Leveraging Blockchain in Monitoring SLA-Oriented Tourism Service Provisioning

A system for evaluating current services in the tourism industry is one of the sources of reference affecting tourists' decisions. However, such the system may not be trusted by users. The main reason may come from the evaluation result that has been tampered with via a third party or a network attack. Besides, the relationship between service providers and tourists is the service level agreements (SLAs), which is the provider's commitment. Nevertheless, the process of implementing the SLAs is manual, not automatic, so this leads to many disputes. In this study, we propose BlockSLA, an architecture for evaluating and enforcing agreements based on the blockchain. Our proposal uses the blockchain to ensure that the assessment process can be kept safe and reliable through the blockchain consensus processing mechanism. From these evaluations, smart contracts on the blockchain can automatically make compensation immediately and the parties (e.g., tourists, providers) can track these changes on their device. The architectural design is described in detail in this work.