The Robonomics chain is a parachain in the Polkadot and Kusama ecosystems designed to provide a decentralized infrastructure for the Internet of Things (IoT) and cyber-physical systems.

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Blockchains (L2)

Robonomics Network

# Robonomics Network Fees Methodology

## 1. Overview

The Robonomics fees metric measures the total daily transaction fees paid on the Robonomics network, expressed in USD. This metric captures both base transaction fees and optional tips paid by users when executing transactions on the Robonomics blockchain. The calculation aggregates all fee payments from `TransactionFeePaid` events and converts them to USD using end-of-day price feeds.

## 2. Data sources

- **Robonomics blockchain events**: Parsed `TransactionFeePaid` events from the Robonomics network containing fee and tip amounts
- **External price data**: End-of-day price feeds from CoinGecko for the Robonomics Network token (token ID: robonomics-network)

## 3. Step-by-step calculation

### Component A: Raw fee extraction
- **Purpose**: Extract and normalize transaction fee data from Robonomics blockchain events
- **Logic**: Filter Robonomics blockchain events for `TransactionFeePaid` events, which are emitted whenever a transaction fee is paid. Parse the event data JSON array to extract the base transaction `amount` (at array position 1) and optional `tip` (at array position 2). Convert both values from native blockchain decimals (1e9 units) to human-readable format by dividing by the Robonomics decimals constant. Include transaction metadata like `block_timestamp`, `block_number`, `extrinsic_hash`, and `event_index` for traceability.
- **Key fields**: `amount` (base transaction fee), `tip` (optional additional payment), `block_timestamp` (when the transaction occurred), `extrinsic_hash` (transaction identifier)

### Component B: Daily aggregation and USD conversion
- **Purpose**: Aggregate fees by day and convert to USD values
- **Logic**: Truncate transaction timestamps to daily boundaries and group all transactions by day. Sum the total fees for each day by adding `amount` and `tip` for each transaction. Apply USD conversion using end-of-day token prices from CoinGecko for the Robonomics Network token, matching the aggregation date to the corresponding price feed date.
- **Key fields**: `timestamp` (daily boundary), `chain_id` ('robonomics'), `product_id` ('Robonomics Substrate'), `fees` (total daily fees in USD)

### Final aggregation
- **Combining components**: The daily aggregated USD fees flow directly from the intermediate calculation
- **Currency conversion**: USD conversion is applied at the daily aggregation level using CoinGecko end-of-day prices for the Robonomics Network token
- **Time aggregation**: Data is aggregated to daily boundaries using timestamp truncation to day
- **Final calculation**: Apply the finalize_metric_fees macro with a 'fill_zeros' strategy to handle missing days by inserting zero values, ensuring continuous daily time series data. Apply chain availability filtering to ensure data quality standards are met.

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

Total value users pay to use a protocol (gross fees, user-paid fees).

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