During the twenty century, several projects faced the challenge of adapting the curriculum to individual differences. Solutions based on digital reusable learning objects (LO) found difficulties because of the compromise between liability and flexibility in the distributed assessment. Blockchain offers safety and liability to certifications. This chapter describes a model of Adaptive Learning with the support of Blockchain, implemented at an experimental level at the University of Barcelona.The students build their learning paths by engaging in the different LO and the assessment results are certified with Blockchain. The development of this personalized learning path uses the Design Research model. During 2018-19 and 2019-2020, the design was applied in four groups at the University of Barcelona and it used the Ethereum platform for blockchain support. The adaptive distributed learning model was partially implemented with the collabo-ration of teachers from other institutions. The participants included 134 (2018-2019) and 132 (2019-2020) students.It stands out the blockchain implementation design based on a two-steps process to avoid delays in the interaction with teachers. The students used the opportunities of the system to a reduced level of queries. Two useful developments were ‘Edublocs Grade Book’ (EGB) and ‘Technology-Enhanced Assessment’ (TEA), the first an online interface with Ethereum while the second a synchronized off-line software that facili-tated the work of teachers.

https://doi.org/10.14195/978-989-26-2134-0