Collators aggregate parachain transactions block candidates and producing state transition proofs for validators based on those blocks.

Kilt is digital identity solution powered by Polkadot Relay chain.

KILT holders own and govern the protocol.

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Kilt

# Kilt Fees Methodology

## 1. Overview

KILT fees represents the total transaction fees collected by the KILT blockchain on a daily basis, measured in USD. This metric captures the revenue generated by the KILT network through transaction processing fees and tips paid by users. The calculation aggregates all successful fee payments from KILT blockchain events, converts them to USD using market prices, and presents them as a daily time series. This metric answers the business question: "How much fee revenue does the KILT network generate per day?"

## 2. Data sources

The calculation relies on two primary data sources:
- **KILT blockchain events**: Parsed blockchain events from the KILT network, specifically focusing on `TransactionFeePaid` events that record fee payments for successful transactions. These events contain structured data about base transaction fees and optional tips paid by users.
- **End-of-day price feeds**: Token price data from CoinGecko API for the KILT token, using multiple token identifiers to ensure comprehensive price coverage across different market periods and token contract versions.

## 3. Step-by-step calculation

### Component A: Raw fee extraction
- **Purpose**: Extract and process individual fee payment events from KILT blockchain
- **Logic**: Filter KILT blockchain events to include only successful transactions with the `TransactionFeePaid` event method. Parse the structured event data to extract two fee components: the base transaction `amount` and the optional `tip`. Apply decimal normalization by dividing raw values by 1e15 to convert from the blockchain's native unit format to standard KILT token amounts. Include transaction identifiers like block timestamp, block number, and extrinsic hash for traceability.
- **Key fields**: `amount` (base transaction fee), `tip` (optional gratuity), `block_timestamp` (transaction timing), `extrinsic_hash` (transaction identifier)

### Component B: Daily aggregation
- **Purpose**: Aggregate individual fee payments into daily totals
- **Logic**: Group all fee events by day using timestamp truncation to daily boundaries. For each day, sum the total fees by adding the base `amount` and `tip` components for all transactions. Assign consistent metadata including chain identifier as 'kilt', product identifier as 'Kilt Chain', and timestamp grain as 'day'. This produces daily fee totals denominated in KILT tokens.
- **Key fields**: `timestamp` (daily boundary), `fees` (sum of amount + tip), `chain_id`, `product_id`

### Component C: USD conversion
- **Purpose**: Convert KILT token amounts to USD values using market prices
- **Logic**: Apply USD conversion using end-of-day price feeds from CoinGecko for the KILT token. Execute two separate price conversions using different CoinGecko token identifiers ('kilt-protocol-2' and 'kilt-protocol') to ensure complete price coverage, as token identifiers may change over time or have different availability periods. Combine results from both conversions using union operation to create a comprehensive dataset with maximum price coverage.
- **Key fields**: `fees` (converted to USD), `timestamp` (price date alignment)

### Final aggregation
- **Combining components**: Union the results from both USD conversion attempts to ensure maximum data coverage across different time periods and price feed availability
- **Currency conversion**: USD conversion occurs at the daily aggregation level using end-of-day prices matched to the transaction date, ensuring consistent valuation timing
- **Time aggregation**: Daily boundaries are established using timestamp truncation, with all transactions within a 24-hour period aggregated into a single daily value
- **Final calculation**: The final metric value represents the sum of all transaction fees (base amounts plus tips) collected by the KILT network on each day, converted to USD using market prices and standardized through the metric finalization process with fill-forward strategy for data continuity

*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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