# Kevin Jones I Beginner's Track, Lending & Stablecoins I ETHGlobal Prague 2025

- Speakers: Kevin Jones
- Channel: [ETHGlobal](https://streameth.org/ethglobal)
- Date: 2025-10-09
- Duration: 25:57
- Topics: Ethereum, DeFi, stablecoins, lending, overcollateralization, DAI, Scaffold-ETH, Speedrun Ethereum, smart contracts, algorithmic stablecoins, fiat-backed, oracle, price feed, liquidation, borrow rate, savings rate, collateral ratio, peg stability, MakerDAO, The Graph, ERC20, minting, burning, monetary policy, simulation bots, TypeScript, Foundry, Hardhat, decentralized finance, liquidity, governance, hackathon
- Watch: https://streameth.org/watch/yt-pTylPBfgxZ4
- YouTube: https://www.youtube.com/watch?v=pTylPBfgxZ4

## Description

Kevin Jones from The Graph and Build Guild dives into overcollateralized lending and stablecoins in this ETHGlobal Prague 2025 workshop. Learn how decentralized stablecoins like DAI work, explore key DeFi mechanisms (oracles, collateralization ratios, liquidation), and see a live demo of a simulated stablecoin system using Scaffold-ETH.

Discover how to adjust borrow/savings rates to maintain peg stability and get a sneak peek at Speedrun Ethereum’s upcoming lending challenge. Perfect for developers interested in DeFi, smart contracts, and algorithmic monetary policy.

00:00 - Introduction to Stablecoins & Lending Challenge
00:37 - Scaffold-ETH Recap for Beginners
01:34 - Types of Stablecoins: Fiat-Backed vs Algorithmic
02:36 - Overcollateralization Explained
03:40 - Oracles, DEXs & Stablecoin Engine Contracts
05:08 - Stablecoin ERC20 Modifications (Mint/Burn Controls)
07:08 - Economics of Overcollateralized Stablecoins
08:44 - Scaffold-ETH Setup: Chain, Frontend & Deployment
10:06 - Live Demo: Depositing ETH & Minting Stablecoins
12:10 - Adjusting Collateralization Ratios
13:54 - Simulating Market Activity with Bots
15:35 - Manipulating Borrow Rates for Peg Stability
17:28 - Savings Rates & Incentivizing Holders
19:29 - Liquidation Mechanics in Action
21:40 - PEG Stability Modules (MakerDAO Comparison)
22:49 - Q&A: Oracle Integration & Hackathon Ideas

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🇨🇿 *ETHGlobal Prague*
This workshop is specifically for ETHGlobal Prague, a 3-day hackathon held May 30 - June 1 2025, bringing together the most skilled web3 developers, designers and product builders from all around the globe for a weekend-long adventure to advance the Ethereum ecosystem! Watch the full ETHGlobal Prague 2025 playlist here: https://youtube.com/playlist?list=PLXzKMXK2aHh5Vv-ZobDU2YMWekDFYvOqd&si=SoQ5O2TOAK8RkYf-

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✅ Follow Kevin Jones
X: https://x.com/cryptomastery_

✅ Follow Buidl Guidl
Website: https://buidlguidl.com

✅ *Follow ETHGlobal*
X: https://x.com/ETHGlobal​
Warpcast: https://warpcast.com/ethglobal
Website: https://ethglobal.com
YouTube: https://www.youtube.com/c/ETHGlobal 

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_Are you interested in Ethereum development and entrepreneurship?_
👉 Sign up for the next ETHGlobal event: https://ethglobal.com/events
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