A² Chain: A Blockchain-Based Decentralized Authentication Scheme for 5G-Enabled IoT

Table 6

Time costs (in s) of the blockchain.

Operations	Registration	Query	Transfer
Max time (s)	2.19	0.06	2.23
Min time (s)	0.03	0.01	0.03
Avg time (s)	0.18	0.01	0.16