Logos Collective Weekly Summary

Cryptarchia & Total Stake Inference

• Areon paper submitted to NDSS 2027: substantial revision of CCS 2026 version; protocol scoped to Nakamoto-style multi-proposer PoS DAG with explicit assumptions; new simulations (multi-seed comparison, delay stress tests, robustness, design ablations) — submission, artifacts
• Cryptarchia v1 and Post-Quantum Security report updated with operational migration table
• "Modelling of random delays" doc created: proposes new model accounting for O(log N) broadcast latency

Blend Research

• Session-removal RFC: Mantle spec revision added, withdrawal-logic inconsistency identified and corrected, SDP snapshot timings clarified
• Post-Quantum Safety Analysis of the Blend Protocol: revisions incorporating review feedback (doc)

Mantle Tx simplification RFC implemented

• Transaction hash simplified: Poseidon2 removed; only blake used, with modulo to convert to Fr element where needed #2612
• Gas prices removed from Mantle Transactions #2670
• Poseidon2 instantiation clarified in specs and test values implemented #2710

Mempool

• Remove unused tx broadcast #2684

Blend engineering progress

• HTTP CLI wrapper for API; first command joins Blend as a core node #2695
• Expose Blend provider ID via /blend/info #2715
• Fix core→edge transition bug in Blend (in-review) #2722
• Remove sessions from SDP (in-review) #2692
• SDP: remove dead SessionState::update code as preparation for session→epoch replacement #2666
• SDP: don't store Blend reward parameters in recovery state — always loaded from deployment config #2676
• SDP HTTP set-declaration-id endpoint #2716
• SDP genesis validation context (in-review) #2731
• Add blend_zk_pk to known keys #2718

Decentralized sequencing

• Zone-SDK competing sequencers main logic merged #2446
• Zone-SDK reorg event simplified for decentralized sequencer first-write-wins (in-review) #2697
• Channel signature and zone-sdk updates (in-review) #2733
• Flexible bounded blocks streaming API merged (in support of sequencer PoC) #2610

Accounts

• Multiple-owners task complete: GroupKeyHolder for GMS key management #449 and wallet group commands with shared account derivation (PDA + non-PDA, sync mechanism, tests) #460 both merged
• Diversify private PDAs by identifier: integration tests and edge case coverage added (in-review) #464
• Investigated Kyber as a replacement for ECIES for key agreement in LEZ: initial findings documented
• Strong-type PrivacyPreservingCircuitInput with per-account enum merged #462
• Privacy-preserving circuit refactor: split guest into bin-dir submodules (in-review) #469

Indexer & Sequencer

• Indexer query API merged #456
• Basic UI for indexer-module testing (in-review) indexer-module-ui#2
• LEZ sequencer and indexer migrated to zone-sdk (away from bedrock client) #389

Deployment

• Genesis configurable state reimplemented to use system faucet and vaults to supply accounts (in-review) #450

Specify multi-steward and advanced group management protocol

• Multi-steward de-MLS specification complete, incorporating significant edge case treatment (spec); merge PR ready and specification deliverable considered complete with no major changes expected

• Finalise spec merge

Integrate de-MLS into Logos Chat

• Integration started; architecture reworked from one-per-user to one-per-conversation
• Integration specification drafted

• Move consensus plugin from user to conversation scope (likely requires small API changes in hashgraph-like consensus)

Integrate and dogfood capability discovery in Logos Delivery

• Logos service discovery standalone API specification published as a raw LIP
• Minor issues discovered and fixes implemented in libp2p service discovery; additional dogfooding completed; production version of integration started
• Bug fixes and PR reviews completed; testing scenarios prepared

• Continue dogfooding and production integration work
• Develop additional testing scenarios

Specify and implement extended DoS and exit node abuse protection for libp2p mix

• Addressed PR #327 review comments and refactored stake-weighted Mix RLN DoS protection spec
• Updated Logos Delivery to use stake-weighted rate limit

• Update Mix RLN Spam Protection Plugin with the spec refactor
• Add stake-weighted dogfooding setup
• Implement RLN proof encryption to hide per-hop metadata observability

Specify and implement cover traffic generation

• Addressed review comments in spec PR
• Addressed review comments in rln-plugin PR

• Analyse cover traffic implications due to stake-weighted RLN

Modify Sphinx payload encryption to preserve payload integrity

• Reviewed the new Lioness spec for mix payload integrity
• Continued analysis of Sphinx packet format

• Implement the spec once primitives are agreed upon

Mix transport experimentation

• Investigating DHT-over-Mix integration
• Ported nim-libp2p-mix-example to logos-storage/libp2p-mix-ping-example — refactored and updated
• Created logos-storage/libp2p-storage-mix-transport for experimenting with MIX transport in Nim
• Documented current MIX protocol implementation: libp2p MIX Architecture and API, Sphinx SURBs implementation, Sphinx Header Processing example (HackMD), Sphinx Header Processing infographic
• Tiny PRs on transport-over-mix as part of review process: #1, #2

• Continue on transport-over-mix; aim for a basic working transport soon

Hidden services over Mix

• Initial draft of the hidden services over Mix spec completed and under review
• Shared Sphinx Header Processing Example and infographic

• Review and help with the LIONESS Nim implementation
• Continue on hidden services over Mix: DOS/spam prevention (anonymous credentials option), client authentication, restricted discovery mode, code experiments

NAT Traversal progress

• DHT client mode landed
• NAT Traversal implementation ongoing

• Continue on NAT Traversal implementation