ERC-1363 Standard Explained ERC-1363 enables a smart contract to detect and respond to an incoming transfer of tokens. What problem does ERC-1363 Solve? Suppose a user transfers an ERC-20 token to a contract. The smart contract cannot credit the user for the transfer because it has no mechanism to see who made the transfer. Although […]
How ERC721 Enumerable Works An Enumerable ERC721 is an ERC721 with added functionality that enables a smart contract to list all the NFTs an address owns. This article describes how ERC721Enumerable functions and how we can integrate it into an existing ERC721 project. We’ll use Open Zeppelin’s popular implementation of ERC721Enumerable for our explanation. Prerequisites […]
A comprehensive guide to the ERC 721 standard and related security issues ERC721 (or ERC-721) is the most widely used Ethereum standard for nonfungible tokens. It associates a unique number with an Ethereum address, thereby denoting that address owns the unique number — the NFT. There is indeed no shortage of tutorials covering this famous […]
ERC20 Snapshot ERC20 Snapshot solves the problem of double voting. If votes are weighed by the number of tokens someone holds, then a malicious actor can use their tokens to vote, then transfer the tokens to another address, vote with that, and so forth. If each address is a smart contract, then the hacker can […]
EIP-1167: Minimal Proxy Standard with Initialization (Clone pattern) Image from https://pixabay.com/photos/stormtrooper-star-wars-lego-storm-2899993/ Introduction EIP-1167, which is also referred to as the minimal proxy contract, is a commonly used solidity pattern for cheaply creating proxy clones. If a use case requires deploying an identical contract (or very similar contract) repeatedly, this is a more gas efficient way […]
ERC4626 Interface Explained ERC4626 is a tokenized vault standard that uses ERC20 tokens to represent shares of some other asset. How it works is you deposit one ERC20 token (token A) into the ERC4626 contract, and get another ERC20 token back, call it token S. In this example, token S represents your share of all […]