal source row.
| Relationship | Entity | Confidence | Source table | Provenance |
|---|---|---|---|---|
| owns → | DAVIESS COUNTY HOSPITAL (IN) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-14 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"02/01/2016","percentage_ownership":100} evidence: {"rule":"D-OWNER","owner_pac":"5799696639","source_pk":160946,"type_owner":"O","enrollment_id":"O20161018000287","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pac_id","percentage_ownership_raw":100,"enrollment_organization_name":"DAVIESS COUNTY HOSPITAL"} |
| owns → | THE LAURELS OF SUMMIT INN, INC (NC) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"02/01/2016","percentage_ownership":100} evidence: {"rule":"D-OWNER","owner_pac":"5799696639","source_pk":6944,"type_owner":"O","enrollment_id":"O20030717000008","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":100,"enrollment_organization_name":"THE LAURELS OF SUMMIT INN, INC"} |
| owns → | THE LAURELS OF GREENTREE RIDGE, INC (NC) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"01/02/2016","percentage_ownership":100} evidence: {"rule":"D-OWNER","owner_pac":"5799696639","source_pk":7015,"type_owner":"O","enrollment_id":"O20030717000033","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":100,"enrollment_organization_name":"THE LAURELS OF GREENTREE RIDGE, INC"} |
| owns → | LAUREL HEALTH CARE COMPANY OF NORTH CAROLINA, INC. (NC) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"02/01/2016","percentage_ownership":100} evidence: {"rule":"D-OWNER","owner_pac":"5799696639","source_pk":9947,"type_owner":"O","enrollment_id":"O20030918000000","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":100,"enrollment_organization_name":"LAUREL HEALTH CARE COMPANY OF NORTH CAROLINA, INC."} |
| owns → | LAUREL HEALTH CARE COMPANY OF CHATHAM NORTH CAROLINA, INC (NC) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"02/01/2016","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"5799696639","source_pk":12383,"type_owner":"O","enrollment_id":"O20031118000401","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"LAUREL HEALTH CARE COMPANY OF CHATHAM NORTH CAROLINA, INC"} |
| owns → | OAK HEALTH CARE INVESTORS OF SALISBURY, INC (NC) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"01/02/2016","percentage_ownership":100} evidence: {"rule":"D-OWNER","owner_pac":"5799696639","source_pk":12455,"type_owner":"O","enrollment_id":"O20031118000664","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":100,"enrollment_organization_name":"OAK HEALTH CARE INVESTORS OF SALISBURY, INC"} |
| owns → | OAK HEALTH CARE INVESTORS OF NORTH CAROLINA, INC (NC) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"02/01/2016","percentage_ownership":100} evidence: {"rule":"D-OWNER","owner_pac":"5799696639","source_pk":12478,"type_owner":"O","enrollment_id":"O20031118000930","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":100,"enrollment_organization_name":"OAK HEALTH CARE INVESTORS OF NORTH CAROLINA, INC"} |
| owns → | THE LAURELS OF CHARLOTTESVILLE, LLC (VA) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"02/01/2016","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"5799696639","source_pk":14319,"type_owner":"O","enrollment_id":"O20040122000949","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"THE LAURELS OF CHARLOTTESVILLE, LLC"} |
| owns → | LAUREL HEALTH CARE COMPANY OF HILLSBORO (OH) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"02/01/2016","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"5799696639","source_pk":37287,"type_owner":"O","enrollment_id":"O20060313000035","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"LAUREL HEALTH CARE COMPANY OF HILLSBORO"} |
| owns → | LAUREL HEALTH CARE COMPANY OF WORTHINGTON (OH) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"02/01/2016","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"5799696639","source_pk":37303,"type_owner":"O","enrollment_id":"O20060313000047","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"LAUREL HEALTH CARE COMPANY OF WORTHINGTON"} |
| owns → | LAUREL HEALTH CARE COMPANY OF NORTH WORTHINGTON (OH) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"01/02/2016","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"5799696639","source_pk":37323,"type_owner":"O","enrollment_id":"O20060313000093","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"LAUREL HEALTH CARE COMPANY OF NORTH WORTHINGTON"} |
| owns → | OAK HEALTH CARE INVESTORS OF MT VERNON, INC. (OH) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"02/01/2016","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"5799696639","source_pk":37345,"type_owner":"O","enrollment_id":"O20060313000121","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"OAK HEALTH CARE INVESTORS OF MT VERNON, INC."} |
| owns → | FAIRPORT ENTERPRISES, INC. (OH) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"01/01/2016","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"5799696639","source_pk":38049,"type_owner":"O","enrollment_id":"O20060327000291","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"FAIRPORT ENTERPRISES, INC."} |
| owns → | OAK HEALTH CARE INVESTORS OF DEFIANCE, INC. (OH) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"01/02/2016","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"5799696639","source_pk":38089,"type_owner":"O","enrollment_id":"O20060327000471","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"OAK HEALTH CARE INVESTORS OF DEFIANCE, INC."} |
| owns → | THE LAURELS OF UNIVERSITY PARK, LLC (VA) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"02/01/2016","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"5799696639","source_pk":42475,"type_owner":"O","enrollment_id":"O20061026000500","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"THE LAURELS OF UNIVERSITY PARK, LLC"} |
| owns → | THE LAURELS OF BON AIR, LLC (VA) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"02/01/2016","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"5799696639","source_pk":48783,"type_owner":"O","enrollment_id":"O20070511000549","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"THE LAURELS OF BON AIR, LLC"} |
| owns → | LAURELS OF JEFFERSON, LLC (OH) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"02/01/2016","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"5799696639","source_pk":62829,"type_owner":"O","enrollment_id":"O20080211000551","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"LAURELS OF JEFFERSON, LLC"} |
| owns → | THE LAURELS OF BLANCHESTER, LLC (OH) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"02/01/2016","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"5799696639","source_pk":83630,"type_owner":"O","enrollment_id":"O20091203000005","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"THE LAURELS OF BLANCHESTER, LLC"} |
| owns → | OAK HEALTH CARE INVESTORS OF RICHMOND VIRGINIA, INC. (VA) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"01/02/2016","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"5799696639","source_pk":86172,"type_owner":"O","enrollment_id":"O20100115000502","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"OAK HEALTH CARE INVESTORS OF RICHMOND VIRGINIA, INC."} |
| owns → | ATHENS LTC, INC (OH) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"02/01/2016","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"5799696639","source_pk":103141,"type_owner":"O","enrollment_id":"O20110720000389","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"ATHENS LTC, INC"} |
| owns → | THE LAURELS OF NEW LONDON, LLC (OH) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"02/01/2016","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"5799696639","source_pk":132105,"type_owner":"O","enrollment_id":"O20130924000106","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"THE LAURELS OF NEW LONDON, LLC"} |
| owns → | THE LAURELS OF HUBER HEIGHTS, LLC (OH) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"02/01/2016","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"5799696639","source_pk":132349,"type_owner":"O","enrollment_id":"O20131002000616","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"THE LAURELS OF HUBER HEIGHTS, LLC"} |
| owns → | THE LAURELS OF WEST CARROLLTON, LLC (OH) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"02/01/2016","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"5799696639","source_pk":132369,"type_owner":"O","enrollment_id":"O20131002000670","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"THE LAURELS OF WEST CARROLLTON, LLC"} |
| owns → | DAVIESS COUNTY HOSPITAL (IN) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"02/01/2016","percentage_ownership":100} evidence: {"rule":"D-OWNER","owner_pac":"5799696639","source_pk":160946,"type_owner":"O","enrollment_id":"O20161018000287","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":100,"enrollment_organization_name":"DAVIESS COUNTY HOSPITAL"} |
| owns → | THE LAURELS OF PENDER, LLC (NC) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"02/01/2017","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"5799696639","source_pk":169724,"type_owner":"O","enrollment_id":"O20170712003911","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"THE LAURELS OF PENDER, LLC"} |
| owns → | THE LAURELS OF CHAGRIN FALLS, LLC (OH) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"09/01/2017","percentage_ownership":100} evidence: {"rule":"D-OWNER","owner_pac":"5799696639","source_pk":172599,"type_owner":"O","enrollment_id":"O20170921002687","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":100,"enrollment_organization_name":"THE LAURELS OF CHAGRIN FALLS, LLC"} |
| owns → | THE LAURELS OF MILFORD, LLC (OH) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"06/30/2018","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"5799696639","source_pk":181015,"type_owner":"O","enrollment_id":"O20180718001168","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"THE LAURELS OF MILFORD, LLC"} |
| owns → | THE LAURELS OF GAHANNA, LLC (OH) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"06/30/2018","percentage_ownership":100} evidence: {"rule":"D-OWNER","owner_pac":"5799696639","source_pk":181091,"type_owner":"O","enrollment_id":"O20180719001148","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":100,"enrollment_organization_name":"THE LAURELS OF GAHANNA, LLC"} |
| owns → | THE LAURELS OF HAMILTON, LLC (OH) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"06/30/2018","percentage_ownership":100} evidence: {"rule":"D-OWNER","owner_pac":"5799696639","source_pk":181124,"type_owner":"O","enrollment_id":"O20180719001691","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":100,"enrollment_organization_name":"THE LAURELS OF HAMILTON, LLC"} |
| owns → | THE LAURELS OF MIDDLETOWN, LLC (OH) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"06/30/2018","percentage_ownership":100} evidence: {"rule":"D-OWNER","owner_pac":"5799696639","source_pk":181144,"type_owner":"O","enrollment_id":"O20180719001990","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":100,"enrollment_organization_name":"THE LAURELS OF MIDDLETOWN, LLC"} |
| owns → | THE LAURELS OF HEATH, LLC (OH) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"06/30/2018","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"5799696639","source_pk":181690,"type_owner":"O","enrollment_id":"O20180802002008","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"THE LAURELS OF HEATH, LLC"} |
| owns → | THE LAURELS OF WALDEN PARK, LLC (OH) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"06/30/2018","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"5799696639","source_pk":182025,"type_owner":"O","enrollment_id":"O20180809000673","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"THE LAURELS OF WALDEN PARK, LLC"} |
| owns → | THE LAURELS OF WEST COLUMBUS, LLC (OH) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"01/25/2021","percentage_ownership":100} evidence: {"rule":"D-OWNER","owner_pac":"5799696639","source_pk":202965,"type_owner":"O","enrollment_id":"O20200729003146","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":100,"enrollment_organization_name":"THE LAURELS OF WEST COLUMBUS, LLC"} |
| owns → | THE LAURELS OF KETTERING, LLC (OH) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"08/01/2021","percentage_ownership":100} evidence: {"rule":"D-OWNER","owner_pac":"5799696639","source_pk":212741,"type_owner":"O","enrollment_id":"O20210819002553","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":100,"enrollment_organization_name":"THE LAURELS OF KETTERING, LLC"} |
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=…