BSPPF: Blockchain-Based Security and Privacy Preventing Framework for Data Middle Platform in the Era of IR 4.0

Table 1

Comparison among three type of blockchain.

Attribute	Blockchain types
	Public blockchain	Consortium blockchain	Private blockchain
Scope	Internet	Internet and intranet	Intranet
Permission	Public nodes	Consortium nodes	Private nodes
Speed	Slow	Medium	Fast
Decentralized	High	Partial	Partial
Cryptocurrency	Yes	No	Yes