optimistic rollup exploration bounty #2

[johannbarbie]

Bounty

• optimistic rollups have a downside of submitting all block data to chain. run some experiments and measure gas cost for current Leap data structures.

Scope

• code a basic rollup, measure gas cost for different block sizes.

Deliverables

• gas cost estimates

Gain for the project

• evaluation of rollup feasibility.

Roles

bounty gardener: @johannbarbie / 15%
bounty worker: @johannbarbie / 65%
bounty reviewer: name / 20%

[johannbarbie]

steps:

• create a version of the bridge contract that accepts block data
• measure gas costs for rolling up transaction of 154 bytes each (average size erc20 transfer, source)
• measure gas cost for rolling up transactions of 408 bytes each (size of proof in tornado.cash transactions)

measurement results:
https://docs.google.com/spreadsheets/d/1ywhXffNw3sNzngvblu4hxE6d2ZbSQ_GjN2JFfl3vYFc/edit