Solidity

Contrary to popular belief, blockchains are not immutable because of cryptography, but because of economic incentive.

EIP-150, or Ethereum Improvement Proposal 150, is a protocol upgrade for the Ethereum blockchain.

Solidity events are the closest thing to a print or console.log statement in Ethereum.

Here is a minimal (copy and paste) example of how to safely create and verify ECDSA signatures with OpenZeppelin in the Foundry environment.

An Ethereum access list transaction enables saving gas on cross-contract calls by declaring in advance which contract and storage slots will be accessed.

But it's cleaner and safer to use type(uint256).max. A uintN means there are N bits that represent the number, and when all of them are set to 1, this is…

To test an internal Solidity function, create a child contract that inherits from the contract being tested, wrap the parent contract’s internal function…

This article will describe how to create unit tests in Solidity using Foundry.

The purpose of this article is not to rehash the official Solidity Style Guide, which you should read.

Creating a contract that gives certain addresses permissions goes by several names: airdrops, presale, whitelist, allowlist, and so forth.

Is gold in your future if you study blockchain? This might sound funny coming from a blockchain bootcamp, but it’s true.

Reentrancy can only happen when your smart contract calls another smart contract via function call or sending ether.