Blockchain-Based Cyber Threat Intelligence Sharing Using Proof-of-Quality Consensus

Table 1

System notations.

Notations	Description
	CTI feed source,
	CTI feed,
	Validator,
	Quality parameter,
	Validator selection mechanism
	Max number of validators for consensus
	Squared deviation from the mean
	Validator rating against quality parameters
	Mean rating value per quality parameter
	Validator performance
	Interim evaluation of CTI feed
	Enriched evaluation of CTI feed
	Validator performance matrix per block
	Validator reputation
	Stored CTI feed evaluation per block
	Validator reputation
	CTI feed source reputation
	Ordered list of validator performance
	Matrix of
	Aging factor
	Fading factor