Blockchain as IoT Economy Enabler: A Review of Architectural Aspects

In the IoT-based economy, a large number of subjects (companies, public bodies, or private citizens) are willing to buy data services offered by that provide, operate, host IoT devices. To support economic transactions in this setting, and pave way for implementation decentralized algorithmic governance powered smart contracts, adoption blockchain has been proposed both scientific literature actual projects. The technology promises payment system independent (and possibly cheaper than) conventional electronic systems. However, there aspects need be considered an effective IoT–blockchain integration. review paper, we start from real projects applications (may) take advantage transactions. We provide reasoned several architectural choices light typical requirements those discuss their impact on transaction throughput, latency, costs, limits ecosystem growth, so on. also survey additional financial tools can potentially bring ecosystem, with impact. end, observe very few examples fully exploit potential blockchain. conclude discussion open problems future research directions make easier more supporting economy.