Circular Economy is a novel economic model, where
every ‘asset’ is not wasted but reused and upscaled. The Internet
of Things-IoT paradigm can underpin the transition to a Circular
Economy by enabling fine-grained and continuous asset tracking.
However, there are issues related to security and privacy of
IoT devices that generate and handle sensitive and personal
data. The use of Blockchain technology provides an answer to
this issue, however, its application raises issues related to the
highly-constrained nature of these networks. In this paper, Edge
Computing is presented as a solution to this issue, providing
a way in which Blockchain and Edge Computing can be used
together to address the constrained nature of IoT. Furthermore,
we present the challenges that this combination poses and the
opportunities that it brings. We propose an architecture that
decreases the IoT devices requirements for memory capacity
and increases the overall performance. We also discuss the
architecture design and the challenges that it has, comparing
it to the traditional Blockchain architecture as well as an Edge
Computing architecture for Mobile Blockchain. The paper closes
with a discussion and future extensions of our work are presented,
as well