The velvet path to superlight blockchain clients
Aggelos Kiayias, Andrianna Polydouri, Dionysis Zindros · 2021
Superlight blockchain clients learn facts about the blockchain state while requiring merely polylogarithmic communication in the total number of blocks. For proof-of-work blockchains, two known constructions exist: Superblock and FlyClient. Unfortunately, none of them can be easily deployed to existing blockchains, as they require consensus changes and at least a soft fork to implement.