ERC Token Standards

ERC20 Standards Token  is the Ethereum token system ,which is used for Ethereum smart contracts platform. Developed in 2015, ERC-20 defines a common list of rules to function within the Ethereum ecosystem. 

The Ethereum community created these standards with six mandatory and three optional rules.

Mandatory

• totalSupply

• balanceOf

• transfer

• transferFrom

• approve

• allowance

Optional

• Token Name

• Symbol

• Decimal (up to 18)

Other ERC Token standards for Ref. 

1. ERC-20 Token Standard. https://eips.ethereum.org/EIPS/eip-20

2. ERC-165 Standard Interface Detection. https://eips.ethereum.org/EIPS/eip-165

3. ERC-173 Owned Standard. https://eips.ethereum.org/EIPS/eip-173

4. ERC-223 Token Standard. https://github.com/ethereum/EIPs/issues/223

5. ERC-677 transferAndCall Token Standard. https://github.com/ethereum/EIPs/issues/677

6. ERC-721 Non-Fungible Token Standard https://eips.ethereum.org/EIPS/eip-721

7. ERC-827 Token Standard. https://eips.ethereum.org/EIPS/eip-827