What I make of it
Both licensed and litigated over — worth noting alongside open alternatives like FIGI.
CUSIP / SEDOL
Code System
Finance
licence required
CUSIP® Global Services (CGS) is the trusted originator of quality identifiers worldwide and the industry standard as a provider of reliable, timely reference data. The CGS database serves as the backbone for Security Master Files among both vendor and user firms throughout the industry....
Other finance data models
ACTUS (Algorithmic Contract Types Unified Standards)
Information Model
BIAN Service Landscape (Banking Industry Architecture Network)
Reference Architecture
CPMI-IOSCO Critical Data Elements (UTI, UPI, CDE)
Information Model
FDX (Financial Data Exchange)
Exchange Schema
FIBO (Financial Industry Business Ontology)
Ontology / Vocabulary
FIGI (Financial Instrument Global Identifier)
Code System
FINREP / COREP (EBA reporting taxonomies)
Exchange Schema
FpML (Financial products Markup Language)
Exchange Schema
IFRS Accounting Taxonomy (International Financial Reporting Standards)
Exchange Schema
ISDA CDM (Common Domain Model)
Information Model
ISO 10383 MIC (Market Identifier Codes)
Code System
ISO 20275 Entity Legal Forms
Code System