ISO 24165-2:2025

Overview

ISO 24165-2:2025, part of the ISO 24165 series, defines the specific data elements required for the registration of digital token identifiers (DTIs) and digital ledger identifiers (DLIs). This standard serves as an authoritative reference for the consistent assignment and documentation of digital tokens and the ledgers on which these tokens reside, ensuring a 1:1 relationship per the method outlined in ISO 24165-1. The standard is essential for organizations and stakeholders across the financial services and digital asset landscape seeking to register digital tokens in a transparent, standardized, and verifiable manner.

Key Topics

Data Element Categories

• Normative Data Elements: Technical facts that uniquely establish the connection between a digital token (or ledger) and its assigned identifier. These are validated by the registration authority.
• Informative Data Elements: Supplementary details provided by applicants that add context to records-such as names, URLs, or issuer details-but may not always be independently verified.

Classes of Information

• Validated: Verified elements accessible for independent verification.
• Privately Managed: Verified but not publicly accessible elements.
• Descriptive: Elements provided but not verified.
• Provisional/Validation Pending: Elements awaiting complete validation or submission.

Expanded Scope in 2025 Edition

• Inclusion of non-fungible tokens (NFTs) in addition to previously covered tokens.
• Distinction between DTI (for tokens) and DLI (for ledgers).
• Addition of anchor block information when genesis blocks are missing.
• Introduction of the equivalent digital token group concept and updated terminology for token types.
• Optional, informative fields for issuer and maintainer.

Mandatory Data Elements for Registration

• Type of Digital Token: Auxiliary, protocol, equivalent group, or non-fungible.
• Distributed Ledger Technology Details: Technical references, ledger identifiers, mechanisms.
• NFT-specific Information: Group indicator, implementation mechanism, and technical reference.
• Equivalent Token Grouping Details: Reasons for groupings and associated DTIs.

Informative Data Elements

• Token and Ledger Names: Including original language variants, short names, and tickers.
• Identifiers and External References: External asset or token identifiers, issuer and maintainer info, URLs.
• Public Ledger Indicator: Noting whether registry data can be independently verified.

Applications

ISO 24165-2:2025 is a vital resource for:

• Regulatory compliance: Supporting transparency for regulators and auditors regarding digital assets.
• Service providers & custodians: Efficiently managing and tracking diverse digital tokens on distributed ledgers.
• Trading platforms & exchanges: Ensuring standardized identification and differentiation of digital assets and ledgers, including NFTs.
• Financial research and reporting: Enhancing data reliability across accounting, tracking, and analytics involving digital assets.
• Developers and standards implementers: Module design for DTI/DLI registry integration, digital asset management systems, and blockchain infrastructure.

Related Standards

To ensure full compliance and seamless integration, consider the following:

• ISO 24165-1: Outlines the method for registration and assignment for DTIs and DLIs.
• ISO/IEC 10646: Universal character set for data encoding and language support.
• ISO 6166: International securities identification standards.
• ISO 4217: Currencies and currency codes, relevant for tokenized traditional instruments.
• ISO 22739: Foundational blockchain and distributed ledger technology terminology.
• ISO 17442: Legal entity identifier (LEI) standards for entity identification.

By adhering to ISO 24165-2:2025, market participants enhance the integrity, interoperability, and reliability of digital token and ledger identification across the rapidly evolving digital asset ecosystem. For further details and ongoing updates, consult the ISO maintenance agencies and your national standards body.