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:

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

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

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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:

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requirements for implementing distributed ledger technology including blockchains;

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requirements for technology to ensure immutability of data sets;

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requirements for the processes of creating identifiers;

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

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requirements for the processes of creating immutable data sets.