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Weiji Guo

A cryptography engineer. I proposed the OP_ZKP initiative back in 2023.


About Weiji

Tagline

A cryptography engineer. I proposed the OP_ZKP initiative back in 2023.

Bio

I am experienced in multiple software engineering domains: payment, cryptography engineering and blockchain, database and backend systems. I had worked in PayPal, ApplePay, American Express before. In 2023 I proposed the OP_ZKP upgrade to bring eventual Turing completeness thus more programmability to Bitcoin. I founded the Lightec Labs to push forward the proposal, and successfully launched the zkBTC project, which bridges Bitcoin to Ethereum based on ZKP as a potential application of the proposal. Now I am working on a new project which builds a Bitcoin-based chain for stable coin payment and implements the OP_ZKP proposal.

Location

Shanghai, China

Last Active

a few seconds ago

Company

Name / Logo

LIGHTEC LABS

Elevator Pitch

LIGHTEC LABS is innovating Southeast Asian and China-US cross-border e-commerce and remittance services using advanced blockchain, robust security, and competitive fees. They are focused on stablecoin payment solutions.

Industry

Technology

Team Size

1-5 employees

Funding Stage

Pre-Seed

Funding Raised

None/Bootstrapped

Annual Revenue

$0 to $100k

Skills

SkillStrengthExplanation
Software Engineering100 / 10020+ years developing backend systems, database, cryptography engineering. blockchain.
Cryptographic Engineering100 / 100I contributed BLS12-381 G2 signature verification circuit to gnark. I developed SMGo, a constant time implementation of SM4 (in assembly for amd64 and arm) and SM2.

Experiences

MILESTONELightec Labs

Title

Founder and CEO

Position Description

In this position so far, I had assembled a small engineering team, taught some of them how to do ZKP coding, led the team through the development of zkBTC, and personally developed the most critical components.

Accomplishment Notes

1) zkBTC went live July 2025, bridging Bitcoin and Ethereum using Zero-Knowledge Proof technology. No security incidents so far. 2) My PR (BLS12-381 G2 signature verification circuit) to gnark was merged Sept 2025, along with some other PRs from my team merged earlier. 3) I developed chainark, a ZKP library to prove a chain of relationship with unlimited length.

MILESTONEbilibili

Title

Technical Expert

Position Description

During the NFT fever, bilibili (Nasdaq: BILI) delved into blockchain business. They need a cryptography expert so I joined the team.

Accomplishment Notes

1) Led the team to develop a MPC+TEE-based team asset management platform. 2) Developed SMGo, a highly performant and secure implementation of Chinese cryptography algorithms.

JOBApple

Title

Senior Software Engieneer

Position Description

The ApplePay project.

Accomplishment Notes

server engineering

JOBAmerican Express (China)

Title

Director of Innovative Technology

Position Description

Research into potential application of advanced/innovative technology in AE's business: MPC, TEE, FHE, federated learning, etc.

Accomplishment Notes

JOBApple

Title

Senior Software Engieneer

Position Description

The ApplePay project.

Accomplishment Notes

server engineering

JOBPayPal

Title

Staff Software Engineer

Position Description

software engineering in the risk platform

Accomplishment Notes