--- title: "Zacheus Oluwasegun (@zarcc) | Hashnode" description: "Zacheus Oluwasegun (@zarcc) writes on Hashnode. Read their latest articles and follow their work." url: "https://hashnode.com/@zarcc" --- @zarcc # Zacheus Oluwasegun @zarcc · Joined July 2025 ### [Guide to Solidity Smart Contract Security: Preventing Common Mistakes and Critical Exploits](https://zarcc.hashnode.dev/guide-to-solidity-smart-contract-security?utm_source=hashnode&utm_medium=feed) Learn how to protect your Solidity smart contracts from common security mistakes and critical exploits. This comprehensive guide teaches and profer solution 7 min read · [zarcc.hashnode.dev](https://zarcc.hashnode.dev/guide-to-solidity-smart-contract-security?utm_source=hashnode&utm_medium=feed) [Sep 29, 2025](https://hashnode.com/posts/guide-to-solidity-smart-contract-security/68da7e237ac098015dbad279) ### [Mastering Multi-Signature Wallets: A Beginner's Guide to Building Secure Smart Contracts](https://zarcc.hashnode.dev/mastering-multi-signature-wallets?utm_source=hashnode&utm_medium=feed) Explore multisig wallets for enhanced blockchain security. How they work and follow our beginner-friendly guide to code your first multisig smart contracts. 8 min read · [zarcc.hashnode.dev](https://zarcc.hashnode.dev/mastering-multi-signature-wallets?utm_source=hashnode&utm_medium=feed) [Aug 27, 2025](https://hashnode.com/posts/mastering-multi-signature-wallets/68aec69275d17101197308ee) ### [dApps and Smart Contract ABIs: A Frontend Developer's Guide](https://zarcc.hashnode.dev/dapps-and-smart-contract-abis?utm_source=hashnode&utm_medium=feed) Discover how Application Binary Interfaces (ABIs) connect your frontend to smart contracts, enabling seamless decentralized app (dApp) development. 3 min read · [zarcc.hashnode.dev](https://zarcc.hashnode.dev/dapps-and-smart-contract-abis?utm_source=hashnode&utm_medium=feed) [Aug 2, 2025](https://hashnode.com/posts/dapps-and-smart-contract-abis/688da38f0e4eae8875b3a6fc) ### [Remix IDE vs Hardhat: Choosing Your First Solidity Development Environment](https://zarcc.hashnode.dev/remix-ide-vs-hardhat?utm_source=hashnode&utm_medium=feed) Learn when to use Remix IDE vs Hardhat for Solidity development. Complete beginner's guide with setup instructions, comparisons for smart contract developer 4 min read · [zarcc.hashnode.dev](https://zarcc.hashnode.dev/remix-ide-vs-hardhat?utm_source=hashnode&utm_medium=feed) [Jul 27, 2025](https://hashnode.com/posts/remix-ide-vs-hardhat/6886b3503a2c34a252aea3ae) ### [EIP-7702 Unveiled: How Ethereum Redefines Account Abstraction](https://zarcc.hashnode.dev/eip-7702-unveiled-how-ethereum-redefines-account-abstraction?utm_source=hashnode&utm_medium=feed) What Are Ethereum Improvement Proposals (EIPs)? You may be new to this concept, so I’ll be doing an introduction that will help you understand the basics of EIPs. Ethereum Improvement Proposals (EIPs) are design documents that propose changes or impr... 5 min read · [zarcc.hashnode.dev](https://zarcc.hashnode.dev/eip-7702-unveiled-how-ethereum-redefines-account-abstraction?utm_source=hashnode&utm_medium=feed) [Jul 19, 2025](https://hashnode.com/posts/eip-7702-unveiled-how-ethereum-redefines-account-abstraction/687bc53b82236f3ac8e58a72)