# Fathom DEX Tradeable assets Methodology

## 1. Overview

Tradeable assets is defined as the total number of unique assets available for trading on Fathom DEX. The breadth of token coverage within the protocol is reflected by this metric, which captures the variety of assets supported across all decentralized exchange liquidity pools. A cumulative count is maintained to provide a historical view of the growth and expansion of the supported asset base.

## 2. Data sources

- **Blockchain events**: `PairCreated` events from `Factory` contracts on XDC

## 3. Step-by-step calculation

### Component A: Trading pair identification

- **Purpose**: Identify unique assets integrated into the protocol liquidity pools.
- **Logic**: `PairCreated` events are parsed from `Factory` contracts to identify every trading pair deployed on the exchange. The contract addresses for both constituent assets (asset 0 and asset 1) are extracted from these events to establish the full universe of tradeable assets.
- **Key fields**: `token0_address` and `token1_address` for asset identification.

### Component B: Initial listing discovery

- **Purpose**: Determine the date each asset first became available for trading.
- **Logic**: The earliest block timestamp associated with each unique asset address is identified across all extracted trading pairs. Each asset is then assigned to the specific UTC day corresponding to its first appearance on the protocol.

### Component C: Cumulative aggregation

- **Purpose**: Calculate the growth of tradeable assets as a time series.
- **Logic**: The number of new assets introduced is aggregated on a daily basis. A running sum is calculated over these daily counts to produce a cumulative total of tradeable assets. Missing days are accounted for using zero-filling to ensure a continuous daily time series. All calculations are performed with UTC day boundaries.

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

Number of unique tokens tradeable on the exchange.

Tradeable assets

Exchanges (DEX)