Identifiers.org is a project providing stable and perennial identifiers for data records used in the Life Sciences. The identifiers are provided in the...

system is to make a collection of identifiers actionable and interoperable, where that collection can include identifiers from many other controlled collections...

serve as unique identifiers are called primary keys. In mathematics, set theory uses the concept of element indices as unique identifiers. There are some...

Retrieved 2021-02-16. "Semantic Scholar Research". research.semanticscholar.org. Retrieved 2021-11-22. Fricke, Suzanne (2018-01-12). "Semantic Scholar"....

observations. Observation.org may be accessed via its website or from its mobile applications like ObsIdentify. The Observation.org database holds 233 million...

to archive the peer-reviewed postprint. Begun on August 14, 1991, arXiv.org passed the half-million-article milestone on October 3, 2008, had hit a million...

which has been identified as a safe upper limit to avoid a climate tipping point.[failed verification] By the end of 2007, the year 350.org was founded,...

Decentralized identifiers (DIDs) are a type of globally unique identifier that enables an entity to be identified in a manner that is verifiable, persistent...

the Internet Engineering Task Force (IETF) "UDI (Universal Document Identifiers) BOF" mentions URLs (as Uniform Resource Locators), URNs (originally...

fingerprints by similarity and returns the AcoustID identifier along with MusicBrainz recording identifiers, if known. Since 2003, MusicBrainz's core data...