Data Sources
POSI aggregates metadata from multiple open scholarly infrastructure providers. Source identifiers and provenance are preserved wherever available. Third-party metadata remains attributed to its original source.
23,827
Journal Records
18,708,634
DOI Records
23,792
DOAJ-listed Records
2026-08-17
Last Sync
Source Status Overview
| Source | Type | Primary Use | Status | Last Sync |
|---|---|---|---|---|
| POSI Core | Internal | Journal records, PQF assessments, policy evidence | Primary | 2026-08-17 |
| DOAJ | External OA | Journal verification, OA status, license data | Integrated | 2026-08-17 |
| Crossref | External | DOI records, article metadata, reference lists | Live | Real-time |
| OpenAlex | External | Citation visibility, source matching, author IDs | Live | Real-time |
| OAI-PMH | Harvest | Discontinued — replaced by Crossref + OpenAlex | Discontinued | — |
| ROR | External | Institution identifier resolution | Integrated | Periodic |
| ORCID | External | Author identifier linking | Integrated | Real-time |
| OpenCitations | External | Open citation links and cited-by counts | Live | Real-time |
| Zenodo | External | Related datasets/software linked to POSI articles | Live | Real-time |
Open Data Principle
POSI only aggregates data from openly licensed sources. All data displayed on this platform is attributed to its original source. No proprietary or paywalled data is used. Where data is sourced from multiple providers, conflicts are flagged and provenance is shown.
POSI Core
Primary editorial and journal-level metadata from Panorama Scholarly Group journals
Update Frequency
Manual (editorial cycle)
License / Terms
CC BY 4.0
Crossref
DOI registration, article-level metadata, reference lists, and publisher verification
Update Frequency
Real-time (API)
License / Terms
CC0 1.0
OpenAlex
Open scholarly knowledge graph for citation visibility, author disambiguation, and institution records
Update Frequency
Real-time (API)
License / Terms
CC0 1.0
OpenCitations
Open citation dataset providing attributed citation links between scholarly works
Update Frequency
Real-time (API)
License / Terms
CC0 1.0
DOAJ
Directory of Open Access Journals for OA verification, license data, and journal indexing status
Update Frequency
Periodic (API)
License / Terms
CC BY-SA
OAI-PMH
Formerly used for per-journal article harvesting from OJS platforms; discontinued in favor of Crossref (DOI registry) and OpenAlex, which proved more reliable at build time
Update Frequency
Discontinued
License / Terms
Varies per journal
ROR
Research Organization Registry for institutional identifier resolution and affiliation disambiguation
Update Frequency
Periodic (API)
License / Terms
CC0 1.0
ORCID
Open Researcher and Contributor ID for author disambiguation and profile linking
Update Frequency
Real-time (API)
License / Terms
CC0 1.0
Zenodo
Open research repository used to surface datasets/software explicitly linked to a POSI article via related-identifier metadata
Update Frequency
Real-time (API)
License / Terms
Varies per deposit
Data Provenance Disclaimer
POSI preserves source identifiers and provenance information whenever available. Third-party metadata remains attributed to its original source. POSI does not claim ownership of external data and is not responsible for errors in third-party records. If you identify a data quality issue, contact the respective data provider.