Build a Solana Lending Protocol Using Anchor (Devnet Demo) | Borrow & Deposit SOL | Full Guide 2025

Описание: Welcome back to 👨‍💻 GROKCHAIN LABS WITH BHUPENDRA 🚀

In today’s video, we’re building a *mini Solana Borrow / Lend DeFi protocol* using *Anchor* on *Devnet* — a real smart contract you can test without spending money.

We will:
• Initialize a global Vault PDA
• Deposit SOL as collateral
• Update user lending positions
• Run tests on Devnet
• View balance changes on the Solana Explorer
• Learn real DeFi concepts like collateral & over-collateralization

This is Part 3 of our Solana series:
📌 Part 1 — Build Your Own Solana Token (Anchor)
📌 Part 2 — Send SOL Instantly Without Wallet Popup

👉 Today’s Goal: Deposit SOL into a lending vault & verify balance on-chain 💎

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🔗 *Project Source Code*

🔗 *Commands Used In Video*
anchor build
anchor deploy --provider.cluster devnet
anchor test --skip-local-validator --provider.cluster devnet


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🎥 *Video Chapters*
00:00 Intro
01:10 What is Collateral in DeFi?
02:30 Project Structure Overview
04:10 Initialize Vault PDA
07:20 Deposit SOL as Collateral
10:50 Run Devnet Tests
13:00 Show Proof on Solana Explorer
15:00 Final Result & Concept Recap
16:00 Outro

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📚 *Tech Stack*
• Solana
• Anchor Framework
• TypeScript Tests
• Devnet
• Rust Smart Contracts

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💬 Comment below:
What DeFi feature should we build next?
• Borrow & repay loan?
• Liquidation bot?
• Token rewards?
• Frontend dashboard?
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