Decentralized, Privacy-Preserving, Single Sign-On

Table 1

Comparison of public ledger instantiations.

Properties	Namecoin	Ethereum (Rinkeby)
Initial data size	5.08 GB	5.3 GB
Initial sync time	3 h	3 h
Cost	0.069 USD	0.022 5 USD
Confirmation time	10 min/2 h	a few seconds/3 min