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• GitHub: aurexav | hack-ink
• LinkedIn: Xavier Lau
• Nationality: China | Hong Kong

7 years of Rust development, 5 years of blockchain core development, and 1 year of AI research and application experience. Actively engaged in the Polkadot ecosystem with end-to-end expertise from protocol design, cross-chain bridge implementation, to mainnet operations. Significant influence in the open-source community with multiple widely adopted Rust libraries. Recently focused on applying AI Agents in Web3 intelligence and data systems.

• Polkadot Fellowship Member (ecosystem technical contributor)
• Polkadot Stack Exchange Moderator, Top 1–3 for 3 consecutive years: profile
• Independently developed and maintained a stable public blockchain: Darwinia
• Developed the first Ethereum↔Substrate Crosschain Bridge in the Polkadot ecosystem
• Led seamless migration from Solochain → Parachain (mainnet upgrade)
• Independently completed 3 W3F Grants: projects index
• Created the first Rust miner for Bitcoin Atomicals Protocol, achieving multi-fold efficiency gains; community GPU miner was built upon it: atomicalsir
• Rust array encoding library array-bytes: used by 9,000+ projects, 8,000,000+ downloads on crates.io
• Rust string escaping library unescaper: used by 2,000+ projects, 6,000,000+ downloads on crates.io; adopted by OpenZeppelin, Stackware, GreptimeDB, probe-rs, serialport
• AI Agentic Crypto/DeFi Intelligence System: autonomous intelligence gathering and analysis from on-chain and exchange data sources (self-developed)

• Researched and implemented AI Agent frameworks for the crypto industry, building pipelines for multi-source data collection, aggregation, and intelligence generation.
• Developed intelligent coordination mechanisms for on-chain event parsing, protocol change tracking, and risk alerts.

• Improved blockchain explorer metric systems and query performance; enhanced cross-chain and ecosystem data aggregation views.
• Established data quality validation and automated reporting processes to support analytical insights.

• Led core module and cross-chain bridge development and maintenance for Darwinia blockchain.
• Directed the migration from Solochain to Parachain, ensuring stable mainnet upgrades.
• Maintained node and on-chain operational stability, iterating consensus, network, and storage implementations.

• GitHub contributions: aurexav | hack-ink
• Polkadot Stack Exchange: Moderator / Top contributor (profile)
• Representative projects:
  • array-bytes (array encoding)
  • unescaper (string escaping)
  • atomicalsir (Bitcoin Atomicals Rust miner)
  • Other W3F grants and tools: overview

• Bitcoin Ecosystem
• Polkadot Ecosystem
• Crosschain Bridge
• Blockchain Consensus
• Staking
• Security Audit
• DevOps

• Memory injection, application reverse engineering & unpacking
• Game engine reverse engineering (data unpacking, ray tracing, Rust version)
• Embedded development (Rust version)
• Web scraping (packet capture, API reverse engineering, Rust version)
• AI image generation (Stable Diffusion, LoRA)
• AI vision (object detection, image segmentation, YOLO/ONNX/CUDA/TensorRT, Rust version)
• Computer hardware maintenance & simulation

• Bachelor of Computer Science and Technology
• English proficiency: B2–C1