BuidlGuidl

@buidlguidl

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https://speedrunethereum.com/

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Batch 18 is in full swing! 10 builders are actively contributing to our on-chain open-source project After just one week, we’ve already seen 18 pull requests, with 11 successfully merged. Great job! 👏 And big shoutout to our mentor @melanke! Want to join Batch 19? 👇

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https://www.youtube.com/watch?v=pVBqPX0YVV4

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Want to deploy your first dapp on Ethereum? Here is a full hands-on workshop (with cool takes on dapp building) to guide you step by step 👇 check the second cast for the full video

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BuidlGuidl CTF goes on! 12 weeks. 12 challenges. Take on Challenge 3 and see if you can handle it Ready to dive in? 👇

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https://www.youtube.com/watch?v=MtVVV7X2uuU

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Quit thinking of the same 100 onchain users! Start thinking about the mainstream audience! 👀 Taken from PMFers with Martin Koeppelmann (youtube link to the full vid in second tweet)

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https://speedrunethereum.com/

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What if you could become your own bank... on-chain? 🏦💥 Speedrun Ethereum's Challenge #5: Over-Collateralized Lending will show you how to build one step by step. Want to level up your DeFi dev skills? Check the next tweet 👇

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Batch 18 is live! 🎉 We're excited to welcome a new wave of builders into the world of on-chain open source contributions. Want to join the movement? Head over to http://speedrunethereum.com and get started!

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8/ Pro Tips - Use OpenZeppelin standard - Think in decimals() — 1 token = 10^18 units - Secure the mint() function (or remove it!) - Always test locally + on testnets - Verify your contract on Etherscan (yarn verify)

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9/ What’s Next? Now that you’ve built your own token… 🚀 Try the Token Vendor Challenge: Build a vending machine for your ERC20. https://speedrunethereum.com/challenge/token-vendor

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7/ How ERC20 Transfers Work ✅ Direct token transfer - 🔄 transfer(to, amount) ✅ Delegated transfer (like Uniswap pulling tokens) - approve(spender, amount) - transferFrom(from, to, amount)

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6/ Deployment Flow 1. Compile the contract (yarn compile or Remix) 2. Deploy it with constructor args (name, symbol, supply) 3. Get contract address 4. Add token to MetaMask 5. Interact via frontend / block explorer / CLI

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5/ Local vs Browser Dev (both great for beginners) 👨‍💻 Remix (http://remix.ethereum.org) Zero setup ⚙️ Scaffold-ETH 2 + Hardhat Full-stack dev env Great for scaling up https://scaffoldeth.io/

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4/ Writing Your Token in Solidity Use OpenZeppelin – it's secure and audited. Here’s a simple ERC20 token with optional minting:

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3/ Key Functions in ERC20 Here's what every ERC20 token must (or should) implement:

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1/ What’s an ERC20 Token? ERC20 is the most widely adopted standard for fungible tokens on Ethereum. Think stablecoins like $USDC or governance tokens like $UNI. Every ERC20 follows a shared interface so wallets, exchanges & dApps just work with it.

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2/ Why ERC20 matters 🔁 Fungible: 1 token = 1 token 🛠 Interoperable: Plug & play with MetaMask, Uniswap, Aave 🧱 Composable: Base layer for DAOs, dApps, staking, governance Common use cases: - Stablecoins - DAO tokens - Reward points - Game assets

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🧵 How to Create an ERC20 Token in Solidity Want to launch your own token on Ethereum? Here’s a complete step-by-step guide to writing and deploying an ERC20 token using Solidity + OpenZeppelin. Let’s get started 👇

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