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

Phala is a specialized privacy-preserving cloud computing blockchain powered by Polkadot Relay chain.

PHA holders own and govern the protocol. Phala’s investors include IOSG Ventures, Incuba Alpha, Candaq Fintech Group, and others.

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Phala

# Phala Fees Methodology

## 1. Overview

Phala fees represents the total transaction fees collected by the Phala network on a daily basis, measured in USD. This metric captures the revenue generated from users paying for transaction processing on the Phala blockchain. The calculation involves extracting transaction payment events from Phala blockchain logs, parsing fee data from event payloads, converting from native PHA token units to USD, and aggregating by day.

## 2. Data sources

- **Blockchain events**: Phala blockchain event logs containing transaction processing and payment events
- **External data**: End-of-day price feeds for PHA token from CoinGecko API
- **Token metadata**: PHA token configuration including decimal precision and market identifiers

## 3. Step-by-step calculation

### Component A: Raw event extraction
- **Purpose**: Extract and filter relevant transaction payment events from Phala blockchain
- **Logic**: Pull all Phala blockchain events and filter to daily timestamps. Events are partitioned by day and processed incrementally. Filter specifically for events from the `transactionPayment` pallet with method `TransactionFeePaid`, which represent completed fee payments for processed transactions.
- **Key fields**: `timestamp`, `event_pallet`, `event_method`, `event_data`, `extrinsic_id`

### Component B: Fee data parsing and calculation
- **Purpose**: Extract fee amounts from event data and calculate total transaction fees
- **Logic**: Parse the `event_data` JSON array to extract fee components. The `transaction_fee` is found at index 1 and `transaction_tip` at index 2 of the event data array. Sum these two components to get the total fee paid per transaction. Convert from the smallest blockchain unit by dividing by 10^12 (Phala uses 12 decimal places) to get values in PHA token units.
- **Key fields**: `transaction_fee`, `transaction_tip`, `extrinsic_id`, total calculated as `transaction_fee + transaction_tip`

### Component C: USD conversion and final formatting
- **Purpose**: Convert PHA token amounts to USD and apply final metric structure
- **Logic**: Apply USD conversion using end-of-day PHA token price feeds from CoinGecko. The conversion uses the `convert_to_usd_cg` macro with the `coingecko_id` set to 'pha'. Apply final metric formatting including market sector classification as 'blockchains_l1' and business segment as 'blockchain'. Set timestamp grain to 'day' for daily aggregation.
- **Key fields**: `fees` (in USD), `daily_timestamp`, `chain_id`, `coingecko_id`

### Final aggregation
- **Combining components**: Fee amounts are summed at the daily level, with all transactions for a given day contributing to the total daily fees
- **Currency conversion**: PHA token amounts are converted to USD using end-of-day price feeds, ensuring consistent daily pricing
- **Time aggregation**: Transactions are grouped by daily timestamps (truncated to day boundaries) to produce daily fee totals
- **Final calculation**: The final metric represents the sum of all transaction fees and tips paid on the Phala network for each day, converted to USD at end-of-day exchange rates

*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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