According to the authors, "none of the existing blockchain initiatives in educational credentialing seems to meet their original goal of global adoption." Based on an analysis of the industry workflow, the paper (8 page PDF) "identifies six practical problems in the industry, and proposes five desired attributes of ideal credentials infrastructure." The problems are: difficulty in getting credentials recognized, damaged or tampered credentials, the cost of screening for hiring, loss of confidence in traditional credentials, identity theft, and centralized credentials governance. The attributes are: learner control, verifiability, tamper-proofing, portability, and employability-driven. The suggestion is that, properly designed, blockchain can address these issues. They offer a four-layer model for developing such a system and recommend "users involvement strategies to improve social understanding and acceptance of blockchain technology."
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