Solidity Page 12

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Cover image for Understanding Access Control Vulnerabilities in Smart Contracts

Mhammed Talhaouy

Oct 24 '25

Understanding Access Control Vulnerabilities in Smart Contracts

#web3 #security #solidity

2 min read

Loading Blocks

Sep 21 '25

5 Advanced Solidity Modifier Tricks

#blockchain #web3 #solidity

2 min read

Cover image for 🎲 Day 22 — Fair & Random Lottery using Chainlink VRF

Saurav Kumar

Oct 24 '25

🎲 Day 22 — Fair & Random Lottery using Chainlink VRF

#solidity #web3 #smartcontract #chainlink

8 min read

Cover image for Day 21 — Build Digital Collectibles (ERC-721 NFTs) — Full tutorial (Foundry + React)

Saurav Kumar

Oct 23 '25

Day 21 — Build Digital Collectibles (ERC-721 NFTs) — Full tutorial (Foundry + React)

#solidity #web3 #ethereum #nft

6 min read

Cover image for 🛡️ Day 19 of #30DaysOfSolidity — Signature-Based Web3 Authentication for Private Events

Saurav Kumar

Oct 19 '25

🛡️ Day 19 of #30DaysOfSolidity — Signature-Based Web3 Authentication for Private Events

#smartcontract #solidity #web3 #ethereum

4 min read

Cover image for Day 17 of #30DaysOfSolidity — Build an Upgradeable Subscription Manager for Your SaaS dApp

Saurav Kumar

Oct 17 '25

Day 17 of #30DaysOfSolidity — Build an Upgradeable Subscription Manager for Your SaaS dApp

#solidity #web3 #smartcontract #hardhat

4 min read

Cover image for 🏦 Day 14 of #30DaysOfSolidity — Building a Smart Bank with Modular Deposit Boxes (Interface + Foundry)

Saurav Kumar

Oct 14 '25

🏦 Day 14 of #30DaysOfSolidity — Building a Smart Bank with Modular Deposit Boxes (Interface + Foundry)

#solidity #smartcontract #web3 #ethereum

4 min read

Cover image for 🪙 Day 13 of #30DaysOfSolidity — Building a Token Sale (Sell Your ERC-20 for ETH with Foundry)

Saurav Kumar

Oct 13 '25

🪙 Day 13 of #30DaysOfSolidity — Building a Token Sale (Sell Your ERC-20 for ETH with Foundry)

#30daysofsolidity #solidity #foundry #blockchain

4 min read

DFK Digital Solutions

Sep 17 '25

Smart Contract Upgradeability Patterns: A Developer's Guide

#blockchain #solidity #smartcontracts #web3

4 min read

Cover image for 🪙 Day 12 of #30DaysOfSolidity — Build Your Own ERC-20 Token using Foundry

Saurav Kumar

Oct 12 '25

🪙 Day 12 of #30DaysOfSolidity — Build Your Own ERC-20 Token using Foundry

#solidity #smartcontract #ethereum #web3

4 min read

Cover image for 🏦 Day 11 of #30DaysOfSolidity — Building a Secure Vault with Ownable + VaultMaster 🔐

Saurav Kumar

Oct 11 '25

🏦 Day 11 of #30DaysOfSolidity — Building a Secure Vault with Ownable + VaultMaster 🔐

#solidity #blockchain #smartcontract #ethereum

4 min read

Cover image for My First Smart Contract Project on Sepolia

Keijzer Rozenberg

Oct 11 '25

My First Smart Contract Project on Sepolia

#webdev #web3 #solidity #programming

1 min read

Cover image for 🏋️ Day 10 of #30DaysOfSolidity — Building a Decentralized Fitness Tracker with Events & Milestones

Saurav Kumar

Oct 10 '25

🏋️ Day 10 of #30DaysOfSolidity — Building a Decentralized Fitness Tracker with Events & Milestones

#smartcontract #solidity #blockchain #ethereum

2 min read

Cover image for 🧩 Day 9 of #30DaysOfSolidity — Contract-to-Contract Interaction

Saurav Kumar

Oct 10 '25

🧩 Day 9 of #30DaysOfSolidity — Contract-to-Contract Interaction

#solidity #smartcontract #web3 #blockchain

3 min read

Cover image for 🪙 Day 6 of 30 Days of Solidity: Build a Digital Piggy Bank

Saurav Kumar

Oct 6 '25

🪙 Day 6 of 30 Days of Solidity: Build a Digital Piggy Bank

#solidity #blockchain #web3 #smartcontract

3 min read

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Forem

# solidity

Understanding Access Control Vulnerabilities in Smart Contracts

5 Advanced Solidity Modifier Tricks

🎲 Day 22 — Fair & Random Lottery using Chainlink VRF

Day 21 — Build Digital Collectibles (ERC-721 NFTs) — Full tutorial (Foundry + React)

🛡️ Day 19 of #30DaysOfSolidity — Signature-Based Web3 Authentication for Private Events

Day 17 of #30DaysOfSolidity — Build an Upgradeable Subscription Manager for Your SaaS dApp

🏦 Day 14 of #30DaysOfSolidity — Building a Smart Bank with Modular Deposit Boxes (Interface + Foundry)

🪙 Day 13 of #30DaysOfSolidity — Building a Token Sale (Sell Your ERC-20 for ETH with Foundry)

Smart Contract Upgradeability Patterns: A Developer's Guide

🪙 Day 12 of #30DaysOfSolidity — Build Your Own ERC-20 Token using Foundry

🏦 Day 11 of #30DaysOfSolidity — Building a Secure Vault with Ownable + VaultMaster 🔐

My First Smart Contract Project on Sepolia

🏋️ Day 10 of #30DaysOfSolidity — Building a Decentralized Fitness Tracker with Events & Milestones

🧩 Day 9 of #30DaysOfSolidity — Contract-to-Contract Interaction

🪙 Day 6 of 30 Days of Solidity: Build a Digital Piggy Bank