# Schnorr Sequencer - Wanseob Lim, Ethereum Foundation

###### tags: `2023`, `DAY1`, `ZK`
{%hackmd @ethtaipei/ByQLufgQ2 %}

> Share your thoughts from here

commit optimistically, verify crytographycally

status quo: commit a batch of transaction
=> commit a transaction

# how
one signature user signing, sequencer give out a sig as well

# expect to achieve
1. instant state transition
2. allow application rollup which have low throughput

# Schnorr signature
random linear combination

## pro con
1. easy to aggregate
2. key cancellation possible (musig)

# Step
sequencer -> POS -> smart contract

sequencer and user both have partial sig.

sequencer get the partial signature and validate

ZK friendly: Schnorr would be better in comparison to BLS

https://ethresear.ch/t/schnorr-sequencer/15230