Fraxtal batches users' transactions and submits them to Ethereum, paying a share of the transaction fees to Ethereum validators (expense).

Fraxtal is an Ethereum Layer 2 (L2) blockchain built on the OP Stack by Frax Finance. It uses frxETH as the gas token and features a blockspace incentive system called Flox. Fraxtal launched in February 2024.

Frax Finance team owns and governs the protocol. Frax Finance's investors include Dragonfly Capital, Mechanism Capital, Galaxy Digital, etc.

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Fraxtal

# Fraxtal Median transaction fee Methodology

## 1. Overview

Median transaction fee measures the median fee paid across all transactions on Fraxtal. This metric represents the typical cost incurred by a user for a single transaction, providing a more accurate reflection of standard user experience than a mean average, which can be skewed by complex, high-gas interactions. Fees are composed of both Layer 2 execution costs and Layer 1 data availability costs.

## 2. Data sources

- **Blockchain events**: Transaction-level records from the Fraxtal network, covering Fraxtal
- **External data**: End-of-day price feeds for native gas assets and asset metadata

## 3. Step-by-step calculation

### Component A: Transaction fee extraction

- **Purpose**: Calculate the total fee for every individual transaction in the native gas asset
- **Logic**: For each transaction, the total fee is calculated as the sum of the Layer 2 execution fee and the Layer 1 security fee. The Layer 2 fee is derived by multiplying `gas_used` by the `gas_price`. The Layer 1 fee is calculated by multiplying `l1_gas_used`, `l1_gas_price`, and the `l1_fee_scalar`. Both components are summed and normalized by decimal precision.
- **Key fields**: `gas_used`, `gas_price`, `l1_gas_used`, `l1_gas_price`, and `l1_fee_scalar`

### Component B: Median fee determination

- **Purpose**: Identify the 50th percentile fee value to represent the typical transaction cost
- **Logic**: Individual transaction fees are grouped by day. An approximate quantile function is applied to the distribution of fees for each daily period to extract the value at the 50th percentile. This ensures the metric reflects the fee paid by the typical user without being influenced by outliers.

### Component C: Native asset identification and USD conversion

- **Purpose**: Assign the correct asset price for USD normalization based on network hardforks
- **Logic**: The native gas asset is identified based on the transaction timestamp relative to the North Star hardfork. For transactions occurring before April 29, 2025, frxETH is identified as the native gas asset. For transactions occurring after this timestamp, FRAX is identified as the native gas asset. The daily median values are then multiplied by the corresponding end-of-day price for the identified asset to produce the final USD-denominated metric.

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

FraxtalFXTL

Median transaction fee

Median transaction fee

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