Superchain Compatibility via Rollup Boost

OP Stack’s op-geth orders transactions strictly by gas price.
However, SBB requires pre-confirmation of inclusion order before decryption, meaning transactions must follow a first-come, first-served (FCFS) sequence based on the encrypted arrival time.
This deterministic ordering logic is incompatible with the OP Stack’s default tx_list construction.
To avoid modifying core OP Stack core logic, we use a sidecar with Rollup Boost + a modified rBuilder.

Rollup Boost acts as a bridge between op-node and op-geth, preserving canonical interfaces.
It enables modular Builder integration (i.e., rBuilder) without altering protocol logic.
This allows us to support custom ordering and payload logic while remaining aligned with OP Stack standards.
As a result, SBB is fully compatible with Superchain governance and upgrades.

Last updated 1 month ago