# Fathom DEX Trade count Methodology

## 1. Overview

Trade count measures the number of trades executed on Fathom DEX. It shows how frequently users are buying or selling assets through the project's decentralized exchange infrastructure. This metric provides insight into the transaction activity and liquidity utilization of Fathom DEX liquidity pools.

## 2. Data sources

- **Blockchain events**: `Swap` events from `Pair` contracts and `PairCreated` events from `Factory` contracts, covering the XDC chain

## 3. Step-by-step calculation

### Component A: Swap event extraction

- **Purpose**: To identify and capture all asset exchange activities within the protocol.
- **Logic**: `Swap` events are parsed from `Pair` contracts deployed on the XDC chain. These events represent individual exchange operations where one asset is traded for another within a liquidity pool. For each event, the transaction hash, log index, and contract address are extracted to uniquely identify the trade and the associated trading pair.

### Component B: Trading pair identification

- **Purpose**: To map trade events to specific liquidity pools and asset pairs.
- **Logic**: `PairCreated` events from `Factory` contracts are used to identify valid trading accounts. These events provide the addresses for `token0` and `token1` within each pool. This metadata is joined with the extracted `Swap` events to ensure only trades occurring within verified Fathom DEX liquidity pools are included in the calculation.

### Component C: Trade deduplication and aggregation

- **Purpose**: To calculate the total volume of unique trading transactions per day.
- **Logic**: Trade events are filtered to ensure only those associated with the Fathom DEX product ID are processed. The number of distinct transaction hashes is counted to determine the total trade count, ensuring that transactions containing multiple swaps are treated as a single trade event. Results are aggregated at a daily granularity using UTC day boundaries, with a zero-filling strategy applied to days where no trading activity is recorded.

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

Number of trades executed on a decentralized exchange.

Trade count

Exchanges (DEX)