Note: you can read a slightly edited version at https://yannickseurin.github.io/crypto-book/zk-hack-puzzles/puzzle-14/puzzle-14.html
Bob designed a new one time scheme, that's based on the tried and true method
Note: you can read a slightly edited version at https://yannickseurin.github.io/crypto-book/zk-hack-puzzles/puzzle-13/puzzle-13.html
Bob has been designing a new optimized signature scheme for his L1 based on BLS
Note: you can read a slightly edited version at https://yannickseurin.github.io/crypto-book/zk-hack-puzzles/puzzle-12/intro.html
Bob was deeply inspired by the Zcash design [1] for private transactions