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⚡ Turbin3 Accelerate Builders – Q4 2025 Cohort

Welcome to my Proof of Work repository for the Turbin3 Accelerate Builders Program.
This repo chronicles my weekly progress through hands-on Solana development challenges — from SPL Token extensions and on-chain hooks to high-performance testing and advanced protocol design.

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🧭 Repository Overview

Q4_2025_Accel_Abduovv/
├── week_1/  // Week 1: SPL Token 2022 + LiteSVM
│ ├── whitelist-transfer-hook/ // Whitelist-based Transfer Hook
│ └── escrow-litesvm/ // Escrow with time-lock & LiteSVM tests
└── README.md

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🧩 Week 1 — Token Extensions & LiteSVM

Theme: Exploring SPL Token-2022 extensions and building ultra-fast test environments with LiteSVM.
This week’s focus was on designing modular, composable Solana programs with practical security patterns.

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🧱 Project 1: Whitelist Transfer Hook

A SPL Token-2022 Transfer Hook enforcing whitelist-based transfer permissions.
Each user has a dedicated PDA whitelist account, ensuring scalable and rent-optimized access control.

🔧 Key Work Completed

• ✅ Replaced array-based whitelist with per-user PDA ([b"whitelist", user]) — scalable and reallocation-free
• ✅ Programmatically initialized the mint with the Transfer Hook on-chain, eliminating client-side dependency

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🔐 Project 2: Escrow (LiteSVM)

A trustless token escrow for atomic swaps between two parties, secured by time-lock logic and tested with LiteSVM for 10× faster feedback cycles.

🔧 Key Work Completed

• ✅ Added full test coverage for take and refund instructions
• ✅ Integrated time-lock protection using Clock::get()?.unix_timestamp, with strict unlock logic and unit tests

💡 Core Features

• Three main flows: make, take, refund
• Vault PDA for secure token custody
• Time-locked trades using Unix timestamps
• Deterministic LiteSVM testing (fast, local, reproducible)

🧪 Test Cases

• test_make → Initializes escrow and validates state
• test_take → Executes valid swap
• test_refund → Returns tokens to maker

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🔜 Week 2 — Ephemeral Rollups, RPCs & Indexing

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🔜 Week 3 — Project “Pinocchio”

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🔜 Week 4 — MPL + Codama + Group