opBNB is built on the OP Stack, the same underlying framework as Optimism. It extends the Ethereum Virtual Machine (EVM) to provide faster and cheaper transactions, while leveraging BNB Smart Chain (BSC) for ecosystem integration.

opBNB is an Ethereum-compatible Layer 2 scaling solution designed to improve the performance and affordability of decentralized applications on BNB Chain. It provides high throughput and low fees, making it suitable for gaming, social, and DeFi applications.

opBNB is developed by BNB Chain, which is supported by contributors from the broader Binance ecosystem.

twitter

etherscan

website

Blockchains (L2)

opBNB

# opBNB Supply-side fees Methodology

## 1. Overview

Supply-side fees for opBNB represent the total gas fees collected by the network that go to validators and the network infrastructure, rather than being burned or destroyed. This metric measures the revenue generated by opBNB as a Layer 2 blockchain. Since opBNB is an optimistic rollup, fees consist of both Layer 2 execution costs and Layer 1 data availability costs. The calculation aggregates all transaction gas fees paid on the opBNB network and converts them to USD using BNB token prices.

## 2. Data sources

- **opBNB transaction data**: Complete transaction records from the opBNB blockchain including gas usage metrics (`gas_used`, `l1_gas_used`), pricing information (`gas_price`, `l1_gas_price`), and Layer 1 fee scaling factors (`l1_fee_scalar`)
- **Token price feeds**: End-of-day price feeds for WBNB (Wrapped BNB) used for USD conversion, since BNB is the native gas token on opBNB
- **Token metadata**: BNB token information including contract address (`0x4200000000000000000000000000000000000006`) and symbol

## 3. Step-by-step calculation

### Component A: Transaction data extraction
- **Purpose**: Extract and standardize opBNB transaction data with gas fee components
- **Logic**: Raw opBNB transaction data is processed to extract gas usage and pricing fields. Each transaction includes both Layer 2 execution costs and Layer 1 data availability costs typical of optimistic rollups. Key fields include `gas_used` for L2 execution, `l1_gas_used` for L1 data costs, corresponding price fields (`gas_price`, `l1_gas_price`), and the `l1_fee_scalar` multiplier. The native BNB token is identified with its contract address and symbol.
- **Key fields**: `block_timestamp`, `transaction_hash`, `gas_used`, `l1_gas_used`, `gas_price`, `l1_gas_price`, `l1_fee_scalar`, `token_address`, `token_symbol`

### Component B: Gas fee calculation  
- **Purpose**: Calculate total gas fees per transaction by combining L1 and L2 components
- **Logic**: For each transaction, Layer 2 gas fees are calculated by multiplying `gas_used` by `gas_price` and dividing by 1e18 to normalize decimals. Layer 1 gas fees are calculated by multiplying `l1_gas_used` by `l1_gas_price` and the `l1_fee_scalar`, then dividing by 1e18. The L1 fee scalar accounts for the cost of posting transaction data to Ethereum mainnet. Total transaction fees are the sum of L1 and L2 components.
- **Key fields**: `l2_gas_fee`, `l1_gas_fee`, `fees` (sum of both components)

### Component C: USD conversion and daily aggregation
- **Purpose**: Convert BNB fees to USD and aggregate by day
- **Logic**: Gas fees denominated in BNB are converted to USD using end-of-day WBNB price feeds. The conversion uses the WBNB contract address as the price reference since WBNB is the wrapped version of BNB used in DeFi markets. Transaction timestamps are truncated to daily boundaries, and all fees within each day are summed to produce daily totals.
- **Key fields**: `timestamp` (daily), `fees` (USD-denominated), `chain_id`, `product_id`

### Final aggregation
- **Combining components**: Daily gas fees are aggregated across all transactions on opBNB, with fees already converted to USD
- **Currency conversion**: USD conversion uses end-of-day WBNB price feeds, with decimal normalization applied during the gas fee calculation step
- **Time aggregation**: Data is aggregated to daily boundaries using timestamp truncation, with all transaction fees within each day summed together  
- **Final calculation**: Supply-side fees equal the total daily gas fees since opBNB does not implement fee burning mechanisms. The final value represents the sum of all L1 and L2 gas fees collected by the network, converted to USD and aggregated daily. Chain availability filters ensure data completeness across the reporting period.

*This methodology was automatically generated by Token Terminal's methodology analyzer.*

Portion of fees distributed to service providers or supply-side participants.

opBNB

Supply-side fees

Supply-side fees

Competitive landscape

Chain breakdown