This document specifies requirements for using identifiers in distributed ledgers including blockchains. These requirements supplement those of ISO？8000-115.

The following are within the scope of this document:

—？requirements for each identifier in distributed ledgers including blockchains, where the ledger enables supply chains to exchange transaction data;

—？requirements for the off？ledger data set that is referenced by an identifier in a distributed ledger;

—？off-ledger data sets that consist only of property-value tuples, where each tuple is the result of semantic encoding.

The following are outside the scope of this document:

—？requirements for implementing distributed ledger technology including blockchains;

—？requirements for technology to ensure immutability of data sets;

—？requirements for the processes of creating identifiers;

—？requirements for the processes of creating the content of off？ledger data sets;

—？requirements for the processes of creating immutable data sets.