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#smart-contracts
If you're looking to deploy a smart contract on any EVM (Ethereum Virtual Machine) chain, you may have encountered some roadblocks. With different chains having their own unique quirks, it can be challenging to navigate the process of deplo…
This is similar to the previous challenge Gatekeeper One in the sense that, it also has three modifiers/gates that you need to pass. You will learn about extcodesize() and the bitwise XOR operator. T…
I will explain the challenge in a slightly different way this time, usually, we start with some background information, look at the code, and then write a solution. This challenge is different as ther…
Signatures can be used in Ethereum transactions to validate computation performed off-chain, helping to minimize on-chain gas fees. Signatures are primarily used to authorize transactions on behalf of the signer and to prove that a signer s…
Blockchain technology over the years is one of the emerging technologies that has revolutionized many sectors including finance, healthcare, gaming and art, among others. This technology became preval…
This guide will show you how to deploy any smart contract to the Ethereum network. By the end, you'll learn how to create a simple NFT Drop smart contract, deploy it to the Sepolia testnet, and mint a…
This guide will show you how to deploy any smart contract to the Polygon network. By the end, you'll learn how to create a simple NFT Drop smart contract, deploy it to the Polygon Mumbai testnet, and …
In this guide, I'll show you how to create a full-stack web3 application on the Polygon zkEVM. By the end of the guide, we'll cover how to: Set up our wallet to connect to the Polygon zkEVM Create a…
This challenge is marked as a 4/5 difficulty level problem but would fail to meet your expectations. If you remember the Vault - Level 8, you pretty much understand the background required to get your…
Decentralized Finance is an interesting field where there are a lot of new approaches being explored around how money can be used for lending and trading. The approaches are very different from what w…
