  Humanitarian Engineers need innovative methods to make technological
interventions for solving societal problems. The emerging blockchain technology
has the enormous potential to provide effective interventions in various
developmental sectors, including Agriculture, Education, Health, and
Transportation. In these sectors, mediators have been considered as one of the
impediments for developmental work. Blockchain technology facilitates
peer-to-peer business transactions, thus eliminating the role of mediators.
Hence, the blockchain technology is emerging as an alternative to conventional
mediator-centred solutions adopting client-server based Internet technologies.
A combination of blockchain technology with other technologies can be used to
address domain-specific challenges. For example, the combination of blockchain
technology and Internet-of-Thing (IoT) has the potential to monitor the usage
of scarce resources such as the level of ground-water and amount of energy
consumption. The aims of this chapter are twofold. Firstly, it describes the
primary building blocks of blockchain technology. Secondly, it illustrates
various use-case scenarios of blockchain technology in the fields of
Agriculture, Energy Health and others.
