TFBO: A Trusted Framework based on Blockchain for Outsourcing Data Entry

Abstract

In China, the manual approach is still widely used in outsourcing data entry because of the poor recognition of OCR for Chinese. However, little consideration has been given to enhancing the credibility of manual data entry. In this paper, we propose TFBO (Trusted Framework Based on Blockchain for Outsourcing Data Entry). Firstly, we propose the system architecture and transaction flow of TFBO. Secondly, we propose Assign-on-chain to ensure the allocation process is traceable, which applies GODSS to generate a globally optimal of services selection and broadcasts the selection on the blockchain. Thirdly, we propose Result-on-chain uses searchable encryption to ensure the final entry result is irreversible and can be used for the deposit. Finally, we propose Check-on-chain to avoid the malicious behavior of clients or subcontractors through the smart contract about decentralized checking. The extensive credibility analysis and performance evaluation show that our solution is trusted and feasible.