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 |
|---|---|---|---|---|---|---|
| npi | 1104717255 | nppes_providers | deterministic_pk | 1.000 | 2026-06-10 | evidencerecorded: 2026-06-10 methodology: entity-graph/v1 evidence: {"rule":"D-NPI","source_pk":"1104717255","entity_type_code":"2"} |
| pac_id | 8426548652 | pecos_providers | exact_npi_in_pecos | 1.000 | 2026-06-16 | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 evidence: {"npi":"1104717255","rule":"D-PECOS","enrlmt_id":"O20251106002829","pecos_asct_cntl_id":"8426548652"} |
| pecos_enrlmt_id | O20251106002829 | pecos_providers | exact_npi_in_pecos | 1.000 | 2026-06-16 | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 evidence: {"npi":"1104717255","rule":"D-PECOS","enrlmt_id":"O20251106002829"} |
Graph edges
One-hop relationships — ownership, chain membership, operation — each backed by a federal source row.
| Relationship | Entity | Confidence | Source table | Provenance |
|---|---|---|---|---|
| ← owns | TRYKO NEXGEN HOLDINGS LLC (NJ) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"35","association_date":"09/03/2025","percentage_ownership":56.8} evidence: {"rule":"D-OWNER","owner_pac":"0042615635","source_pk":279135,"type_owner":"O","enrollment_id":"O20251106002829","role_code_owner":"35","role_text_owner":"5% OR GREATER INDIRECT OWNERSHIP INTEREST","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":56.8,"enrollment_organization_name":"BRIGHTON OPERATOR LLC"} |
| ← owns | OWNER PAC 0749770972 (NJ) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"72","association_date":"08/06/2025","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"0749770972","source_pk":279137,"type_owner":"O","enrollment_id":"O20251106002829","role_code_owner":"72","role_text_owner":"ADP OF THE SNF","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"BRIGHTON OPERATOR LLC"} |
| ← owns | ISRAEL DISCOUNT BANK OF NEW YORK - IDB BANK OF YORK (NY) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"37","association_date":"09/03/2025","percentage_ownership":75} evidence: {"rule":"D-OWNER","owner_pac":"0840507661","source_pk":279138,"type_owner":"O","enrollment_id":"O20251106002829","role_code_owner":"37","role_text_owner":"5% OR GREATER SECURITY INTEREST","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":75,"enrollment_organization_name":"BRIGHTON OPERATOR LLC"} |
| ← owns | RELIANT PRO REHAB LLC (TX) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"09/29/2025","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"1759768047","source_pk":279139,"type_owner":"O","enrollment_id":"O20251106002829","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"BRIGHTON OPERATOR LLC"} |
| ← owns | OWNER PAC 1850881087 (NJ) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"72","association_date":"08/05/2025","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"1850881087","source_pk":279141,"type_owner":"O","enrollment_id":"O20251106002829","role_code_owner":"72","role_text_owner":"ADP OF THE SNF","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"BRIGHTON OPERATOR LLC"} |
| ← owns | BASHAR ALGHAZAWNEH | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"01/07/2026","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"2365955424","source_pk":279142,"type_owner":"I","enrollment_id":"O20251106002829","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"BRIGHTON OPERATOR LLC"} |
| ← owns | OWNER PAC 2466942693 (NY) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"72","association_date":"09/16/2025","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"2466942693","source_pk":279145,"type_owner":"O","enrollment_id":"O20251106002829","role_code_owner":"72","role_text_owner":"ADP OF THE SNF","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"BRIGHTON OPERATOR LLC"} |
| ← owns | YR NEXGEN TR (NJ) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"35","association_date":"09/03/2025","percentage_ownership":28.4} evidence: {"rule":"D-OWNER","owner_pac":"2860897451","source_pk":279146,"type_owner":"O","enrollment_id":"O20251106002829","role_code_owner":"35","role_text_owner":"5% OR GREATER INDIRECT OWNERSHIP INTEREST","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":28.4,"enrollment_organization_name":"BRIGHTON OPERATOR LLC"} |
| ← owns | MARQUIS LIMITED LLC (NJ) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"09/03/2025","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"3173053527","source_pk":279148,"type_owner":"O","enrollment_id":"O20251106002829","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"BRIGHTON OPERATOR LLC"} |
| ← owns | OWNER PAC 3274023403 | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"72","association_date":"09/29/2025","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"3274023403","source_pk":279150,"type_owner":"I","enrollment_id":"O20251106002829","role_code_owner":"72","role_text_owner":"ADP OF THE SNF","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"BRIGHTON OPERATOR LLC"} |
| ← owns | OWNER PAC 3678063807 (NJ) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"72","association_date":"08/05/2025","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"3678063807","source_pk":279151,"type_owner":"O","enrollment_id":"O20251106002829","role_code_owner":"72","role_text_owner":"ADP OF THE SNF","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"BRIGHTON OPERATOR LLC"} |
| ← owns | OWNER PAC 4183114317 | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"72","association_date":"09/29/2025","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"4183114317","source_pk":279152,"type_owner":"I","enrollment_id":"O20251106002829","role_code_owner":"72","role_text_owner":"ADP OF THE SNF","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"BRIGHTON OPERATOR LLC"} |
| ← owns | OWNER PAC 4284124413 (CT) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"72","association_date":"09/16/2025","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"4284124413","source_pk":279153,"type_owner":"O","enrollment_id":"O20251106002829","role_code_owner":"72","role_text_owner":"ADP OF THE SNF","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"BRIGHTON OPERATOR LLC"} |
| ← owns | YAAKOV WEINREB (MA) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"09/29/2025","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"4385779339","source_pk":279154,"type_owner":"I","enrollment_id":"O20251106002829","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"BRIGHTON OPERATOR LLC"} |
| ← owns | OWNER PAC 4587154711 (NJ) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"72","association_date":"08/05/2025","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"4587154711","source_pk":279156,"type_owner":"O","enrollment_id":"O20251106002829","role_code_owner":"72","role_text_owner":"ADP OF THE SNF","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"BRIGHTON OPERATOR LLC"} |
| ← owns | SK NEXGEN TR (NJ) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"35","association_date":"09/03/2025","percentage_ownership":14.2} evidence: {"rule":"D-OWNER","owner_pac":"4688079270","source_pk":279157,"type_owner":"O","enrollment_id":"O20251106002829","role_code_owner":"35","role_text_owner":"5% OR GREATER INDIRECT OWNERSHIP INTEREST","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":14.2,"enrollment_organization_name":"BRIGHTON OPERATOR LLC"} |
| ← owns | MINDEE POSEN | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"43","association_date":"09/03/2025","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"4789085465","source_pk":279159,"type_owner":"I","enrollment_id":"O20251106002829","role_code_owner":"43","role_text_owner":"OPERATIONAL/MANAGERIAL CONTROL","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"BRIGHTON OPERATOR LLC"} |
| ← owns | OWNER PAC 5092205229 | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"72","association_date":"09/29/2025","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"5092205229","source_pk":279160,"type_owner":"I","enrollment_id":"O20251106002829","role_code_owner":"72","role_text_owner":"ADP OF THE SNF","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"BRIGHTON OPERATOR LLC"} |
| ← owns | FRAIDE ROKEACH | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"86","association_date":"09/03/2025","percentage_ownership":0} evidence: {"rule":"D-OWNER","owner_pac":"5193245793","source_pk":279161,"type_owner":"I","enrollment_id":"O20251106002829","role_code_owner":"86","role_text_owner":"INDIRECT OWNERSHIP INTEREST","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":0,"enrollment_organization_name":"BRIGHTON OPERATOR LLC"} |
| ← owns | RSBRMK HOLDINGS LLC (NJ) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"35","association_date":"09/03/2025","percentage_ownership":21.8} evidence: {"rule":"D-OWNER","owner_pac":"5496146615","source_pk":279162,"type_owner":"O","enrollment_id":"O20251106002829","role_code_owner":"35","role_text_owner":"5% OR GREATER INDIRECT OWNERSHIP INTEREST","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":21.8,"enrollment_organization_name":"BRIGHTON OPERATOR LLC"} |
| ← owns | DAVID T COHEN | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"63","association_date":"09/29/2025","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"6002228624","source_pk":279164,"type_owner":"I","enrollment_id":"O20251106002829","role_code_owner":"63","role_text_owner":"MANAGING CONTROL - GOVERNING BODY","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"BRIGHTON OPERATOR LLC"} |
| ← owns | NFR 2020 IRRV TR (NJ) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"35","association_date":"09/03/2025","percentage_ownership":21.8} evidence: {"rule":"D-OWNER","owner_pac":"6305237520","source_pk":279166,"type_owner":"O","enrollment_id":"O20251106002829","role_code_owner":"35","role_text_owner":"5% OR GREATER INDIRECT OWNERSHIP INTEREST","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":21.8,"enrollment_organization_name":"BRIGHTON OPERATOR LLC"} |
| ← owns | OWNER PAC 6305336538 (NJ) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"86","association_date":"09/03/2025","percentage_ownership":1.4} evidence: {"rule":"D-OWNER","owner_pac":"6305336538","source_pk":279168,"type_owner":"O","enrollment_id":"O20251106002829","role_code_owner":"86","role_text_owner":"INDIRECT OWNERSHIP INTEREST","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":1.4,"enrollment_organization_name":"BRIGHTON OPERATOR LLC"} |
| ← owns | YK NEXGEN TR (NJ) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"35","association_date":"09/03/2025","percentage_ownership":14.2} evidence: {"rule":"D-OWNER","owner_pac":"6406251099","source_pk":279169,"type_owner":"O","enrollment_id":"O20251106002829","role_code_owner":"35","role_text_owner":"5% OR GREATER INDIRECT OWNERSHIP INTEREST","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":14.2,"enrollment_organization_name":"BRIGHTON OPERATOR LLC"} |
| ← owns | UKR NEXGEN LLC (NJ) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"35","association_date":"09/03/2025","percentage_ownership":20} evidence: {"rule":"D-OWNER","owner_pac":"7214332808","source_pk":279171,"type_owner":"O","enrollment_id":"O20251106002829","role_code_owner":"35","role_text_owner":"5% OR GREATER INDIRECT OWNERSHIP INTEREST","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":20,"enrollment_organization_name":"BRIGHTON OPERATOR LLC"} |
| ← owns | YOGESH V VIROJA | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"63","association_date":"09/03/2025","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"7911943535","source_pk":279173,"type_owner":"I","enrollment_id":"O20251106002829","role_code_owner":"63","role_text_owner":"MANAGING CONTROL - GOVERNING BODY","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"BRIGHTON OPERATOR LLC"} |
| ← owns | BRIGHTON REAL PROPERTY LLC (NJ) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"72","association_date":"09/03/2025","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"8022508258","source_pk":279175,"type_owner":"O","enrollment_id":"O20251106002829","role_code_owner":"72","role_text_owner":"ADP OF THE SNF","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"BRIGHTON OPERATOR LLC"} |
| ← owns | BRIGHTON HOLDCO LLC (NJ) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"34","association_date":"09/03/2025","percentage_ownership":100} evidence: {"rule":"D-OWNER","owner_pac":"8325537301","source_pk":279176,"type_owner":"O","enrollment_id":"O20251106002829","role_code_owner":"34","role_text_owner":"5% OR GREATER DIRECT OWNERSHIP INTEREST","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":100,"enrollment_organization_name":"BRIGHTON OPERATOR LLC"} |
| ← owns | AVIVA KAHANOW | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"86","association_date":"09/03/2025","percentage_ownership":0} evidence: {"rule":"D-OWNER","owner_pac":"8527594498","source_pk":279177,"type_owner":"I","enrollment_id":"O20251106002829","role_code_owner":"86","role_text_owner":"INDIRECT OWNERSHIP INTEREST","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":0,"enrollment_organization_name":"BRIGHTON OPERATOR LLC"} |
| ← owns | OWNER PAC 8628568854 | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"72","association_date":"09/29/2025","percentage_ownership":null} evidence: {"rule":"D-OWNER","owner_pac":"8628568854","source_pk":279178,"type_owner":"I","enrollment_id":"O20251106002829","role_code_owner":"72","role_text_owner":"ADP OF THE SNF","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":null,"enrollment_organization_name":"BRIGHTON OPERATOR LLC"} |
| ← owns | UAK 2020 IRRV TR (NJ) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"35","association_date":"09/03/2025","percentage_ownership":20} evidence: {"rule":"D-OWNER","owner_pac":"9032514625","source_pk":279179,"type_owner":"O","enrollment_id":"O20251106002829","role_code_owner":"35","role_text_owner":"5% OR GREATER INDIRECT OWNERSHIP INTEREST","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":20,"enrollment_organization_name":"BRIGHTON OPERATOR LLC"} |
| ← owns | QUINTO NEXGEN LLC (NJ) | 1.000 | snf_all_owners | evidencerecorded: 2026-06-16 methodology: entity-graph/v1 attributes: {"role_code":"35","association_date":"09/03/2025","percentage_ownership":78.6} evidence: {"rule":"D-OWNER","owner_pac":"9133524721","source_pk":279181,"type_owner":"O","enrollment_id":"O20251106002829","role_code_owner":"35","role_text_owner":"5% OR GREATER INDIRECT OWNERSHIP INTEREST","dst_resolved_via":"pecos_enrlmt_id","percentage_ownership_raw":78.6,"enrollment_organization_name":"BRIGHTON OPERATOR LLC"} |
Current record
Current claims returned for this entity, grouped by provenance subject. The table exposes the source identifier recorded for each claim.
org · 1104717255 JSON
| Metric | Value | Asserted | Source |
|---|---|---|---|
| enumeration_date | 2025-07-15 | 2026-06-10 | Centers for Medicare & Medicaid ServicesNPPES NPI Registry (individuals) 202602 publisher: Centers for Medicare & Medicaid Services retrieved: 2026-06-10 sha256: 8b5267e250fd4df6… claim API: JSON |
| legal_business_name | BRIGHTON OPERATOR LLC | 2026-06-10 | Centers for Medicare & Medicaid ServicesNPPES NPI Registry (individuals) 202602 publisher: Centers for Medicare & Medicaid Services retrieved: 2026-06-10 sha256: 8b5267e250fd4df6… claim API: JSON |
| practice_state | MA | 2026-06-10 | Centers for Medicare & Medicaid ServicesNPPES NPI Registry (individuals) 202602 publisher: Centers for Medicare & Medicaid Services retrieved: 2026-06-10 sha256: 8b5267e250fd4df6… claim API: JSON |
| primary_taxonomy | 314000000X | 2026-06-10 | Centers for Medicare & Medicaid ServicesNPPES NPI Registry (individuals) 202602 publisher: Centers for Medicare & Medicaid Services retrieved: 2026-06-10 sha256: 8b5267e250fd4df6… claim API: JSON |
Provider screening signals
NPI-keyed source families read directly for 1104717255: federal and state integrity lists, CMS Open Payments, Order and Referring eligibility, Medicare opt-out, and enrollment revalidation. Cells expose the source and provenance fields supplied by the selected record. A screening aid — re-confirm any match against the primary source before acting; absence means nothing on file in the data Fonteum currently holds, never a guarantee none exists.
Sanctions & integrity
Coverage staleExclusion coverage is stale or cannot be reconciled to an attested source artifact. This result is indeterminate and must not be treated as a clearance; check the current issuing-agency lists.
- Coverage status: indeterminate
- Screened 26 integrity lists; no negative determination was made.
14-tuple provenance (26)
Industry payments
None on file0 CMS Open Payments records on file for this NPI.
14-tuple provenance (1)
Order & referring eligibility
None on fileNo CMS Order and Referring record on file for this NPI.
14-tuple provenance (1)
Medicare opt-out
None on fileNo CMS Medicare opt-out affidavit on file for this NPI.
14-tuple provenance (1)
Revalidation
On file1 Medicare enrollment record on file.
- Due date: TBD upstream — not due within the ensuing six months.
14-tuple provenance (1)
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=…