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What is BEP-20

What is BEP-20

BEP-20 is the token standard used on BNB Smart Chain (BSC) — the EVM-compatible blockchain operated by the BNB Chain ecosystem. BEP-20 defines a common set of rules that every fungible token on BSC must follow: how tokens are transferred, how balances are queried, how spending allowances are granted, and how token metadata (name, symbol, decimals) is exposed.

BEP-20 is functionally equivalent to Ethereum's ERC-20 standard. Because BNB Smart Chain is EVM-compatible, BEP-20 tokens use the same interface, the same function signatures, and the same event structure as ERC-20 tokens. Wallets, block explorers, and development tools that support ERC-20 generally work with BEP-20 tokens with minimal or no modification.

In short: BEP-20 is the BSC equivalent of ERC-20 — and in DecAIHub project cards, Token standard: BEP-20 means the project's token is a fungible token deployed on BNB Smart Chain following its standard interface.

How BEP-20 works

The standard interface

BEP-20 specifies a set of mandatory functions and events that every compliant token contract must implement:

  • totalSupply — returns the total number of tokens in existence.
  • balanceOf — returns the token balance of a given address.
  • transfer — moves tokens from the caller's address to a recipient.
  • transferFrom — moves tokens from one address to another, using a pre-approved allowance.
  • approve — grants another address permission to spend a specified amount of tokens on the caller's behalf.
  • allowance — returns the remaining amount that a spender is still allowed to withdraw from an owner.

These functions mirror ERC-20 exactly. A developer who has written an ERC-20 token contract can deploy it on BSC as a BEP-20 token with no changes to the core logic. The difference is the deployment network, not the contract code.

BEP-20 vs. ERC-20

Aspect ERC-20 BEP-20
Network Ethereum BNB Smart Chain
Virtual machine EVM EVM (compatible)
Interface Identical Identical
Gas token ETH BNB
Typical transaction cost Higher (Ethereum L1 fees) Lower (BSC fees)
Ecosystem Largest DeFi and NFT ecosystem Large ecosystem with lower-cost transactions

The technical distinction is minimal: the same Solidity code, the same ABI, the same tooling. The practical distinction is economic and ecosystem-based — different gas costs, different validator sets, different DeFi protocols, and different user communities.

Deployment and tooling

BEP-20 tokens are deployed using the same tools as ERC-20 tokens: Solidity or Vyper smart contracts, compiled and deployed through frameworks like Hardhat, Foundry, or Remix. Wallets like MetaMask support BSC natively (by adding the BSC network RPC). Block explorers like BscScan provide contract verification and token tracking equivalent to Etherscan on Ethereum.

Why BEP-20 matters for crypto AI projects

Lower transaction costs. BSC offers lower gas fees than Ethereum mainnet, which makes it attractive for AI projects that involve frequent small transactions — micropayments for inference, data labeling rewards, or automated agent operations. Lower costs reduce the barrier for high-volume on-chain activity.

EVM compatibility. Projects that build on ERC-20 standards can deploy on BSC with minimal changes, accessing a different user base and liquidity pool. AI projects that want multi-chain presence often deploy both ERC-20 and BEP-20 versions of their token.

Ecosystem access. BSC has a substantial DeFi ecosystem (PancakeSwap, Venus, and others) that BEP-20 tokens can plug into. For AI projects that need on-chain liquidity, staking infrastructure, or DeFi integrations, BEP-20 deployment provides access to BSC's established infrastructure.

Where this appears in DecAIHub project cards

  • Token standard — BEP-20 appears as the value in the Token standard field for projects whose primary or only token is deployed on BNB Smart Chain. This is one of the most common token standards in the DecAIHub catalog.
  • Main chain — projects with BEP-20 tokens typically list BNB Smart Chain (or BSC) as their main chain or one of their chains. The token standard and main chain fields are closely related — BEP-20 implies BSC.
  • Token model — the token model describes the economic design of the token (utility, governance, staking, etc.), which is independent of the standard. BEP-20 defines the technical interface; the token model defines the economic function.

When a project card shows Token standard: BEP-20, it tells you the token lives on BSC and follows the standard interface. It does not tell you anything about what the token does, why it exists, or whether the project has genuine AI.

What BEP-20 alone does not prove

  • AI reality — a BEP-20 token can be created in minutes with no AI component whatsoever. The token standard is a technical specification, not evidence of AI capability.
  • Token necessity — deploying a BEP-20 token does not explain why the project needs a token at all. Many BEP-20 tokens exist without clear utility beyond speculation. Token necessity is assessed independently.
  • Security — BEP-20 is a standard interface, not a security guarantee. Token contracts can contain bugs, backdoors, or admin functions that allow the deployer to mint unlimited tokens, pause transfers, or blacklist addresses. Contract audits and source code verification are separate from standard compliance.
  • Uniqueness — BEP-20 is a shared standard used by thousands of tokens. Being a BEP-20 token does not differentiate a project from any other BSC token.
  • Chain quality — the token standard tells you the deployment chain, but it does not make a claim about the chain's decentralization, security, or suitability for the project's use case.

Do not confuse with

Term Distinction
ERC-20 ERC-20 is the same interface deployed on Ethereum. BEP-20 and ERC-20 are technically identical but live on different networks and are not interchangeable without bridging.
BNB (native token) BNB is the native gas token of BNB Smart Chain, used to pay transaction fees. A BEP-20 token is a project-issued token deployed on BSC — it is not the chain's native currency.
Token standard Token standard is the general concept covering all chain-specific formats (ERC-20, BEP-20, SPL, etc.). BEP-20 is one specific standard within that broader category.

Frequently asked questions

Is BEP-20 the same as ERC-20?

Technically, they implement the same interface — identical function signatures, events, and behavior. The difference is the deployment network: ERC-20 tokens live on Ethereum, BEP-20 tokens live on BNB Smart Chain. A BEP-20 token on BSC and an ERC-20 token on Ethereum are not interchangeable without bridging, even though their contracts may be identical. Think of them as the same format on different networks.

Can a project have both ERC-20 and BEP-20 tokens?

Yes. Many projects deploy their token on multiple chains — an ERC-20 version on Ethereum and a BEP-20 version on BSC (and sometimes additional versions on other chains). These multi-chain tokens are typically connected by bridge contracts that lock tokens on one chain and mint equivalent tokens on another. DecAIHub project cards may list multiple token standards when a project operates across chains.

Why do some AI projects choose BSC over Ethereum?

Lower transaction costs and faster block times are the most common reasons. For AI projects that involve high-frequency on-chain operations — such as micropayments for compute, frequent oracle updates, or automated agent transactions — Ethereum's higher gas fees can make operations prohibitively expensive. BSC offers a practical alternative with EVM compatibility, though with different decentralization characteristics and validator set composition.

External references

See also

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