How Do Token Standards Work?

By CoinUnited.io Research Team

17 Jan 2023

2 min read

Standards for tokens are norms and guidelines for the operation of a digital token. ERC-20, BEP-20, ERC-721, and ERC-1155 are only a few of the most well-known standards. Token standards are useful because.

Token standards guarantee compatibility between all products developed to that standard. Existing platforms and apps, such as wallets, will continue to be interoperable with a new token that is issued by a project if the token is created according to a token standard. For instance, the ERC-20 token standard ensures that ERC-20 assets may be used with other goods and services built on top of the same protocol. Because of this, your ERC-20 token may be exchanged for something else. Trading between different cryptocurrencies would be much more difficult without token standards. In addition, you'd need to hold individual wallets for each tokens instead of having a single wallet to store a wide variety of cryptocurrencies.

Composability in software development refers to the ability to combine different parts of an existing system into a whole. The same logic may be applied to token creation: if developers spend less time on fundamental functionality thanks to token standards, they'll have more time for creative problem-solving.

Interaction between smart contracts is facilitated further by token standards. When tokens are deployed using smart contracts that adhere to token standards, they may then be used to keep an eye on the tokens themselves. Standardized token formats like ERC-20 and BEP-20 include useful features like address retrieval and token balances that improve the efficiency with which smart contracts keep track of tokens. For instance, a programmer can utilize the Contract Application Binary Interface (ABI) to monitor token transfers and other data in an ERC-20 token.

The BNB Smart Chain uses the BEP-20 token standard (BSC). Tokens like as peg currencies, utility tokens, stablecoins, and more may be created according to this BSC technical definition. Additionally, BEP-20 adds new capabilities including blacklisting, minting, and halting token burning. The primary uses of the BEP-20 token standard are as follows: The TotalSupply parameter of a BEP-20 token specifies the whole number of tokens that will ever be created for that token. The token's value is specified by the BalanceOf parameter. Token ownership can be transferred between users. TransferFrom: enables a smart contract user to delegate token transfer authority to another user. Accept: sets a maximum threshold for the smart contract to withdraw tokens. Token spending authorization is specified through a list of external addresses.

By proposing the ERC-20 token standard in 2015, Fabian Vogelsteller laid the groundwork for the creation of many other types of digital tokens, including staking tokens and virtual currencies. The ERC-20 token standard was created so that developers could create assets that were compatible with one another and operated under the same set of guidelines (i.e., fungible). This means that if you issue a thousand ERC-20 tokens, they will all be identical in every token. However, keep in mind that they each belong to their own unique blockchain network. Tokens on the Ethereum blockchain adhere to the ERC-20 standard, whereas those on the CoinUnited.io Smart Chain employ the binary extensible programming language token (BEP-20) (BSC).

Did you know that the vast majority of Ethereum's non-fungible tokens (NFTs) all adhere to the same token standard, ERC-721? Your NFT probably followed the same guidelines as a Proof of Attendance Protocol (POAP) or a similarly numbered limited edition NFT. In order to qualify as an ERC-721 token, the asset in question must, among other things, have a tokenId that is really unique throughout the whole blockchain. Token transfers, balances, totals, and global uniquness are all features of ERC-721.

A single standard covering the industry's demand for several token kinds will emerge as token standards progress. Utility tokens like BNB and NFTs may be created using ERC-1155, a multi-token standard for digital assets. ERC-1155 supports a variety of token batch operations, such as: During a batch transfer, several assets might change hands at once. When many assets' balances may be accessed simultaneously, this is known as a "batch balance." Tokens can be authorized to an address in bulk. If there is just one token in circulation, it is considered a non-fungible token (NFT), which is supported.

Tokens built to the same standards are compatible with one another and share a common set of features, whereas tokens built to different standards are less likely to do so. It is not surprising that token standards might be incompatible with one another, given that various industries have distinct laws controlling them. Tokens built to various standards may not be compatible with one another, meaning they may not be able to be used on the same platform, interact with one another, or be exchanged with one another. Those who hold more than one cryptocurrency may know the anguish of trying to spend Bitcoin (BTC) on Ethereum (ETH) and being unable to do so. Wrapped tokens are a new type of token developed by the industry to address this restriction.

A wrapped token is a cryptocurrency whose value is tied to that of another coin. The original asset is often stored in a digital vault called a wrapper, and an avatar representing the wrapped version is then produced on another blockchain.

Token standards may be thought of as guides for developing and releasing tokens that operate on blockchain networks. There are now several token standards in use, however friction between them may be mitigated via the use of creative solutions like blockchain bridges and wrapping techniques.

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