WBCSD PACT
PACT defines how product carbon footprints travel between companies: a common PCF data model, a standardized exchange API, and the methodology behind the numbers. The Open Footprint Product Life Cycle domain aligns to PACT, and dVeracity exchanges PCF data through the PACT network.
WBCSD / Partnership for Carbon Transparency
ImplementedTech Specs v3.0.3PACT is the reporting edge of the hub-and-spoke architecture: activity data recorded in Open Footprint flows through calculation into E-Ledger entries, and leaves the platform as PACT-conformant PCFs. Catena-X's automotive PCF model (pcf 9.0.0) tracks PACT v3, so this one edge covers both networks.
Key Facts
What v3 Changes
Version 3 is a breaking change from v2 — conformant solutions must speak v3 since April 2026.
Immutable PCFs
BreakingA footprint is never edited in place: any change creates a new footprint with a new ID linked via precedingPfIds. Status is reduced to Active or Deprecated.
Redesigned Query API
BreakingOData $filter expressions replaced by discrete, predictable query parameters for listing and filtering footprints.
CloudEvents Async Exchange
RequestCreated, RequestFulfilled, RequestRejected, and Published events standardize asynchronous PCF exchange; sync and async must return identical data.
Methodology v3.0 Coverage
Adds land-sector emissions and removals, refined electricity accounting, carbon capture and storage/utilization, and services.
Integration Flow
Verified emissions data leaves the platform as immutable, PACT v3-conformant product carbon footprints.
Part of the Data Models family
See how every standard connects to the Open Footprint canonical core.