Once phase 1 comes along and rollups move to eth2 sharded chains for their data storage, we go up to a theoretical max of ~100000 TPS.
Is there any detailed document on how to use Phase 1 for Rollup? Since Eth2 Phase 1 does not have “transactions” as in Eth2, I’m assuming that:
- a Rollup operator must run Eth2 validator(s), and
- either one of the Rollup operator’s validators must be elected as a shard block proposer and create a shard block by themselves to put the Rollup transactions on Eth2 shards.
I have some questions about this.
First, the Rollup operator needs to run many validators (i.e., stake a lot) to reduce the latency of finality in the Rollup? In the worst case, if the Rollup operator runs only one validator, and the shard committee size is 2048 (maximum in the spec), the operator has an opportunity to commit Rollup transactions once in 2048 slots (~ 6.8 hours) in expectation.
Second, if most of the Eth2 validators are not Rollup operators, we cannot make full use of the data capacity of Eth2? Since running Eth2 validator and Rollup operator are different things in terms of responsibilities and economics, I assume most of (or at least some portion of) Eth2 validators are not interested in Rollups.
Or, is there any plan to introduce (in-protocol or off-chain) “transactions” for users other than validators to put data on Eth2 shards?