Category: ERC

ERC-7201 Storage Namespaces Explained ERC-7201 (formerly EIP-7201) is a standard for grouping storage variables together by a common identifier called a namespace, and also to document the group of variables…

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…

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…

ERC20 Votes: ERC5805 and ERC6372 ERC20 Votes Knowledge of ERC20 Snapshot is assumed, please refer to our article on ERC20 Snapshot for an introduction to the subject. ERC20 Votes does…

EIP 1967 Storage Slots for Proxies EIP 1967 is a standard for where to store information that proxy contracts need to execute. Both the UUPS (Universal Upgradeable Proxy Standard) and…

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…

Flash Loans and how to hack them: a walk through of ERC 3156 Flash loans are loans between smart contracts that must be repaid in the same transaction. This article…

Solidity Staticcall EIP 214 Staticcall is like a regular Ethereum call except that it reverts if a state change happens. It cannot be used to transfer Ether. Both the EVM…

EIP-2930 – Ethereum access list Introduction An Ethereum access list transaction enables saving gas on cross-contract calls by declaring in advance which contract and storage slots will be accessed. Up…

EIP-150 and the 63/64 Rule for Gas Introduction EIP-150, or Ethereum Improvement Proposal 150, is a protocol upgrade for the Ethereum blockchain. It was proposed on March 18, 2016, and…

EIP-3448 MetaProxy Standard: Minimal Proxy with support for immutable metadata The minimal proxy standard allows us to parameterize the creation of the clone, but this requires an extra initialization transaction.…

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…

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…

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…