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An ERC20 token contract keeps track of fungible tokens: any one token is exactly equal to any other token; no tokens have special rights or behavior associated with them. This makes ERC20 tokens useful for things like a medium of exchange currency, voting rights, staking, and more.
This means * that a supply mechanism has to be added in a derived contract using {_mint}. * * TIP: For a detailed writeup see our guide * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226 [How * to implement supply mechanisms]. * * The default value of {decimals} is 18.
For an overview of ERC20 tokens and a walkthrough on how to create a token contract read our ERC20 guide.
ERC 20. This set of interfaces, contracts, and utilities are all related to the ERC20 Token Standard. For an overview of ERC20 tokens and a walk through on how to create a token contract read our ERC20 guide . There are a few core contracts that implement the behavior specified in the EIP:
OpenZeppelin Contracts helps you minimize risk by using battle-tested libraries of smart contracts for Ethereum and other blockchains. It includes the most used implementations of ERC standards. Start Coding. Bootstrap your smart contract creation with OpenZeppelin Contracts Wizard. ERC20. ERC721. ERC1155. Governor. Custom. Deploy with Defender.
Code of conduct. MIT license. Security. A library for secure smart contract development. Build on a solid foundation of community-vetted code. Implementations of standards like ERC20 and ERC721. Flexible role-based permissioning scheme. Reusable Solidity components to build custom contracts and complex decentralized systems.
Jan 26, 2019 · In this guide you will learn how to create an ERC20 token with a custom supply mechanism. We will showcase two idiomatic ways to use OpenZeppelin for this purpose that you will be able to apply to your smart contract development practice. This guide was written for OpenZeppelin 2.1.
