# Katana Perps Fees Methodology

## 1. Overview

Fees for Katana Perps are calculated as the total economic value paid by traders to execute perpetual contracts. These fees are composed of maker and taker fees charged during trade executions across V1 and V2 of the protocol. The metric is utilized to assess trading activity, user demand, and the economic value generated by the perpetual exchange. All fee amounts are normalized and converted to USD to provide a standardized measure of platform activity.

## 2. Data sources

- **Blockchain events**: `TradeExecuted` events from `Exchange` contracts on Katana Chain, covering V1 and V2 of the protocol

## 3. Step-by-step calculation

### Component A: Trade fee extraction

- **Purpose**: The extraction of maker and taker fees from individual trade execution events
- **Logic**: `TradeExecuted` events are parsed from V1 and V2 `Exchange` contracts. For each event, the maker fee and taker fee are extracted from the `makerFeeQuantity` and `takerFeeQuantity` fields, respectively. These raw values are normalized by decimal precision to determine the fee amounts in USD.
- **Key fields**: `makerFeeQuantity`, `takerFeeQuantity`, `block_timestamp`

### Component B: Daily aggregation

- **Purpose**: The aggregation of trade fees to a daily granularity
- **Logic**: The extracted maker and taker fees are summed for each transaction. These transaction-level fees are then aggregated by day using UTC boundaries. The daily totals are mapped to the Katana Perps product identifier and the Katana Chain identifier.
- **Key fields**: `fees` (sum of maker and taker fees), `timestamp` (daily truncated block timestamp)

*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

Derivative exchanges

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 Perps

Fees

Fees

Chain breakdown