Abstract: A method (500) of processing an environmental impact associated with a product in a supply chain formed of a plurality of entities, comprising: providing (510), at an environmental impact database (310), data related to environmental impacts of one or more operations associated with one or more products; at an entity (210-2) in a supply chain, receiving (520) a product from an upstream entity (210-1) in the supply chain; logging (530) an identity of the product by means of an electronic ledger (120-2) associated with the entity; identifying (540), from the electronic ledger, by means of a data extractor (132) an identity of the product; accessing (550) an environmental impact certificate (160-1) associated with the identified product from a certificate database (320), the certificate database being mutually accessible to entities in the supply chain; determining (560) an environmental impact associated with one or more operations on the product by the entity by associating the data related to environmental im