This is the final update for the "Reducing trust in the PBS relay" project by echno.
The project aimed to reduce the required trust assumptions in the PBS relay either by proposing a new approach or adopting an existing one
Status report
The goal of the project was defined as follows:
The goal is to have developed a solution and specification, with the fewest possible drawbacks, that to some degree reduces the trust of the relay. Additionally, it would be nice to have a prototype implementation of this specification.
The approach we created is called the Rollup-Relay, which is a PBS solution that utilizes a rollup as the intermediary between the builder and the proposer. Additionally, we described how this approach could be further abstracted to utilize other intermediaries, such as a modified MEV-Boost-Relay or a Data Availability Layer (DA). We also extended the approach with an additional Data Availability Layer to reduce trust assumptions even further.