BNB is the native cryptocurrency of the BNB Chain ecosystem, where it is used for transaction fees, staking, governance and interaction with blockchain applications.
The asset began in 2017 as an ERC-20 token associated closely with the Binance cryptocurrency exchange. Since then, both its technical architecture and its role have changed substantially.
BNB migrated away from Ethereum, became the native asset of its own blockchain infrastructure, gained a central role in BNB Smart Chain, and now operates across an ecosystem that also includes opBNB and BNB Greenfield.
The name has evolved as well.
BNB was historically known as Binance Coin. In 2022, the ecosystem adopted the BNB Chain branding and described “BNB” around the “Build and Build” philosophy, reducing the emphasis on the asset being merely an exchange token.
Understanding BNB today therefore requires separating its origins at Binance from its current role as the native asset securing and powering BNB Chain.
BNB vs BNB Chain#
BNB is the cryptocurrency.
BNB Chain is the wider blockchain ecosystem in which BNB is used.
Its infrastructure includes several distinct components.
BNB Smart Chain, commonly shortened to BSC, is the primary EVM-compatible Layer 1 blockchain.
opBNB is a Layer 2 scaling system built around BNB Smart Chain.
BNB Greenfield is a separate blockchain and storage-focused network that also uses BNB.
BNB therefore should not be confused with the blockchain itself.
It is the asset used across several parts of the ecosystem.
Was BNB Originally Called Binance Coin?#
Yes.
BNB launched in 2017 as Binance Coin and initially existed as an ERC-20 token on Ethereum.
At the time, one of its primary purposes was to provide utility within the Binance exchange ecosystem, including trading-fee benefits.
Its role expanded substantially after that.
In April 2019, BNB migrated from Ethereum to the newly launched Binance Chain.
Binance Smart Chain followed in September 2020, adding an Ethereum-compatible smart-contract environment.
In 2022, Binance Chain and Binance Smart Chain were brought under the broader BNB Chain identity.
“BNB” remained the ticker, while the ecosystem increasingly described the letters through the “Build and Build” philosophy.
The historical term Binance Coin can therefore still appear on exchanges, websites and older documentation, but BNB is the current name used throughout official BNB Chain material.
How BNB Evolved#
BNB’s history can be divided into several major stages.
2017 — BNB launched as an ERC-20 token on Ethereum.
2019 — BNB migrated to Binance Chain as a native asset.
2020 — Binance Smart Chain launched, using BNB for gas and network participation.
2022 — Binance Chain and Binance Smart Chain were rebranded under BNB Chain.
2024 — BNB Chain Fusion migrated staking, governance and other remaining Beacon Chain functions onto BNB Smart Chain and retired BNB Beacon Chain.
2025 — upgrades including Pascal, Lorentz and Maxwell expanded Ethereum compatibility and reduced BSC block times.
2026 — Fermi reduced BSC block intervals to approximately 0.45 seconds, while later upgrades including Osaka/Mendel and Pasteur focused on network consistency, security and capacity.
The network architecture surrounding BNB today is therefore substantially different from the system that existed when the token launched.
What Is BNB Smart Chain?#
BNB Smart Chain is an EVM-compatible Layer 1 blockchain.
EVM compatibility means developers can use many of the same programming languages, development frameworks and smart-contract concepts used by Ethereum.
Applications can deploy smart contracts for uses including:
decentralized exchanges
lending and borrowing
stablecoins
gaming
token issuance
NFTs
payments
DAOs
derivatives
real-world assets
BNB is the native gas asset used to pay for execution on BSC.
It is not a BEP-20 token contract in the same way that an ordinary application token is.
Native BNB exists directly at the protocol level.
Does BNB Smart Chain Use Proof of Stake?#
BNB Smart Chain uses a consensus mechanism called Proof of Staked Authority, or PoSA.
PoSA combines aspects of delegated Proof of Stake with an authority-style validator system.
BNB holders can stake or delegate BNB to validator candidates.
Validator selection is influenced by the amount of BNB bonded to candidates.
A limited validator set then participates directly in block production and network consensus.
This differs from Ethereum’s Proof-of-Stake design, where a much larger set of individual validator instances can participate.
It also differs from Proof-of-Work systems such as Bitcoin because BSC does not rely on miners competing with computational hashing power.
How BSC Validators Work#
Validators operate BNB Smart Chain nodes and participate in consensus.
Current BSC documentation describes an active validator system in which validator candidates are ranked according to staking.
The active group includes Cabinet validators and Candidates.
For each epoch, a subset participates in block production.
Validators can earn BNB from transaction fees and distribute a portion of those rewards to delegators.
Validators can also face penalties for protocol violations or extended unavailability.
The network includes slashing rules covering behavior such as double signing.
BNB therefore provides economic collateral for BSC’s consensus process.
How Fast Is BNB Smart Chain?#
BNB Smart Chain’s performance has changed substantially through protocol upgrades.
For years, BSC operated with block intervals of approximately three seconds.
The Lorentz upgrade in 2025 reduced that interval to around 1.5 seconds.
Maxwell subsequently reduced it to approximately 0.75 seconds.
The Fermi upgrade, activated in January 2026, reduced the target block interval again to approximately:
0.45 seconds
Current BNB Chain documentation describes Fast Finality as capable of finalizing the chain within roughly two blocks under normal voting conditions.
At the current block interval, that produces finality of approximately one second.
These figures describe current protocol settings and can change through future network upgrades.
What Was the BNB Beacon Chain?#
BNB Chain previously operated with two major chains.
BNB Beacon Chain handled functions including staking and governance.
BNB Smart Chain handled EVM-compatible smart contracts and decentralized applications.
The architecture required communication between the two chains.
BNB Chain later concluded that maintaining this dual-chain arrangement added complexity and additional security considerations.
The BNB Chain Fusion process therefore migrated Beacon Chain functionality onto BNB Smart Chain.
The Beacon Chain reached its final sunset in late 2024 and has since been retired.
Its validator nodes were shut down and native staking and governance moved directly onto BSC.
BNB Beacon Chain is therefore historical infrastructure rather than an active companion blockchain to BSC.
What Happened to BEP-2 BNB?#
BNB historically existed on the Beacon Chain under the BEP-2 framework.
Following BNB Chain Fusion, the Beacon Chain was shut down and users were directed toward BNB Smart Chain.
BNB on BSC is now the principal native form used within the active BSC environment.
A recovery mechanism has remained available for certain eligible assets left behind on Beacon Chain, although BNB Chain began phasing that recovery system down in 2026.
BEP-2 should therefore be understood primarily as part of BNB’s historical architecture rather than the normal format for modern BSC activity.
Is BNB a BEP-20 Token?#
Native BNB on BNB Smart Chain is the blockchain’s protocol-level currency.
BEP-20 is the token interface used by smart contracts to create fungible tokens on BSC, similar in concept to ERC-20 on Ethereum.
BEP-20 tokens use smart contracts.
Native BNB does not require a BEP-20 contract for an ordinary BSC transaction.
Wrapped BNB, commonly called WBNB, is different.
WBNB is a BEP-20-compatible representation of BNB that allows smart contracts designed around the token interface to interact with BNB more easily.
Users can generally wrap native BNB into WBNB and unwrap it back again.
The distinction is similar to native ETH and WETH on Ethereum.
What Is BNB Used For?#
BNB has several protocol and application-level uses.
Transaction fees#
BNB pays gas fees for transactions and smart-contract execution on BNB Smart Chain.
Staking#
BNB can be staked or delegated to validators participating in BSC consensus.
Governance#
Staked BNB can provide governance participation through BSC’s native governance system.
DeFi#
BNB is used as collateral, liquidity and a trading asset across decentralized applications.
opBNB#
BNB is used throughout the BNB Layer 2 ecosystem, including for transaction activity on opBNB.
BNB Greenfield#
Greenfield uses BNB for gas, staking, governance and storage-related payments.
Applications and payments#
Third-party services can integrate BNB for payments or other application-specific uses.
BNB may also retain uses through Binance products, but those exchange-specific utilities are separate from its protocol role on BNB Chain and can change according to Binance’s own policies.
How Does BNB Staking Work?#
BNB holders can participate in BSC staking by delegating their BNB to validators.
After BNB Chain Fusion, staking moved directly onto BNB Smart Chain.
Validators need their own stake and can receive delegated BNB from other holders.
The amount delegated helps determine validator ranking and participation.
Validators earn transaction-fee revenue when performing network duties and can share rewards with delegators according to their commission arrangements.
Staked assets are subject to protocol rules including unbonding periods.
Delegating BNB does not guarantee a fixed return.
Validator performance, commission rates, network activity and governance parameters can all affect staking outcomes.
Does BNB Pay Mining Rewards?#
No.
BNB Smart Chain does not use cryptocurrency mining.
There is also no Bitcoin-style block subsidy continuously creating new BNB for validators.
Current BSC documentation describes BNB as non-inflationary at the protocol level.
Validator rewards principally come from transaction fees rather than newly mined BNB.
Part of the network’s fee flow can also be permanently burned.
This distinguishes BNB’s monetary model from networks where continuous base-layer issuance funds block rewards.
How Does BNB Governance Work?#
BNB Smart Chain supports native on-chain governance.
BEP-297 introduced a governance system based partly on concepts from OpenZeppelin Governor.
Staking-credit holders can participate in governance and may delegate their voting rights.
Governance proposals can modify eligible network parameters or invoke specified system actions.
Successful proposals are subject to voting requirements and a timelock before execution.
Participation is therefore connected to BNB staking rather than simply counting every liquid BNB balance automatically as one active governance vote.
Does BNB Have a Maximum Supply?#
BNB launched with an initial supply of:
200,000,000 BNB
Its monetary model is unusual because the long-term objective is not to maintain that original supply.
BNB’s Auto-Burn mechanism is designed to progressively reduce total supply until approximately:
100,000,000 BNB
remain.
This does not mean 100 million new BNB will be issued.
It is a supply-reduction target.
BNB’s circulating and total supply therefore change as tokens are permanently removed through its burn mechanisms.
BNB’s current supply is time-sensitive because ongoing burns continue to reduce it toward the long-term 100 million BNB target.
What Is the BNB Auto-Burn?#
The Auto-Burn is a periodic mechanism for permanently removing BNB from supply.
Earlier BNB burns were closely associated with Binance’s business performance and exchange profits.
The modern mechanism works differently.
BNB Auto-Burn uses a formula based on factors including BNB’s market price and BSC block production.
The process is intended to continue reducing supply toward the 100 million BNB target.
Since BNB Chain Fusion, quarterly burns take place directly on BNB Smart Chain.
Burned BNB is sent to an inaccessible address so that it can no longer circulate.
Modern BNB Auto-Burn is formula-based and is no longer tied directly to Binance’s reported profits.
What Is the Real-Time BNB Burn?#
BNB also has a separate real-time burn mechanism introduced through BEP-95.
A portion of the gas fees collected from BSC activity is permanently burned.
This means some BNB can be destroyed continuously as the blockchain is used.
The mechanism is distinct from the periodic Auto-Burn.
Its effect depends on network activity and the burn ratio established through governance.
BNB Chain has stated that this real-time burn mechanism is intended to continue even after the Auto-Burn eventually reaches its supply target.
How Much BNB Has Been Burned?#
BNB burns occur over time, so any exact number becomes outdated.
The 36th quarterly burn, completed on July 15, 2026, removed approximately:
1,615,827.795 BNB
BNB Chain reported a remaining total supply of approximately 133.17 million BNB at that point.
Additional real-time burns continue between quarterly events, so these figures should be treated as a dated snapshot rather than the permanent supply.
The long-term Auto-Burn objective remains 100 million BNB.
What Happened During the 2022 BNB Bridge Exploit?#
BNB’s supply history includes an unusual event in October 2022.
An exploit involving the BSC Token Hub caused roughly two million additional BNB to be created.
This temporarily increased the asset’s supply beyond its original 200 million issuance.
BNB Chain subsequently reported that approximately 1.02 million of that BNB was locked and burned, while the remaining excess was incorporated into the broader burn process.
This event is one reason BNB’s historical supply is more complicated than simply saying that exactly 200 million coins were created and only burns have occurred since.
What Is opBNB?#
opBNB is a Layer 2 scaling environment built around BNB Smart Chain.
It uses technology derived from the Optimism OP Stack.
Rather than executing every transaction directly on BSC, opBNB processes activity at Layer 2 and publishes relevant transaction data and state information back to BSC.
This architecture is intended to provide higher throughput and lower transaction costs for applications requiring more execution capacity.
BNB can be moved between BSC and opBNB and used for transaction fees.
Using opBNB introduces additional architecture beyond simply holding native BNB on BSC, including sequencers, bridges and rollup contracts.
What Is BNB Greenfield?#
BNB Greenfield is a storage-focused blockchain and decentralized data infrastructure system.
It combines a blockchain ledger with independent storage providers.
Greenfield records information about data ownership, permissions and storage relationships while storage providers handle the underlying data.
BNB is used within Greenfield for:
gas
staking
governance
storage-service fees
BNB can move between BSC and Greenfield through the ecosystem’s cross-chain infrastructure.
Greenfield has its own validators and consensus environment, so it should not be described as simply another smart contract running on BSC.
Is BNB Chain EVM Compatible?#
Yes.
BNB Smart Chain is EVM compatible.
This allows many Ethereum development tools, smart-contract languages and wallet interfaces to work with BSC.
Developers commonly use Solidity and frameworks also seen in Ethereum development.
Addresses use the familiar EVM-style hexadecimal format beginning with 0x.
Compatibility does not mean BSC and Ethereum are the same network.
They have independent validator systems, consensus rules, transaction histories, gas markets and governance.
A token on Ethereum also does not automatically exist on BSC simply because both networks support the EVM.
What Are BEP-20 Tokens?#
BEP-20 is a token standard used on BNB Smart Chain.
It is closely related to Ethereum’s ERC-20 interface.
Developers can deploy BEP-20 contracts representing assets such as:
stablecoins
governance tokens
application tokens
wrapped assets
memecoins
game assets
The ability to create a BEP-20 token does not mean BNB Chain or its validators endorse the token.
Smart contracts can be deployed permissionlessly, and users need to verify the contract they are interacting with.
How Are BNB Transaction Fees Calculated?#
Transactions on BNB Smart Chain consume gas.
The amount required depends on the computational work performed.
A simple BNB transfer normally uses less gas than a complex smart-contract interaction.
The final cost depends on:
gas consumed
the applicable gas price
current network settings
the application being used
BNB Chain has repeatedly adjusted network performance and fee parameters through protocol upgrades.
There is therefore no permanent fixed dollar cost for a BNB transaction.
Fees should be evaluated in BNB and according to current network conditions.
What Changed With Fermi?#
The Fermi hard fork activated on BSC in January 2026.
Its most visible change was another reduction in block interval.
BSC moved from approximately 0.75-second blocks after Maxwell to approximately:
0.45 seconds
Fermi also strengthened fast-finality behavior and introduced other execution and node improvements intended to keep network operation stable at the shorter block interval.
The upgrade continued a sequence that began with Lorentz and Maxwell during 2025.
What Changed With Pasteur?#
Pasteur activated on BNB Smart Chain in August 2026.
Unlike Fermi, its primary purpose was not another reduction in block time.
The upgrade included changes addressing bridge verification, staking and governance behavior, along with improvements intended to make more effective use of available block capacity.
BNB Chain’s testnet benchmarks reported higher transaction-processing capacity from the relevant block-utilization changes.
Benchmark throughput should not be interpreted as a guarantee that every real application will experience the same transaction rate.
Actual performance depends on workload, network state and application behavior.
Who Controls BNB Chain?#
BNB Chain does not operate like a company database controlled through one ordinary administrator account.
Its blockchain state is maintained by validators running consensus software.
BNB staking determines participation in the validator-selection system, and protocol governance can be exercised through on-chain mechanisms.
However, BSC deliberately operates with a comparatively limited validator set.
That architecture provides different decentralization trade-offs from networks with thousands of directly participating validators.
BNB Chain also has a historical and continuing relationship with Binance, which originally created BNB and supported the development of the surrounding ecosystem.
BNB Chain states that Binance does not control the blockchain itself.
Those distinctions matter.
Binance the exchange, BNB the asset and BNB Chain the blockchain ecosystem are related historically and economically, but they are not technically identical entities.
Is BNB the Same as Binance?#
No.
Binance is a cryptocurrency exchange and broader group of related services.
BNB is a cryptocurrency.
BNB Chain is blockchain infrastructure.
BNB originated at Binance and remains strongly associated with the Binance ecosystem, but holding BNB does not represent ownership of Binance.
BNB is also used independently of the Binance exchange through wallets, smart contracts, validators and decentralized applications.
Conversely, rules or features provided specifically by Binance.com should not automatically be treated as protocol features of BNB Chain.
Can BNB Transactions Be Reversed?#
Normal finalized BSC transactions cannot simply be reversed through a customer-support request.
If a user sends BNB to an incorrect address and retains no control over the receiving address, the blockchain does not provide a general undo function.
Applications and bridges may have their own administrative mechanisms.
Centralized exchanges can also control balances maintained inside their own systems.
Those application-level controls are separate from the finality rules governing native BSC transactions.
Is BNB Private?#
No.
BNB Smart Chain is a public blockchain.
Addresses, balances, smart-contract interactions and transaction histories can generally be inspected through explorers such as BscScan.
Addresses are pseudonymous rather than automatically containing a person’s legal identity.
External information can nevertheless connect an address with an individual or organization.
BNB should therefore not be considered a privacy coin.
What Are the Main Risks of Using BNB?#
BNB users can encounter several different types of risk.
Price risk#
BNB is a market-traded cryptocurrency and its price can change substantially.
Smart-contract risk#
Applications built on BSC can contain vulnerabilities or malicious code.
Validator and consensus risk#
BNB Smart Chain relies on a relatively limited active validator system.
Staking risk#
Validator performance, slashing, commission changes and unbonding rules can affect delegators.
Bridge risk#
Moving assets between BSC, opBNB, Greenfield or unrelated blockchains can introduce additional infrastructure and smart-contract dependencies.
Application risk#
A decentralized application’s security is separate from BNB Smart Chain’s base-layer security.
Custody risk#
Holding BNB on an exchange means the exchange generally controls the private keys.
Regulatory risk#
The legal treatment of exchanges, tokens, staking and blockchain services differs by jurisdiction and can change.
Ecosystem concentration#
BNB’s history and large ecosystem overlap with Binance can create dependencies and perceptions that differ from cryptocurrencies whose development originated without a dominant commercial platform.
These risks should be evaluated separately rather than assuming that network operation guarantees the safety of every service using BNB.
How to Research BNB Independently#
Current BNB information can be verified through primary network resources.
BNB Chain maintains public documentation covering:
BSC consensus
validators
staking
governance
network upgrades
BNB burns
opBNB
Greenfield
BNB Chain Fusion
The BSC client is also developed in public repositories.
Blockchain explorers can be used to inspect transactions, validator activity, contracts and burn addresses directly.
Because BNB’s architecture has changed considerably since 2017, dates matter when consulting documentation.
Pages describing BNB exclusively as an ERC-20 token, Binance Chain as the active primary network, Beacon Chain as the staking layer or three-second BSC blocks describe earlier stages of the ecosystem.
For structured project information and official links, see the BNB profile on Chainquiry.
Final Perspective#
BNB has evolved considerably beyond its original role as Binance Coin.
It began as an Ethereum-based exchange utility token in 2017, moved to its own blockchain infrastructure in 2019 and became the native asset powering BNB Smart Chain after BSC launched in 2020.
Today, BNB pays gas, provides staking collateral, supports on-chain governance and is used throughout an ecosystem that includes BSC, opBNB and BNB Greenfield.
BNB Smart Chain is secured through Proof of Staked Authority rather than mining, and validators principally earn transaction fees rather than newly issued block rewards.
Its monetary model also combines two distinct supply-reduction mechanisms: periodic Auto-Burns intended to bring total supply toward 100 million BNB and BEP-95’s ongoing real-time gas-fee burn.
Meanwhile, BNB Chain Fusion retired the former Beacon Chain, and successive upgrades have reduced BSC block intervals to approximately 0.45 seconds while moving staking and governance directly onto BSC.
The result is an asset whose modern role is much broader than an exchange discount token.
Understanding BNB requires distinguishing the asset itself, BNB Smart Chain, Binance the exchange and the additional networks and applications that now make up the wider BNB Chain ecosystem.
