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Achievements

Achievement: Pair ExtraordinaireAchievement: Pull Sharkx3Achievement: QuickdrawAchievement: YOLO

Achievements

Achievement: Pair ExtraordinaireAchievement: Pull Sharkx3Achievement: QuickdrawAchievement: YOLO

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hallzyx/README.md

Brayan Roberto Ccarita Cruz (hallzyx) · <arroz/>. Software Engineering student in Lima, Peru. AI Agents · Full-stack · Cloud · Web3. Portfolio: iam.arroz.dev

Portfolio: iam.arroz.dev GitHub: hallzyx

GitHub at a glance

GitHub at a glance: 113 public repositories (per GitHub API), 5 hackathon awards (per portfolio), 36 repos with TypeScript as main language out of 95 owned, latest public push Oct 16, 2026. Recent activity: Oct 16, 2026, apertus: Python project. Oct 15, 2026, detengue: Kotlin project. Oct 14, 2026, payzap: price-guarantee demo with PayPal. Oct 13, 2026, gemma-en-accion: HTML project.

100+ public repositories: hackathon projects, challenges and experiments. These are the ones that best show how I build end to end.

Featured projects

Cryptoon. Winner, ETH Global Buenos Aires 2025. Web3 webtoon reader where creators keep 100% of what they earn: chapters at 0.01 USDC and an agent that buys for you. Stack: TypeScript, React, Coinbase AgentKit, x402, Base. Alpacto. Winner, Ethereum Lima Hackathon 2026. Fair payments for alpaca fiber with on-chain escrow and an AI auditor, built for producers who never touch crypto. Stack: TypeScript, Rust, Arbitrum Stylus, ZeroDev, PostgreSQL, Docker.
Cryptoon: open the showcase on ethglobal.com Alpacto: open the live demo at alpacto.arroz.dev

LicitaVerify. 2nd place, PunaTech 2026. Citizen audit of public procurement: milestones anchored on Arkiv and a Telegram agent that answers questions in natural language. Stack: Next.js, TypeScript, Arkiv SDK, MCP, Python. ZeroSlop. Finalist and Lima chapter winner, The Next Craft 2026, team of 3. Checks that whoever opens a PR understands their own change, using a conceptual question and a hypothetical dangerous mutation. Stack: Next.js 16, TypeScript, Convex, Clerk, MCP.
LicitaVerify: open the live demo at licita-verify.arroz.dev ZeroSlop: read the case study at iam.arroz.dev/projects/zeroslop

Treasury Swap Guard. Scaffold-HBAR Template Bounty. Template for DAO treasuries on Hedera: HBAR to token swaps on SaucerSwap with limits, allowlists and contract-enforced approvals. Stack: Solidity, Next.js, Hardhat, wagmi, Hedera HCS. PayZap. Hackathon demo, Oct 2026. Shows merchants what refunds will cost them before cutting prices, and honors price guarantees via PayPal Sandbox. Stack: Next.js, TypeScript, PayPal API.
Treasury Swap Guard: read the testnet evidence (TESTNET_EVIDENCE.md) PayZap: open the README on GitHub

See all repositories →

Languages & stack

Languages across all owned repositories, by code size (forks excluded): TypeScript 43.4%, C# 19.3%, Jupyter Notebook 9.9%, Python 5.8%, JavaScript 4.1%, Other 17.4%. Tech stack used in the featured projects. AI agents: Coinbase AgentKit, MCP, x402. Full-stack: TypeScript, React, Next.js, Convex, Clerk, Python. Web3: Solidity, Rust, Arbitrum Stylus, Hardhat, wagmi, Base, Hedera. Data, infra and APIs: PostgreSQL, Docker, PayPal API.

Recent activity as text
  • Oct 16, 2026 · apertus: Python project
  • Oct 15, 2026 · detengue: Kotlin project
  • Oct 14, 2026 · payzap: price-guarantee demo with PayPal
  • Oct 13, 2026 · gemma-en-accion: HTML project

More about me and my projects at iam.arroz.dev · github.com/hallzyx
Stats refreshed automatically on Oct 18, 2026 · Languages measured over all owned repositories

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  1. cryptoon cryptoon Public

    Project winner of ETH Global 2025 Buenos aires Hackathon

    TypeScript 2