scroll-tech/ceno
Nov 2025 – Mar 2026
4 Months active
Languages Used
Rust
Technical Skills
Blockchain DevelopmentCryptographyRustZero-Knowledge Proofsalgorithm designbackend development
Ray Gao
PROFILE
Ray Gao
Qing Gao developed advanced zero-knowledge proof verification features for the scroll-tech/ceno repository, focusing on recursive aggregation, batch verification, and performance optimization. Using Rust and deep knowledge of cryptography and algorithm design, Qing introduced a binary-tree-based recursive sumcheck, a DSL-coded verifier, and native sumcheck operations to improve scalability and efficiency. He enhanced zkVM verification workflows, implemented public value handling in recursive proofs, and refactored aggregation logic for better throughput. Qing also delivered batch verification support and optimized tower verification by reducing witness-loading cycles. His work demonstrated strong backend development skills and contributed robust, production-ready improvements to the zero-knowledge proof pipeline.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
6Total
Bugs
0
Commits
6
Features
4
Lines of code
15,158
Activity Months4
Your Network
117 peopleWork History
March 2026
1 Commits • 1 Features
Mar 1, 2026March 2026 focused on performance optimization for Tower Verification in the scroll-tech/ceno repository. Delivered a targeted feature that reduces initial_sum calculation cycles by replacing dot product logic with NativeSumcheck, and leveraged the additional mode to pass hint space IDs, significantly lowering witness-loading cost and improving overall verification throughput. The work included code cleanup (flattening evaluation arrays and removing unnecessary arithmetic utilities) and was implemented with cross-team collaboration.
1 Commits • 1 Features
Mar 1, 2026March 2026 focused on performance optimization for Tower Verification in the scroll-tech/ceno repository. Delivered a targeted feature that reduces initial_sum calculation cycles by replacing dot product logic with NativeSumcheck, and leveraged the additional mode to pass hint space IDs, significantly lowering witness-loading cost and improving overall verification throughput. The work included code cleanup (flattening evaluation arrays and removing unnecessary arithmetic utilities) and was implemented with cross-team collaboration.
March 2026
January 2026
1 Commits • 1 Features
Jan 1, 2026Month: 2026-01 — Scroll Tech/Ceno: Batch Verification Enhancement for Recursion Verifier What was delivered: - Implemented the Batch Verification Enhancement for the Recursion Verifier, introducing new structures and methods to handle proof inputs and verification logic, significantly improving functionality and reliability. - Debugged and completed the batch verification component (Commit: c1970fab68d4ca83aa6cea657f7ddb9ab5d59cca) to fix an existing gap and stabilize the verification workflow. Key enhancements and outcomes: - Added end-to-end batch verification support for the recursion verifier, enabling higher throughput and more robust batch processing. - Improved input handling, verification flow, and error reporting to reduce debugging cycles in downstream components. Scope and collaboration: - Co-authored by kunxian xia, aligning team on the verification model and implementation approach. Impact: - Increased reliability and scalability of the verification pipeline, enabling more efficient proof validation in production. - Reduces manual verification overhead and accelerates time-to-value for clients relying on batch verification capabilities. Technologies/skills demonstrated: - Debugging and refactoring for batch verification logic - Designing and implementing new data structures and methods for proof inputs and verification - Version control discipline and collaborative development (Git commits, co-authorship)
January 2026
1 Commits • 1 Features
Jan 1, 2026Month: 2026-01 — Scroll Tech/Ceno: Batch Verification Enhancement for Recursion Verifier What was delivered: - Implemented the Batch Verification Enhancement for the Recursion Verifier, introducing new structures and methods to handle proof inputs and verification logic, significantly improving functionality and reliability. - Debugged and completed the batch verification component (Commit: c1970fab68d4ca83aa6cea657f7ddb9ab5d59cca) to fix an existing gap and stabilize the verification workflow. Key enhancements and outcomes: - Added end-to-end batch verification support for the recursion verifier, enabling higher throughput and more robust batch processing. - Improved input handling, verification flow, and error reporting to reduce debugging cycles in downstream components. Scope and collaboration: - Co-authored by kunxian xia, aligning team on the verification model and implementation approach. Impact: - Increased reliability and scalability of the verification pipeline, enabling more efficient proof validation in production. - Reduces manual verification overhead and accelerates time-to-value for clients relying on batch verification capabilities. Technologies/skills demonstrated: - Debugging and refactoring for batch verification logic - Designing and implementing new data structures and methods for proof inputs and verification - Version control discipline and collaborative development (Git commits, co-authorship)
December 2025
3 Commits • 1 Features
Dec 1, 2025December 2025 performance-focused update for the scroll-tech/ceno repository. Delivered major enhancements to zkVM verification and GKR-based proof workflows, introduced public value handling in recursive proofs, and refactored the aggregation prover to support new public value logic. Achieved measurable efficiency gains in native sumcheck cycles and shard-level benchmarks, enabling faster verification throughput and lower compute costs for production zk workloads.
3 Commits • 1 Features
Dec 1, 2025December 2025 performance-focused update for the scroll-tech/ceno repository. Delivered major enhancements to zkVM verification and GKR-based proof workflows, introduced public value handling in recursive proofs, and refactored the aggregation prover to support new public value logic. Achieved measurable efficiency gains in native sumcheck cycles and shard-level benchmarks, enabling faster verification throughput and lower compute costs for production zk workloads.
December 2025
November 2025
1 Commits • 1 Features
Nov 1, 2025Month 2025-11: In scroll-tech/ceno, delivered a foundational enhancement to Ceno sumcheck by introducing recursive aggregation via a binary-tree structure, along with a DSL-coded verifier for recursion and a native sumcheck operation in the OpenVM environment. These changes increase verification efficiency and scalability for zero-knowledge proofs, supporting larger proofs in production. An end-to-end test harness was added to validate the recursive path. The work was anchored by the 4bd11657 commit, co-authored by sm.wu and xkx.
November 2025
1 Commits • 1 Features
Nov 1, 2025Month 2025-11: In scroll-tech/ceno, delivered a foundational enhancement to Ceno sumcheck by introducing recursive aggregation via a binary-tree structure, along with a DSL-coded verifier for recursion and a native sumcheck operation in the OpenVM environment. These changes increase verification efficiency and scalability for zero-knowledge proofs, supporting larger proofs in production. An end-to-end test harness was added to validate the recursive path. The work was anchored by the 4bd11657 commit, co-authored by sm.wu and xkx.
Activity
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Quality Metrics
Correctness86.6%
Maintainability80.0%
Architecture83.4%
Performance86.6%
AI Usage53.4%
Skills & Technologies
Programming Languages
Rust
Technical Skills
Blockchain DevelopmentCryptographyRustZero-Knowledge Proofsalgorithm designalgorithm optimizationbackend developmentcryptographyperformance optimizationperformance tuningzero-knowledge proofs
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