ISO 24165-1:2025

Overview

ISO 24165-1:2025 specifies the method for the registration, assignment, and structure of the Digital Token Identifier (DTI), a unique identifier assigned to digital tokens that use distributed ledger technology (DLT). This International Standard is essential for the efficient and standardized identification of digital tokens, including non-fungible tokens (NFTs), improving transparency, interoperability, and data integrity in the global digital asset ecosystem. Organizations or individuals seeking to register digital tokens will benefit from clear eligibility criteria and a robust assignment process, leading to increased trust within digital finance and blockchain environments.

Key Topics

• Registration and Assignment Process

  • Defines the method for generating and assigning random, unique, fixed-length DTI codes.
  • Opens eligibility to any organization, individual, or group meeting the specified criteria.
  • Standardizes application requirements for both digital token and digital ledger identifiers (DTI/DLI).

• Eligibility Criteria

  • Digital tokens must meet definitions per the ISO 24165 series.
  • NFTs are now included, with clear policies for their group and individual assignment.
  • Currency tokens as defined by ISO 4217 are outside this scope.
  • Ledgers storing tokens are eligible for digital ledger identifiers (DLI).

• DTI and DLI Structure

  • Fixed-length, 8-character alphanumeric basic number excluding vowels, 'Y,' and with no leading zero.
  • Random, semantically meaningless identifiers checked for uniqueness.
  • Includes a check character as per ISO/IEC 7064:2003 to enhance error detection.

• Registry Management

  • Public, freely accessible, and regularly updated DTI/DLI registry.
  • Provides assigned identifiers, verified technical data, and optional descriptive information.
  • The registry includes clear notations and disclaimers regarding legal or investment status.

Applications

• Market Transparency and Efficiency

  • Facilitates clear and unambiguous referencing of digital tokens across exchanges, wallets, custodians, and regulatory authorities.
  • Enables streamlined trading, settlement, and reporting processes by providing a universally recognized identifier.

• Regulatory Compliance

  • Assists regulators and supervisory bodies in monitoring, tracking, and auditing digital tokens with greater accuracy.
  • Reduces confusion caused by similar or duplicative token names and ticker symbols.

• Ecosystem Interoperability

  • Supports cross-platform and international interoperability in digital finance, decentralized applications (dApps), and token marketplaces.
  • Helps ensure accurate mapping and data integration between systems using different token references.

• Risk Management

  • Enhances ability for custodians, service providers, and investors to manage digital asset portfolios, reduce operational risks, and improve due diligence processes.

Related Standards

• ISO 24165-2: Data elements required for registration and display on the DTI/DLI registry.
• ISO 4217: Codes for the representation of currencies - relevant for distinguishing eligible digital tokens from currency tokens.
• ISO 6166: International securities identification number (ISIN) standard for tokenized traditional assets.
• ISO 22739: Vocabulary for blockchain and distributed ledger technologies, supporting clarity in term usage.
• ISO/IEC 7064:2003: Method for calculating the DTI check character, ensuring reliable validation.

ISO 24165-1:2025 reinforces global best practices in digital token identification and contributes to safer, more robust digital asset infrastructure. For more information, refer to the registration authority details and guidelines available at iso.org/maintenance_agencies.html.