摘要：This work describes how open data and human computation can be brought together through blockchain to foster the collaboration of citizens on the continuous enhancement of open data portals. For that, it contributes with a set of enhancements to the widely adopted data management tool Comprehensive Knowledge Archive Network (CKAN), to allow full audit and management of the change requests posed by citizens to datasets in open data portals. User contributions’ sustainability in time is tackled by providing rewards to users through AudaCoins, a currency that rewards citizens according to their refinement contributions, thus encouraging their continuous engagement with city co-creation activities.
