# Shared sequencing Notes
https://www.youtube.com/watch?v=W4yp6WkPc5k
- L1 will only be verifying the ZK proof and fraud proofs
- L2 will be doing heavy stuff
- but in this the idea of ethereum which is smart contracts talking to each other is getting ruined
- so we are acheving more power but at the cost of a different dream
- L1 provides ordering, DA etc.


- having a layer 1.5 which is only involved in shared sequencing


- there is always a proposer, proposer is the leader who finalizes the ordering of the txn

- the decentralization of blockchains breaks the monopoly of the proposers
- prposer is a monopoly fro one slot becoz of extreme decentralization
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- on zk sync the independant sequencer/consensys mech might reject and optimism it might accept it
- builder will loose then their stake that they have promised to the user

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