Dev Update
1. Last Week by the Numbers
- neptune-core
- Pull Requests: 1 opened, 2 merged
- Commits: 14 merged into master
2. Stand-up Summary
-
Alan Szepieniec
- Last Week: Worked on smart contract wallet architecture and design, evaluating how wallets process incoming announcements and handle fund deductions/credits when smart contract orders are placed and filled.
- Coming Week: Research wallet design strategies and interaction models for decentralized finance smart contracts, specifically looking into announcement handling and architectural options (such as plugin/subscriber models).
-
Thorkil Værge
- Last Week: Worked on application networking security fixes (resolving potential lock releases before sending to internal channels) and analyzed performance bottlenecks related to packed chunks in the virtual machine.
- Coming Week: Analyze the impact on block data size if chunk packing is removed, and evaluate the feasibility of packing only digests rather than full chunks to resolve virtual machine performance issues.
3. Technical Discussion
- DeFi & Smart Contract Wallet Architecture: Discussed architectural models for how wallets detect and process DeFi smart contract announcements. To maintain a clean core codebase, it was agreed that Neptune DeFi and related wallet logic will be handled within an overlay application rather than modifying the core reference implementation. Considered potential plugin and subscriber models where Neptune Core passes blocks to external plugins for scanning.
- Application Networking Security: Addressed a node concurrency vulnerability where internal channel lock releases were susceptible to blocking if a peer manipulated channel capacity. Discussed potential mitigation strategies, including releasing locks prior to internal channel dispatch and peer message throttling (with careful consideration around network sync performance impacts).
- Succinctness Performance & Chunk Packing: Evaluated VM performance bottlenecks caused by chunk unpacking overhead (~15,000 rows per input, expanding to over 1.5 million rows for 100 inputs and driving padded heights up to $2^{22}$–$2^{23}$). Deemed a mutator set schema change unfeasible due to hard fork requirements. Current evaluation paths focus on either dropping chunk packing entirely or transitioning exclusively to digest packing to keep proof constraints within practical limits.
4. Updates and Announcements
- Decision reached to maintain Neptune DeFi functionality strictly within overlay applications, keeping the core reference implementation isolated from specialized wallet logic.