Nomos weekly report §

Network implementation and Mixnet: §

Research §

• Researched the Nym mixnet architecture in depth in order to design our prototype architecture. (Link: https://github.com/logos-co/nomos-node/issues/273#issuecomment-1661386628)
• Discussions about how to manage the mixnet topology. (Link: https://github.com/logos-co/nomos-node/issues/273#issuecomment-1665101243)

Development §

• Implemented a prototype for building a Sphinx packet, mixing packets at the first hop of gossipsub with 3 mixnodes (+ encryption + delay), raw TCP connections between mixnodes, and the static entire mixnode topology. (Link: https://github.com/logos-co/nomos-node/pull/288)
• Added support for libp2p in tests. (Link: https://github.com/logos-co/nomos-node/pull/287)
• Added support for libp2p in nomos node. (Link: https://github.com/logos-co/nomos-node/pull/285)

Private PoS: §

Research §

• Worked on PPoS design and addressed potential metadata leakage due to staking and rewarding.
• Focus on potential bribery attacks and privacy reasoning, but not much progress yet.
• Stopped work on Accountability mechanism and PPoS efficiency due to prioritizing bribery attacks.

Carnot: §

Research §

• Addressed two solutions for the bribery attack. Proposals pending.
• Work on accountability against attacks in Carnot including Slashing mechanism for attackers is paused at the moment.
• Modeled data decimation using a specific set of parameters and derived equations related to it.
• Proposed solutions to address bribery attacks without compromising the protocol’s scalability.

Data Availability Sampling (VID): §

Research §

• Analyzed data decimation in data availability problem. (Link: https://www.overleaf.com/read/gzqvbbmfnxyp)
• DA benchmarks and analysis for data commitments and encoding. This confirms that (for now), we are on the right path.
• Explored the idea of node sharding: https://arxiv.org/abs/1907.03331 (taken from Celestia), but discarded it because it doesn’t fit our architecture.

Testing and Node development: §

• Fixes and enhancements made to nomos-node. (Link: https://github.com/logos-co/nomos-node/pull/282) (Link: https://github.com/logos-co/nomos-node/pull/289) (Link: https://github.com/logos-co/nomos-node/pull/293) (Link: https://github.com/logos-co/nomos-node/pull/295)
• Ran simulations with 10K nodes.
• Updated integration tests in CI to use waku or libp2p network. (Link: https://github.com/logos-co/nomos-node/pull/290)
• Fix for the node throughput during simulations. (Link: https://github.com/logos-co/nomos-node/pull/295)