Of crucial interest to OpenAIRE is also the identification of the funders (e.g. European Commission, WellcomeTrust, FCT Portugal, NWO The Netherlands) that co-funded the projects that have led to a given result. Projects are characterized by a list of funding streams (e.g. FP7, H2020 for the EC), which identify the strands of fundings. Funding streams can be nested to form a tree of sub-funding streams.
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## The `Project` object
### id
_Type: String • Cardinality: ONE_
Main entity identifier, created according to [OpenAIRE_entity_identifier_and_PID_mapping_policy](https://support.openaire.eu/projects/docs/wiki/OpenAIRE_entity_identifier_and_PID_mapping_policy).
