As much as 90% of “cradle-to-gate” emissions originate in the supply chain, but upstream transparency is limited. Calculating product carbon footprints (PCF) with existing tools requires great effort, starting with gathering trustworthy and accurate data across supply chain partners. Estainium is an open and non-profit association that precisely aims to resolve that challenge. Its mission is to drive industrial decarbonization holistically in a precompetitive, cross-industrial and cross-functional ecosystem that includes academia, small and medium-sized enterprises and large corporations alike. It builds on the technology of decentralized trust to avoid high cost, maintain data sovereignty and enable quick expansion with trustworthy information that can be shared along the supply chain with verifiable credentials. The association selects a base infrastructure and operating model and develops necessary extensions for using the infrastructure for PCF and broader environmental, social and governance data sharing. It also aims to achieve interoperability between different PCF standards and reporting schemes and to develop a digital approach to connect carbon sink providers with manufacturers. Certifiers are included in the ecosystem as trust anchors to make PCF verifiable. The association’s work is initially performed in three working groups that address the most pressing challenges: 1) Technology and Infrastructure; 2) Standards and Norms Compatibility; and 3) Carbon Capture, Use, Storage and Compensation. That unique constellation enables Estainium to develop practical solutions to overcome current and future challenges, for all stakeholders.