What Is ERC-20 and What Does It Mean for Ethereum?

The popular cryptocurrency and blockchain system Ethereum is based on the use of tokens, which can be bought, sold, or traded. Ethereum was launched in 2015, and since then it has become one of the driving forces behind the popularity of cryptocurrency. In the Ethereum system, tokens represent a diverse range of digital assets, such as vouchers, IOUs, or even real-world, tangible objects. Essentially, Ethereum tokens are smart contracts that make use of the Ethereum blockchain.

What Is ERC-20?

One of the most significant Ethereum tokens is known as ERC-20. ERC-20 has emerged as the technical standard; it is used for all smart contracts on the Ethereum blockchain for token implementation and provides a list of rules that all Ethereum-based tokens must follow.

ERC-20 is similar, in some respects, to bitcoin, Litecoin, and any other cryptocurrency; ERC-20 tokens are blockchain-based assets that have value and can be sent and received. The primary difference is that instead of running on their own blockchain, ERC-20 tokens are issued on the Ethereum network.

ERC-20 Defines a Common List of Rules

As of October 2019, more than 200,000 ERC-20-compatible tokens exist on Ethereu