@article{DBLP:journals/corr/abs-1804-03903,
title = {Hybrid-IoT: Hybrid Blockchain Architecture for Internet of Things 
 - PoW Sub-blockchains},
author = {Gokhan Sagirlar and Barbara Carminati and Elena Ferrari and John D Sheehan and Emanuele Ragnoli},
url = {http://arxiv.org/abs/1804.03903},
year  = {2018},
date = {2018-01-01},
journal = {CoRR},
volume = {abs/1804.03903},
abstract = {From its early days the Internet of Things (IoT) has evolved into a decentralized system of cooperating smart objects with the requirement, among others, of achieving distributed consensus. Yet, current IoT platform solutions are centralized cloud based computing infrastructures, manifesting a number of significant disadvantages, such as, among others, high cloud server maintenance costs, weakness for supporting time-critical IoT applications, security and trust issues. Enabling blockchain technology into IoT can help to achieve a proper distributed consensus based IoT system that overcomes those disadvantages. While this is an ideal match, it is still a challenging endeavor. In this paper we take a first step towards that goal by designing Hybrid-IoT, a hybrid blockchain architecture for IoT. In Hybrid-IoT, subgroups of IoT devices form PoW blockchains, referred to as PoW sub-blockchains. Then, the connection among the PoW subblockchains employs a BFT inter-connector framework, such as Polkadot or Cosmos. In this paper, we focus on the PoW sub-blockchains formation, guided by a set of guidelines based on a set of dimensions, metrics and bounds. In order to prove the validity of the approach we carry on a performance and security evaluation.},
keywords = {Blockchain; Internet of Things (IoT); architecture; distributed consensus; Proof of Work (PoW)},
pubstate = {published},
tppubtype = {article}
}

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