Chunk 6.0

In this chunk, the assistant systematically implemented Phase 1 of the cuzk proving engine, expanding it from a PoRep-only daemon to support all four Filecoin proof types (WinningPoSt, WindowPoSt, SnapDeals) with priority scheduling and multi-GPU capability. After reviewing the project plan and impact assessment, the assistant thoroughly explored the codebase—reading every source file in the cuzk workspace, examining the filecoin-proofs-api signatures, and studying Curio's Go FFI layer to understand vanilla proof serialization formats. This research revealed critical details: PoSt proofs require multiple vanilla proofs per request (one per sector), SnapDeals needs three commitment CIDs, and the `registered_proof` numeric values map through a `#[repr(i32)]` C FFI enum. The implementation touched four crates: the protobuf definition gained `repeated bytes vanilla_proofs` for multi-proof support; `types.rs` added the `vanilla_proofs` field and renamed SnapDeals fields to match the API; `prover.rs` was rewritten with real implementations for `generate_winning_post_with_vanilla`, `generate_single_window_post_with_vanilla`, and `generate_empty_sector_update_proof_with_vanilla`; and the scheduler and engine were updated for priority-based dispatching with GPU affinity tracking. The assistant also added proper error handling for unsupported proof types and maintained the existing PoRep C2 functionality. The chunk concludes with the assistant verifying that all changes compile successfully, marking Phase 1 as complete with the engine now capable of handling all four proof types across multiple GPUs with priority awareness.

From Research to Reality: How Phase 1 of the cuzk Proving Engine Was Built 3372 words

Message Articles

• The Architecture of a Proving Engine: Synthesizing Knowledge Across 18 Weeks of SNARK Pipeline Design
  msg 283 · 3128 words
• The Pivot Point: How a Three-Word Instruction Unleashed Phase 1 of the cuzk Proving Engine
  msg 284 · 14806 words
• The Pivot from Planning to Execution: A Detailed Analysis of the Phase 1 Kickoff Message
  msg 285 · 1968 words
• The Foundation of Phase 1: Systematic Codebase Reconnaissance
  msg 286 · 2335 words
• The Critical Research Layer: How a Single Task Message Unlocked Phase 1 of the cuzk Proving Engine
  msg 287 · 1827 words
• The Critical Bridge: How One Research Message Unlocked Filecoin Proof Serialization for the cuzk Proving Engine
  msg 288 · 1658 words
• The Pivot Point: How a Single "Complete Picture" Message Transformed Research into Implementation
  msg 289 · 1699 words
• The Critical Transition: From Single to Repeated Vanilla Proofs
  msg 290 · 1916 words
• The Architecture of a Plan: How Research Becomes Implementation in the cuzk Proving Engine
  msg 291 · 1854 words
• The First Cut: How a Single Protobuf Edit Anchored Phase 1 of the cuzk Proving Engine
  msg 292 · 1432 words
• The Pivot Point: Updating Type Definitions to Unlock Multi-Proof Support in cuzk
  msg 293 · 2259 words
• The Data Model Bridge: How a Single Edit to `types.rs` Enabled Multi-Proof Support in cuzk
  msg 294 · 1819 words
• The Todo as Thinking Tool: How a Status Update Reveals the Architecture of Systematic Engineering
  msg 295 · 1620 words
• The Research-Driven Approach: Mapping the Filecoin Proofs API Surface for Phase 1 Integration
  msg 296 · 2038 words
• The Moment of Discovery: Uncovering EmptySectorUpdateProof in the cuzk Proving Engine
  msg 297 · 1562 words
• The Anatomy of a Discovery: Uncovering `EmptySectorUpdateProof` in the cuzk Proving Engine
  msg 298 · 1811 words
• The Power of a Single Grep: How One Search Query Shaped the cuzk Proving Engine's Phase 1
  msg 299 · 1190 words
• The Type That Wasn't There: Tracing Re-export Boundaries in the cuzk Proving Engine
  msg 300 · 2046 words
• Reading the SnapDeals API: The Final Piece of Phase 1 Research
  msg 301 · 1996 words
• The Critical Verification: How One Read Message Unlocked Filecoin's SnapDeals Proof Integration
  msg 302 · 1692 words
• The Import That Wasn't There: Tracing a Type Resolution Problem in the cuzk Proving Engine
  msg 303 · 1530 words
• The Anatomy of a Discovery: How a Single Grep Confirmed the SnapDeals Serialization Path
  msg 304 · 1509 words
• The Anatomy of a Failed Grep: Tracing Type Imports in a Complex Rust Crate Ecosystem
  msg 305 · 1606 words
• The Critical Grep: Tracing Type Re-exports in a Filecoin Proving Engine
  msg 306 · 1147 words
• The Art of the Pragmatic Import: A Decision Point in Building the cuzk Proving Engine
  msg 307 · 1415 words
• The Pivot Point: How One Enum Mapping Question Shaped Phase 1 of the cuzk Proving Engine
  msg 308 · 1763 words
• The Critical Enum: A 0.3-Second Grep That Validated an Entire Cross-Language FFI Boundary
  msg 309 · 1629 words
• The Art of the Targeted Probe: Uncovering Enum Mappings in a Cross-Language Proving System
  msg 310 · 1739 words
• The Art of the Direct Read: Resolving Enum Mappings in the cuzk Proving Engine
  msg 311 · 1406 words
• The Missing Header: Tracing Enum Values Across Four Language Boundaries
  msg 312 · 1528 words
• The Rosetta Stone of Proof Types: Tracing Enum Values Across Three Language Boundaries
  msg 313 · 1580 words
• The Critical Enum Mapping: How One File Read Unlocked Phase 1 of the cuzk Proving Engine
  msg 314 · 1918 words
• The Enum Mapping That Almost Broke the Proving Engine
  msg 315 · 1708 words
• The Discriminant Detective: Tracing Enum Values Across the Go–Rust FFI Boundary in cuzk
  msg 316 · 1874 words

Subagent Sessions

• Systematic Codebase Exploration: Mapping the cuzk Proving Engine's Architecture
  subagent · 2533 words
• The Architecture of Understanding: A Deep-Dive into Filecoin's SUPRASEAL_C2 Groth16 Proof Generation Pipeline
  subagent · 2158 words
• Mapping the FFI Boundary: How Curio Serializes Vanilla Proofs for Distributed Proving
  subagent · 2781 words
• The Anatomy of a 200 GiB Proof: Dissecting Filecoin's SUPRASEAL_C2 Groth16 Pipeline
  subagent · 1982 words