The network uses pessimistic proofs via the AgglayerGateway for settlement on Ethereum, with vault bridges for cross-chain asset transfers.

Katana Network provides a scalable execution environment connected to Ethereum through the Agglayer interoperability layer.

Katana Network is a Layer 2 blockchain built on the Agglayer ecosystem.

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Blockchains (L2)

Katana

# Katana Average transaction fee Methodology

## 1. Overview

Average transaction fee measures the average fee paid by users per transaction on Katana Chain. The typical cost of network utilization is represented by this metric, which incorporates Layer 2 execution fees, Layer 1 settlement fees, and operator fees. Other revenue-generating products, including Katana Perps, Katana Vault Bridge, Katana AUSD Yield, and vKAT, are excluded from this calculation to isolate network-level transaction costs.

## 2. Data sources

- **Blockchain events**: Transaction execution records, including gas usage, gas prices, Layer 1 fee parameters, and operator fee parameters, covering Katana Chain
- **External data**: End-of-day price feeds for the native gas asset (ETH)

## 3. Step-by-step calculation

### Component A: Gas fee extraction and calculation

- **Purpose**: Calculation of the total gas fees paid for transactions on Katana Chain.
- **Logic**: Transaction records are parsed to extract gas used, gas price, Layer 1 gas parameters, and operator fee parameters. Layer 2 execution fees are calculated by multiplying gas used by the effective gas price. Layer 1 settlement fees are calculated using either the direct Layer 1 fee or by multiplying Layer 1 gas used, Layer 1 gas price, and the Layer 1 fee scalar. Operator fees are calculated by adding the constant operator fee to the product of gas used and the operator fee scalar. These three components (Layer 2 gas fees, Layer 1 gas fees, and operator fees) are summed to determine the total transaction fees in native gas asset units. Amounts are normalized by decimal precision.
- **Key fields**: `gas_used`, `gas_price`, `l1_fee`, `l1_gas_used`, `l1_gas_price`, `l1_fee_scalar`, `operator_fee_constant`, `operator_fee_scalar`

### Component B: Transaction count aggregation

- **Purpose**: Determination of the total number of transactions executed on Katana Chain.
- **Logic**: Unique transaction hashes are aggregated daily to calculate the total daily transaction count for Katana Chain.
- **Key fields**: `transaction_hash`

### Component C: Average fee calculation and USD conversion

- **Purpose**: Calculation of the average transaction fee and conversion of the value to USD.
- **Logic**: Total daily transaction fees are divided by the daily transaction count to compute the average transaction fee in native gas asset units. The resulting average fee is multiplied by the end-of-day price of the native gas asset (ETH) to convert the metric into USD.
- **Key fields**: `fees`, `transaction_count`

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

KatanaKAT

Average transaction fee

Average transaction fee

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