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

Hydration is a Polkadot parachain specialized in trading, lending, and stablecoin issuance.

HDX holders own and govern the protocol. Hydration’s investors include KR1 plc, Hypersphere, etc.

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Hydration

# Hydration Average transaction fee Methodology

## 1. Overview

Average transaction fee measures the average fee users pay per transaction across Hydration. It reflects the typical cost of interacting with the network's various components, including Hydration Substrate and Hydration EVM. This metric is used to evaluate the network's cost-efficiency and is calculated by dividing the total daily fees by the total number of transactions processed.

## 2. Data sources

- **Blockchain events**: `TransactionFeePaid` and `Executed` events, and extrinsics from Hydration Substrate and Hydration EVM
- **External data**: End-of-day price feeds for native assets

## 3. Step-by-step calculation

### Component A: Fee extraction and USD conversion

- **Purpose**: Calculate the total daily fees paid by users in USD
- **Logic**: `TransactionFeePaid` events are parsed to extract both base fee amounts and optional tips. These values are normalized by decimal precision and aggregated by day. Daily totals are then converted to USD using end-of-day price feeds for the native asset.
- **Key fields**: `amount`, `tip`, `block_timestamp`

### Component B: Transaction count aggregation

- **Purpose**: Determine the total volume of transactions across the network
- **Logic**: For Hydration Substrate, unique extrinsic IDs are counted to establish the number of Substrate-native transactions. For Hydration EVM, `Executed` events from the `ethereum` pallet are captured and aggregated. These counts are combined to provide a comprehensive total of all transactions processed on the network.
- **Key fields**: `extrinsic_id`, `event_method`, `event_pallet`

### Component C: Average fee calculation

- **Purpose**: Compute the final average transaction fee metric
- **Logic**: The total daily fee volume in USD is divided by the total daily transaction count. This calculation provides the average cost per transaction. A zero-filling strategy is applied to ensure data continuity for days where no transaction activity is recorded.
- **Key fields**: `fees`, `transaction_count`

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

HydrationHDX

Average transaction fee

Average transaction fee

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