Define Transaction Certificate Requirements

The UNTP Digital Conformity Credential (DCC) provides a generic mechanism for expressing third-party conformity assessments. In textile supply chains, however, a Transaction Certificate (TC) is a commonly used form of conformity evidence with transaction-specific semantics that are not explicitly modelled in the core DCC specification.

A Transaction Certificate attests that a specific quantity of certified material or product has moved between parties under defined chain-of-custody rules, often referencing upstream certificates and shipment information.

Why this is needed in the Textiles Extension

Transaction Certificates are central to how conformity and traceability operate in textile supply chains, particularly for:

• material movement and quantity accounting
• mass-balance and chain-of-custody verification
• linking upstream certifications to downstream products

Although Transaction Certificates can be implemented as profiles of the UNTP DCC, their structure introduces additional requirements (transaction context, quantities, certificate lineage) that should be explicitly defined at the extension level to ensure consistency and interoperability.

Scope of this issue

This issue proposes to:

• Define what a Transaction Certificate represents in UNTP terms
• Justify its explicit inclusion in the Textiles Extension
• Outline a basic, scheme-agnostic model for a Transaction Certificate as a specialised DCC profile

This work should:

• Build on existing UNTP core models (DCC, DIA, DFR)
• Avoid introducing new core objects
• Remain independent of any specific certification scheme at this stage

Outcome

• A clear definition of a Transaction Certificate in the Textiles Extension
• An initial, neutral data model suitable for future alignment with external standards bodies