# Harley Hahn

> (born 1952)

**Wikidata**: [Q55945021](https://www.wikidata.org/wiki/Q55945021)  
**Source**: https://4ort.xyz/entity/harley-hahn

## Summary
Harley Hahn (born 1952) is a computer scientist recorded in multiple international library and authority databases. He is primarily documented through bibliographic and identifier records (for example ISNI 0000000108704078 and VIAF 12360007), which establish his identity in library, archival, and scholarly metadata systems.

## Biography
- Born: 1952
- Nationality: [not specified in the provided sources]
- Education: [not specified in the provided sources]
- Known for: Being documented as a computer scientist in international authority and library records
- Employer(s): [not specified in the provided sources]
- Field(s): Computer science

## Contributions
The source material does not list specific papers, products, patents, companies, or project names authored or led by Harley Hahn. What is concrete in the supplied data is his traceable presence across a wide set of bibliographic and authority systems. He is assigned ISNI 0000000108704078 and VIAF ID 12360007, and appears in national and specialist library files including the Library of Congress authority (n85068312), Bibliothèque nationale de France (122252270), National Library of Korea (KAC2018N8321), National Library of Brazil (000234873), and many others. These records, with documented reference dates (for example, authority metadata updates dated 2018-08-03, 2021-07-17, and 2024-06-13), indicate cataloging activity that connects his name to published or archival items in library collections. Consequently, the verifiable outcome present in the sources is the establishment and maintenance of authoritative identity metadata that enables consistent discovery, disambiguation, and citation of works attributed to Harley Hahn across international catalogues and scholarly systems.

## FAQs
### Q: Who is Harley Hahn?
A: Harley Hahn (born 1952) is identified in the provided sources as a computer scientist. He is primarily represented through international library and authority identifiers rather than through listed publications in the supplied material.

### Q: What has Harley Hahn published?
A: The provided source material does not list titles, papers, books, patents, or project names attributed to Harley Hahn. His presence is documented via library and authority records, which imply associated published or archival items but do not supply specific work titles.

### Q: How can I find more information about him?
A: The most direct route from the provided data is to use his authority identifiers (for example ISNI 0000000108704078 or VIAF 12360007) in library catalogues and authority services to locate cataloged works or related metadata.

## Why They Matter
Harley Hahn’s significance in the provided records derives from his wide coverage in international bibliographic and authority infrastructures. While no specific authored works are named in the supplied material, the consolidation of his identity across systems such as ISNI, VIAF, Library of Congress, and numerous national libraries matters because it enables accurate author disambiguation, reliable linking of works to the correct person, and consistent metadata propagation among libraries, archives, and discovery services. For researchers, librarians, and digital infrastructure services, these authoritative identifiers reduce ambiguity in citation, improve search precision, and support inter-catalogue exchange and aggregation. Without such authoritative entries, items attributed to people with similar names risk misattribution, fragmented bibliographic records, and reduced discoverability. Thus, the documented outcome—robust identifier and authority coverage—supports the integrity of scholarly and library ecosystems even if the provided sources do not enumerate specific intellectual outputs.

## Notable For
- Being recorded with ISNI 0000000108704078.
- Having a VIAF identifier: 12360007.
- Presence in major national and specialist library authority files, including Library of Congress (n85068312) and Bibliothèque nationale de France (122252270).
- Documented occupation as "computer scientist" in authority metadata (reference dated 2021-07-17).
- Birth year recorded as 1952 across multiple authority records.

## Body

### Basic biographical identifiers
- Given name: Harley (recorded).
- Family name: Hahn (recorded).
- Birth date: 1952 (value present in the supplied metadata).
- Sex/gender: male (as recorded in authority metadata).

### Professional classification
- Occupation: computer scientist (occupation value present; reference metadata dated 2021-07-17).
- Instance: human (instance_of value present; reference dated 2024-06-13).

### Primary authority and identifier records (selected)
- ISNI: 0000000108704078.
- VIAF ID: 12360007.
- Library of Congress Name Authority: n85068312.
- BnF (Bibliothèque nationale de France): 122252270.
- National Library of Korea: KAC2018N8321.
- National Library of Brazil: 000234873.
- Additional identifiers include: GND 124163963; FAST 156318; NDL 00467789; WorldCat entities E39PBJk8XmbHTKK3hCmhQhYtrq; and many national catalog IDs (see provided structured list).

### Cataloging and metadata timestamps
- Several authority entries carry reference update dates present in the source material, such as 2018-08-03, 2021-07-17, 2024-06-13, and 2024-06-30. These dates reflect cataloging or metadata maintenance operations in the referenced systems.

### Presence across library ecosystems
- The supplied data shows Harley Hahn is represented in a broad set of library and national authority files (e.g., national libraries of Korea, Brazil, France, Israel, Spain, Poland, Latvia, Greece, India, Australia, and Canada). This breadth indicates that catalogers have created and maintained authority records linking the name to bibliographic items or archival entries within multiple national and international collections.

### What is not present in the provided material
- The sources do not include explicit titles of authored works, publication years for specific works, employer names, educational institutions, patents, company affiliations, or detailed biographical narrative beyond identifiers and birth year.

## References

1. Integrated Authority File
2. datos.bne.es
3. Catalog of the German National Library
4. CiNii Research
5. Czech National Authority Database
6. Korean Authority File
7. MAK
8. Trove
9. Faceted Application of Subject Terminology
10. Catalogo of the National Library of India