# Active users (monthly) Methodology

## 1. Overview

Active users (monthly) measures the number of unique addresses that make a revenue-generating transaction with Fathom Lending. This metric captures individual interactions with the protocol's lending and borrowing features, including liquidity provision, debt management, and flash loans. It serves as a primary indicator of user adoption and protocol utility for Fathom Lending.

## 2. Data sources

- **Blockchain events**: `Supply`, `Withdraw`, `Borrow`, `FlashLoan`, and `Repay` events from `LendingPool` contracts, covering XDC

## 3. Step-by-step calculation

### Component A: Fathom Lending activity extraction

- **Purpose**: Identify unique user addresses participating in lending activities
- **Logic**: User addresses are extracted from core protocol events emitted by `LendingPool` contracts. For `Supply`, `Withdraw`, `Borrow`, and `Repay` events, the address is retrieved from the `user` field. For `FlashLoan` events, the address is retrieved from the `initiator` field. Each extracted address is associated with the transaction timestamp and chain.
- **Key fields**: `user`, `initiator`, `block_timestamp`

### Component B: Monthly aggregation

- **Purpose**: Calculate the final count of unique monthly participants
- **Logic**: Extracted addresses are aggregated using a 30-day rolling window. Within each 30-day rolling window, duplicate addresses are removed to ensure each user is counted only once per 30-day window regardless of the number of transactions performed. The final metric is produced as a distinct count of addresses per 30-day window and chain.
- **Key fields**: `user_address`, `block_timestamp`

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

Unique revenue-generating users over a rolling 30-day window.

Active users (monthly)

Lending