2026-04-27 Logos Blockchain weekly

Logos Blockchain Weekly Update - 2026-04-27 §

blockchain:highlights §

• First stable Blend network: survived session transitions after 3 internal devnets (rc.1, rc.2, rc.3)
• Ledger fund-loss vector closed: NoteId uniqueness enforced, blocking a class of bugs where users could create notes with duplicate IDs (RFC, logos-blockchain#2579)
• Bounded leader-voucher memory growth in the node: replaced DynamicMerkleTree (linear growth) with Merkle Mountain Range (logarithmic) for voucher accumulation across wallet logos-blockchain#2586, wallet-service logos-blockchain#2587, chain logos-blockchain#2588, and ledger logos-blockchain#2585
• Cryptoeconomics technical specs published in Specifications

blockchain:bedrock:research §

• blockchain:bedrock:research:total-stake-inference

  • “Total Stake Inference under Stake Privacy: The Case of Ouroboros Crypsinous” paper refocused around chain-only baseline mechanism; CCS submission registered with new title, abstract, and track justification paper, tex
  • TSI Analysis draft: appendix expanded with additional simulations and plots draft
  • Stake-underestimation impact analysis: derived that Hamming distance between election records approaches T (slot count) as ε → 0, and that low-stake nodes’ election chances are reduced by ~1/ε vs. high-stake nodes — underestimation promotes inequality draft

• blockchain:bedrock:research:cryptarchia

  • Checkpoint-based Fast Bootstrapping RFC: StateRoot incorporated into Block Header, Block Header Validation, and Block ID (Cryptarchia Protocol Spec); Header and Construction Procedure (Block Construction Spec); new “Checkpoint-based fast bootstrapping” subsection added RFC

• blockchain:bedrock:research:blend

  • Post-Quantum Primitive Candidates for the Blend Protocol document started (WIP): comparative evaluation of post-quantum candidate algorithms (key sizes, ciphertext/signature sizes, performance) plus transition roadmap to fallback families if primary choice is broken doc

• blockchain:bedrock:research:cryptoeconomics

  • Cryptoeconomics specs legal-approved and moved to Specifications — unblocks session-removal work specs

blockchain:bedrock:eng §

• blockchain:bedrock:eng:blend

  • HTTP endpoint /blend/info exposing connected peers and health logos-blockchain#2573
  • Removed spammy old metrics and fixed concurrency issue leaving connections open after failed peer negotiation logos-blockchain#2589
  • 1-node network handling for Blend (impossible) and gossipsub (notifies sender if message fails to publish for lack of peers) logos-blockchain#2604

• blockchain:bedrock:eng:mantle

  • NoteId Uniqueness RFC merged RFC
  • Operation trait introduced for mantle Operations (each Op now exposes validate + execute); NoteId Uniqueness implementation landed logos-blockchain#2579
  • Leader claim proof validation fix (in-review) logos-blockchain#2619
  • Merkle Mountain Range integration for voucher management: replaced DynamicMerkleTree in wallet logos-blockchain#2586, wallet-service logos-blockchain#2587, and chain logos-blockchain#2588; ledger replacement in-review logos-blockchain#2585

• blockchain:bedrock:eng:mempool

  • Transaction deletion delayed so competing proposals can still be reconstructed (in-review) logos-blockchain#2576

• blockchain:bedrock:eng:decentralized-sequencing

  • Zone-SDK: preserve pending transaction order on resume logos-blockchain#2583
  • Zone-SDK competing sequencers e2e tests merged logos-blockchain#2578; main logic ready for review logos-blockchain#2446
  • Flexible blocks streaming API in support of sequencer POC (in-review) logos-blockchain#2610

• blockchain:bedrock:eng:testing

  • Testing API connect endpoint: running node can connect to peer without restart logos-blockchain#2574
  • Restart test peer override via CLI args (in-review) logos-blockchain#2603
  • E2e system monitor diagnostics (in-review) logos-blockchain#2607
  • Restore single-node coverage where applicable (in-review) logos-blockchain#2613
  • Reduce nextest concurrency for heavy e2e tests (in-review) logos-blockchain#2614
  • Update cargo hack action in CI logos-blockchain#2616
  • Remove “nomos” mentions from testing framework logos-blockchain#2593
  • Align block fetch client with API block shape logos-blockchain#2570
  • More e2e test fixes logos-blockchain#2571
  • Expand cucumber custom config command logos-blockchain#2572

• blockchain:bedrock:eng:testnet

  • 0.1.3 release candidates published: rc.1, rc.2, rc.3
  • cfgsync entropy: load from file or generate random logos-blockchain#2595; don’t set entropy in compose files logos-blockchain#2618
  • Environment string decoupling between webpages and deployment titles (playground → devnet migration) logos-blockchain#2549
  • Release-candidate process iteration: templates updated logos-blockchain#2580, post-rc.2 process logos-blockchain#2591, RC disclaimer in release notes logos-blockchain#2609, post-rc.3 update logos-blockchain#2617

• blockchain:bedrock:eng:node

  • Explicit runtime handle parameter when creating the node logos-blockchain#2605
  • Nix inner version tied to crate version (in-review) logos-blockchain#2606
  • Retry logic for block_not_found in block sync, closing node sync flakiness investigation logos-blockchain#2581, issue #2530
  • CryptarchiaParameter added to genesis block (in-review) logos-blockchain#2174
  • Genesis CLI tool for deployment configs, replacing the genesis ceremony logos-blockchain#2565
  • OTLP tracing: authorization header support, enabling metrics and logs to DST infra logos-blockchain#2596

• blockchain:bedrock:eng:circuits

  • Circuits as libraries: transforming circuits to static libraries (WIP) branch

• blockchain:bedrock:eng:explorer

  • Block Explorer Module specification published spec

blockchain:logos-execution-zone §

• blockchain:logos-execution-zone:accounts

  • Deterministic identifiers approach explored and abandoned after team discussion of trade-offs logos-execution-zone#453
  • Wallet refactor for public account changes (in-review) logos-execution-zone#452
  • Signature refactor for Keycard support: BIP-340 32-byte message constraint relaxed (in-review) logos-execution-zone#457

• blockchain:logos-execution-zone:indexer

  • Indexer query API (in-review) logos-execution-zone#456
  • Fix clock transaction validation in indexer (in-review) logos-execution-zone#458

• blockchain:logos-execution-zone:deployment

nimbos §

• Deployment config + genesis block construction (in-review) nimbos#31
• Poseidon2/Groth16 integration: nim-poseidon2-bn254 submodule vendored
• Module structure proposal for the Nim client nimbos issue #29
• Poseidon2 incompatibility between nim-poseidon2 and the Rust reference identified nimbos issue #30; Poseidon2Hasher with digests matching the Rust reference (in-review) nimbos#36

blockchain:comms §

• blockchain:comms:docs

  • New spec structure published with all specs migrated to new format; Nomos and Data Availability mentions removed (except where pending RFCs do so) specs

• blockchain:comms:blog

  • Logos Post-Quantum Security blog article (WIP) draft