CRC-20 and ERC-20 Compared: How Token Standards Work

Anyone who has packed for an overseas trip knows the small panic of the plug socket. Your laptop works perfectly at home, but abroad the pins are a different shape and nothing fits.

Electrical standards exist to stop that from happening inside a single country. Every appliance maker builds to the same socket, so any kettle works in any kitchen.

Crypto tokens have the same need. Thousands of tokens exist, and wallets, exchanges and apps cannot write custom code for every one. Token standards solve that. If you have seen "CRC-20" mentioned alongside "ERC-20" and wondered what the difference is, this guide will help.

What a token standard is

Go back to the plug socket. A socket standard does not tell you what the appliance does. A lamp and a toaster are very different, but both have the same plug, so both work in the same wall.

A token standard works in a similar way. It is an agreed list of functions that a token's smart contract must offer. The token itself might represent a game reward, a loyalty point or a project's core coin. As long as it follows the standard, any wallet or app that understands the standard can display it, send it and receive it.

Without standards, every new token would need its own custom integration.

ERC-20 in plain English

ERC-20 is the best-known token standard. It was introduced for Ethereum and describes fungible tokens, meaning each unit is interchangeable with any other, just as one pound coin is the same as the next.

An ERC-20 token contract offers a small set of core functions. Translated out of code, they look like this:

• totalSupply: how many of this token exist in total.
• balanceOf: how many tokens a particular address holds.
• transfer: send tokens from your address to someone else.
• approve: give another address, such as an app, permission to spend up to a set amount of your tokens.
• allowance: check how much an approved address is still allowed to spend.
• transferFrom: let that approved address actually move the tokens it has been permitted to use.

There are also two standard "events", Transfer and Approval, which are public announcements the contract makes whenever tokens move or permissions change. Explorers and wallets listen for these to keep your history up to date.

The approve function is worth a moment of attention. When you connect to an app and grant it permission to spend your tokens, you are using approve. It is a normal part of how decentralised apps work, but it is wise to grant only what you need and to review old permissions from time to time.

Where CRC-20 fits in

CRC-20 is the token standard used on CandyChain, the CANDY ecosystem's own EVM-compatible Layer 1 blockchain (Chain ID 2828). It is compatible with ERC-20.

In practice, that compatibility is the point. Because CRC-20 follows the same model, developers who know ERC-20 can build CRC-20 tokens using familiar code and tools. Wallets that understand ERC-20, such as MetaMask, can work with CRC-20 tokens once they are connected to CandyChain.

You can think of CRC-20 as the same plug design used on a different power grid. The shape is familiar, but it belongs to CandyChain's network rather than Ethereum's. That is why the name is different: it tells you which chain the token lives on.

Side-by-side comparison

A safety tip: the right token on the right network

Here is where the plug analogy needs one extra warning. On EVM-compatible networks, wallet addresses look the same format across chains. Your MetaMask address on Ethereum and on CandyChain may even be identical.

That convenience can catch people out. Sending a token on one network does not make it appear on another. If you send tokens on the wrong chain, or to an address on a platform that does not support that chain, recovering them can be difficult or impossible.

A few habits help:

1. Check the network in your wallet before you press send. For CandyChain, the Chain ID should be 2828.
2. Confirm the receiving side supports that network. An address being valid is not the same as the platform supporting the chain.
3. Send a small test amount first when using a new route.
4. Verify on the explorer. For CandyChain, look up the transaction on streams.candychain.io.
5. Use official sources. Take network and token details from cryptocandy.io, never from unsolicited messages, and never share your seed phrase.

The bottom line

Token standards are the plug sockets of crypto: they let any compatible wallet or app handle a token without special treatment. ERC-20 set the pattern on Ethereum, and CRC-20 brings that same, ERC-20-compatible pattern to CandyChain. The tokens behave alike, but the networks are separate, so a quick network check before every transfer is the habit that matters most.

This article is for information only and is not financial advice. Always do your own research and use official channels such as cryptocandy.io.