roadmap/content/nomos/milestones/coordination-layer.md

title	tags
Coordination Layer	nomos-milestone roadmap-2024

Core Tasks

• Define data model (ie UTXO + partial transactions)
• Select proving system. This could potentially become a very large project, requiring tooling and compiler development. But we should try by all means using a ZK system with a compiler readily available.
• Provide the necessary tools for a ZK engineer to develop the 3 proofs and experimental Zone bridges.

Action Plan

The stages of research and development for the CL are as follow:

1. Phase 1: Design CL data model. We need a simple, expressive transaction system that supports synchronous composability. The output from this phase will be a CL specification focused on supporting one key feature: private atomic asset transfers between zones.
2. Phase 2: Choose ZK system. The single most important task of the research team in this work-stream is to make the fundamental choices that will allow us to build the foundation as fast as possible for a usable CL. This has to be done carefully and considering the specific use case of ZK in the CL, with the requirements that we have.
3. Phase 3: Build the minimal system for protocol dependencies. After this, we need to put a minimal system in place, so that the 3 proofs of the protocol can be built. This is a big blocker for the network privacy and PPoS protocols, so it needs to be the primary implementation objective.
4. Phase 4 (partially in 2024): Develop the CL tooling and integration to unlock more complex engineering feats. This will be a larger task, and not assumed to be finished by 2024. These include:
   1. Zone bridges
   2. Synchronous composability
   3. Aggregation/Solving layer