Proposing the use of blockchain to improve the solid waste management in small municipalities

The use of the “Blockchain” technological architecture is growing worldwide, given its structural characteristics aimed at security and information integrity, without the need for a central guarantor. Although Blockchain has become known for its support of crypto-coins (or crypto currencies), especially Bitcoin, its scope has become much larger, including businesses of relevant social impact. This paper presents an application of the Ethereum’s Blockchain digital architecture for the solid waste management in a small municipality in the State of São Paulo, Brazil. This application comes to replace a paper-based current system. The current system uses printed cards called Green Coins, presenting vulnerabilities that should be overcome with the implementation of the new system. The blockchain-based system provides financial management for the collection of waste in the municipality aiming at better health and socio-environmental education and the financial and social inclusion of volunteer citizens, through the use of social currency. The proposed application uses social crypto-coins and security support through Ethereum’s Blockchain, instead of the printed cards currently being used, including volunteer citizens, store owners and public agents. It should contribute in a relevant way to improving the quality of life in the municipality in relation to the typical aspects of sustainability: education, health, environment, social inclusion and local economy, contributing to achieve the Sustainable Development Goals (SDGs). The proposed application may eventually expand in to other municipalities, including major urban centers and private condominiums.