# Active users (monthly) Methodology

## 1. Overview

Active users (monthly) measures the number of unique addresses that initiate revenue-generating transactions on Polkadot BridgeHub. This metric serves as an indicator of user engagement with Polkadot’s cross-chain bridging infrastructure. Every transaction signed and submitted to the network as an extrinsic is considered in this measurement to identify active participants within a 30-day rolling window.

## 2. Data sources

- **Blockchain events**: `extrinsics` from Polkadot BridgeHub

## 3. Step-by-step calculation

### Component A: Polkadot BridgeHub extrinsic extraction

- **Purpose**: Identify transaction signers on the Polkadot BridgeHub chain.
- **Logic**: Extrinsics are retrieved from the Polkadot BridgeHub chain records. The identifier for the transaction sender is extracted and cast as the user address. Each entry is associated with a specific block timestamp and a unique transaction hash to facilitate monthly aggregation.
- **Key fields**: `block_timestamp`, `user_address` (derived from the extrinsic sender), and `transaction_hash`.

### Component B: Monthly aggregation and deduplication

- **Purpose**: Calculate the number of unique active users per 30-day window.
- **Logic**: User addresses are grouped by monthly granularity using a 30-day rolling window. Within each 30-day window, unique addresses are identified to ensure that each user is counted only once per 30-day window regardless of the number of extrinsics submitted. The final count represents the active users (monthly) for the product.

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

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

Active users (monthly)

Blockchains (L2)

Network participants process transactions and receive fees from users (supply-side fees).

Polkadot is a security & interoperability platform for blockchains and applications. Polkadot was founded by Gavin Wood and launched in 2020.

DOT holders own and govern the protocol. They currently take a cut of the total transaction fees paid by users (revenue). Polkadot’s investors include Polychain, IOSG Ventures, Hashkey, etc.

Polkadot BridgeHub

Active users (monthly)

Active users (monthly)

Chain breakdown