The espresso systems has open sourced their Jellyfish library, an implementation of Plonk zero-knowledge proof system that is most feature-complete, and also comes with a solidity verifier.

## Optimizing Bandersnatch's ZKP performance

Happy to announce that with my recent optimizations, Bandersnatch’s scalar multiplication circuit is reduced to 2600 constraints from 3100 constraints, resulting a 17% improvement over the Jubjub curve.

## Introducing the Falcon-r1cs

I recently worked on a rust wrapper of the reference implementation for Falcon signature scheme. Also a rank-1 constraint system (R1CS) implementation
of Falcon which shows falcon’s signature can be verified
with some 80k r1cs constraints. The main ingredient is an almost linear time NTT based multiplication
circuit that performs ring multiplications with 15k constraints.

## Introducing the Bandersnatch curve

The Bandersnatch curve
was discovered by Simon Masson from Anoma and Antonio Sanso from Ethereum Foundation.
I have implemented this curve with rust. The group operation is 40% faster than
the Jubjub curve.
See here for a short report on this curve.

## Leaving Manta

For personal reasons, I will be leaving
Manta network.
My last day at Manta will be 07/16/2021.