# orphan work

> copyright-protected work for which rights-holders are positively indeterminate

**Wikidata**: [Q1546053](https://www.wikidata.org/wiki/Q1546053)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Orphan_work)  
**Source**: https://4ort.xyz/entity/orphan-work


## References

1. [Source](https://github.com/JohnMarkOckerbloom/ftl/blob/master/data/wikimap)
2. Freebase Data Dumps. 2013
3. Integrated Authority File
4. National Library of Israel Names and Subjects Authority File
5. Wikibase TDKIV