Standards for Non-Fungible Tokens
The NFTs developed in the NFT market, which is built on token standards including ERC-721, ERC-998, ERC-1155, and TRC-721.

ERC 721
Non-fungible tokens are represented by using the ERC-721 token standard. With the help of this token standard, users can easily swap tokens between accounts.

ERC 998
The ERC-721 standard has been expanded with the ERC-998 token standard. With the use of this token, users can exchange several non-fungible tokens at once.

ERC 1155
Tokens that are fungible and non-fungible can both be traded under the ERC-1155 token standard. With this token standard, users' transaction costs are kept to a minimum.

TRC 721
The main distinction between the TRC-721 token standard and the ERC-721 token standard, which is based on Ethereum, is that it is run on the TRON network.