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.

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opBNB

# opBNB Earnings Methodology

## 1. Overview

The opBNB earnings metric represents the net profit generated by the opBNB Layer 2 blockchain network. It measures the financial performance by calculating the difference between revenue (gas fees collected from users) and expenses (primarily Layer 1 settlement costs paid to BSC). This metric answers the business question: "How profitable is the opBNB network after accounting for its operational costs?"

The general approach subtracts total expenses from total revenue on a daily basis, where revenue comes from transaction fees collected on opBNB and expenses primarily consist of settlement costs paid on the Binance Smart Chain (BSC) for data availability and sequencing operations.

## 2. Data sources

The calculation uses several key data sources:

- **opBNB blockchain transaction data**: Complete transaction records from the opBNB network including gas usage, gas prices, and Layer 1 fee components for each transaction
- **BSC transaction data**: Binance Smart Chain transaction records specifically for the opBNB sequencer address to capture settlement costs
- **End-of-day token price feeds**: BNB token prices for converting native token amounts to USD equivalents
- **Token metadata**: BNB token information including decimal precision and symbol definitions

## 3. Step-by-step calculation

### Component A: Revenue calculation
- **Purpose**: Calculates total revenue from gas fees collected on the opBNB network
- **Logic**: Extracts all transactions from opBNB blockchain data and calculates two types of gas fees. For Layer 2 fees, multiplies `gas_used` by `gas_price` and divides by 1e18 to adjust for decimal precision. For Layer 1 fees, multiplies `l1_gas_used` by `l1_gas_price` and `l1_fee_scalar`, then divides by 1e18. Sums both fee components for each transaction to get total transaction revenue. Converts amounts to USD using end-of-day BNB price feeds and aggregates by day using timestamp truncation.
- **Key fields**: `gas_used`, `gas_price`, `l1_gas_used`, `l1_gas_price`, `l1_fee_scalar`, `block_timestamp`, `token_address` (0x4200000000000000000000000000000000000006 representing BNB on opBNB)

### Component B: Cost of revenue calculation  
- **Purpose**: Calculates Layer 1 settlement costs paid by opBNB to BSC
- **Logic**: Filters BSC transaction data for transactions sent to the opBNB sequencer address `0xff00000000000000000000000000000000000204`. For each settlement transaction, calculates total gas costs by multiplying `gas_used` by `gas_price`, adds any blob gas costs by multiplying `blob_gas_used` by `blob_gas_price`, and divides the sum by 1e18 for decimal adjustment. Converts amounts to USD using end-of-day BNB price feeds on BSC and aggregates daily.
- **Key fields**: `gas_used`, `gas_price`, `blob_gas_used`, `blob_gas_price`, `block_timestamp`, `to_address` (filtered to sequencer address), `token_address` (0xbb4cdb9cbd36b01bd1cbaebf2de08d9173bc095c representing wrapped BNB on BSC)

### Component C: Token incentives
- **Purpose**: Accounts for any token-based rewards or incentives paid to users
- **Logic**: For opBNB, token incentives are set to zero as the network does not currently provide token-based rewards. This component ensures the expense calculation framework can accommodate token incentives if implemented in the future.
- **Key fields**: `token_incentives` (always zero for opBNB)

### Final aggregation
- **Combining components**: Total expenses are calculated by summing cost of revenue and token incentives for each day. Revenue is already calculated as a daily aggregate from the gas fee components.
- **Currency conversion**: All native BNB amounts are converted to USD using end-of-day price feeds. Decimal precision is standardized by dividing raw values by 1e18 for BNB's 18-decimal format.
- **Time aggregation**: All data is aggregated to daily boundaries using timestamp truncation to the day level. Missing days are filled with zeros using a forward-fill strategy.
- **Final calculation**: Daily earnings equals daily revenue minus daily expenses. The formula is: Earnings = (L1 gas fees + L2 gas fees) - (L1 settlement costs + token incentives). Since token incentives are zero, this simplifies to: Earnings = Total gas fees collected - BSC settlement costs paid.

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

Net profit (also profits, net income, profitability) — revenue remaining after subtracting expenses.

opBNB

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