Table 11 Blockchain types and their relevance to SIoT applications.

From: A comprehensive survey on securing the social internet of things: protocols, threat mitigation, technological integrations, tools, and performance metrics

Blockchain type

Examples

When to choose

Public

Ethereum, Polygon

Open networks where high transparency and decentralization are needed

Consortium

Hyperledger Fabric

Enterprise or research environments with multiple known stakeholders

Permissioned

Hyperledger Indy, Corda

Applications requiring strong identity management and privacy

Lightweight (IoT)

IOTA, Algorand, Nano

Ideal for low-power SIoT devices; supports DAG or fast consensus mechanisms

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