# X Layer Fees Methodology

## 1. Overview

Fees are measured as the total value paid by users to execute transactions on X Layer. The total economic value generated by the network is represented by this metric, which encompasses both L2 execution fees and L1 data availability fees. Transaction fees on X Layer are paid using the OKB asset. These fees are collected to cover L2 execution costs and the security costs associated with posting transaction data to the Ethereum mainnet.

## 2. Data sources

- **Blockchain events**: Transaction execution data, including gas usage and gas price parameters, parsed from transactions covering X Layer
- **External data**: End-of-day price feeds for the OKB asset

## 3. Step-by-step calculation

### Component A: L2 execution fee calculation

- **Purpose**: Calculate the execution fees generated on the L2 network
- **Logic**: Gas used is multiplied by the gas price for each transaction. The resulting values are aggregated daily and normalized by the decimal precision of the OKB asset.
- **Key fields**: `gas_used`, `gas_price`

### Component B: L1 data fee calculation

- **Purpose**: Calculate the data availability fees paid to post transaction data to L1
- **Logic**: The L1 fee is determined by extracting the L1 fee directly, or alternatively calculated by multiplying the L1 gas used by the L1 gas price and the L1 fee scalar. These values are coalesced to ensure completeness, aggregated daily, and normalized by the decimal precision of the OKB asset.
- **Key fields**: `l1_fee`, `l1_gas_used`, `l1_gas_price`, `l1_fee_scalar`

### Component C: Total fee aggregation and USD conversion

- **Purpose**: Combine L1 and L2 fee components and convert the total to USD
- **Logic**: The daily L2 execution fees and L1 data fees are summed to calculate the total transaction fees. The aggregated fees are then multiplied by the end-of-day price of the OKB asset to determine the final fee value in USD.
- **Key fields**: `fees`, `price_usd`

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

Total value users pay to use a protocol (gross fees, user-paid fees).

Fees

X Layer

Fees

Fees

Chain breakdown