ISO 24165-1:2025
ISO 24165-1:2025 (ISO 24165) is an international standard that defines a universal identifier for digital tokens*.
The standard provides a unique code consisting of 9 alphanumeric characters, called a Digital Token Identifier (DTI). These codes are randomly assigned digital tokens which ensures consistent identification across different systems and platforms.
The standard, developed by the ISO subcommittee SC8, consists of 2 parts. ISO 24165-1 describes the method of registration and assignment of a DTI, whereas ISO 24165-2 describes the data elements required for registration and display on the DTI registry.
Read more about ISO 24165 and DTIs.
*Digital token is the Digital Token Identifier Foundation's (DTIF) choice of term for crypto assets.
Digital Tokens encompass:
- Auxiliary tokens, like WhiteBIT Coin
- Protocol tokens, Bitcoin (renamed in the 2025 update, originally referred to as native tokens*)
- Distributed ledger without a native token, like KuCoin Token
- Equivalent Group of tokens, Tether Gold (renamed in the 2025 update, originally referred to as Functionally Fungible Group*)
- Non-fungible tokens (added in 2025*)
*2025 Update to ISO 24165-1:2021
In 2025, the initial version of ISO 24165 was updated. This version has been replaced by ISO 24165-1:2025.
In the latest version, the following changes were made:
- The scope for digital token identifiers (DTIs) has been extended to include non-fungible tokens (NFTs).
- The standard now separates DTIs to identify tokens and digital ledger identifiers (DLIs) to identify ledgers (only ledgers that have one or more DTIs linked to them are in scope).
- Anchor block information has been added where the genesis block is either not known/lost.
- Functionally Fungible Group has been renamed Equivalent Group.
- Addition of Issuer and Maintainer as informative, optional fields.
- Native token has been renamed protocol token.