ISO; ANNA registration authority
International Securities Identification Number
ISO-6166
- Authority
- D, Accredited technical standardNormative within the issuing process
- Maturity
- M1, Published and stableCurrent normative or released artifact; still requires implementation due diligence
- Version
- ISO 6166:2021
- Jurisdiction
- Global
One of twelve records open without an account, chosen to span every class of authority so the classification can be judged before anybody signs in.
What it does
Identifies a financial or referential instrument
Implementation
Registration authority data service
What it does not do
An ISIN is not a smart-contract address; one instrument can have multiple token implementations and DTIs
This is the field that matters. Most failures here are a standard asked to carry something it was never written for, and the resulting gap is discovered in production.
Where it applies
Layers, the questions it helps answer
- L1
Product taxonomy and identifiers
What is the instrument, token, party, venue, transaction and network?
Phases, when in the life of an instrument
- P0
Design time
legal classification, authority-of-record map, product archetype, standards shortlist
- P2
Issuance and deployment
identifiers, contracts, roles, registries, modules, documents and configuration manifest
- P5
Lifecycle servicing
calculations, corporate actions, payments, queues, elections and reconciliation
- P7
Change, migration and exit
revocation, correction, upgrade, identifier continuity, migration, retirement and data export
identifierinstrument
How it composes with others
Direction matters and is preserved. A conflict is not a warning about quality; it means the two cannot both hold without an adapter or a design change.
Orthogonal to, a different layer Digital Token IdentifierISO-24165
ISIN identifies the instrument; DTI identifies the digital token implementation.
Required by Classification of Financial InstrumentsISO-10962
CFI classification commonly accompanies but does not replace instrument identity.
Source and terms of use
- Primary source
- https://anna-web.org/identifiers/
- Licence and access
- Lookup and redistribution terms apply; do not scrape ANNA data
- Last verified
- 2026-08-15, primary source verified
The Institute links to and describes primary sources; it does not reproduce their normative text. Several of these documents are copyrighted and cannot be redistributed, and the licence note above is the record’s own statement of its terms, not a grant. Status is reported as observed at 2026-08-15 in catalogue release 1.0.0 and must be revalidated before use. Nothing here is legal, regulatory, accounting, tax, investment, security-audit or production-readiness advice, and neither a published status nor an open implementation is a regulatory approval or a certification.