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

Acala is a specialized stablecoin and liquidity blockchain powered by Polkadot Relay chain.

ACA holders own and govern the protocol. Acala’s investors include Pantera Capital, Coinbase Ventures, and Polychain Capital.

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Acala Network

# Acala Network Supply-side fees Methodology

## 1. Overview

This metric calculates supply-side fees earned on the Acala DEX, representing fees that go directly to liquidity providers. The metric applies a fixed 0.3% fee rate to the total USD trading volume on the Acala decentralized exchange. This provides a measure of the revenue generated for liquidity providers from trading activity on the platform.

## 2. Data sources

- **Acala blockchain events**: Raw `Swap` events from the `dex` pallet on the Acala blockchain, containing trader addresses, token pairs, and transaction amounts
- **Token metadata**: Acala chain configuration data containing token symbols, decimal places, and asset identifiers for proper amount conversion
- **End-of-day price feeds**: CoinGecko daily market data providing USD prices for supported tokens
- **Token mapping data**: Hardcoded mappings between Acala token symbols and CoinGecko asset IDs to enable price lookups

## 3. Step-by-step calculation

### Component A: Swap event extraction and parsing
- **Purpose**: Extract and normalize raw trading data from Acala blockchain events
- **Logic**: Filter for successful `Swap` events from the `dex` pallet on the Acala blockchain. Extract trader addresses, input and output token identifiers, and amounts from the event data. Parse complex JSON token structures (handling `Token`, `LiquidCrowdloan`, `ForeignAssetId`, and `Erc20` token types) into standardized formats. Join with token metadata to obtain human-readable symbols and decimal precision for each token.
- **Key fields**: `trader` (account address), `amount_in` and `amount_out` (raw blockchain integers), `asset_in` and `asset_out` (token symbols), `decimals_in` and `decimals_out` (decimal places for conversion)

### Component B: Volume calculation and USD conversion
- **Purpose**: Convert raw swap amounts to USD values and aggregate daily trading volume
- **Logic**: Convert raw amount integers to actual token amounts by dividing by 10 raised to the token's decimal places. Map token symbols to CoinGecko IDs using hardcoded mappings for tokens like DOT, AUSD, ACA, USDT, and others. Join with end-of-day CoinGecko price data to get USD prices for each token. Multiply token amounts by USD prices to get USD values. Aggregate by day, grouping swaps and summing volumes. Use the higher of the two token values (input or output) as the trading volume for each swap.
- **Key fields**: `trading_volume` (USD value of trades), `timestamp` (daily aggregation boundary), `token0_amount` and `token1_amount` (USD values)

### Component C: Fee calculation
- **Purpose**: Apply the DEX fee rate to calculate supply-side fees
- **Logic**: Apply a fixed 0.3% fee rate to the calculated USD trading volume. This represents the fee that goes to liquidity providers on the Acala DEX.
- **Key fields**: `fees` (0.3% of trading volume in USD)

### Final aggregation
- **Combining components**: The fee calculation takes the daily USD trading volume and multiplies by 0.03 (3%) to get the supply-side fees
- **Currency conversion**: USD conversion happens before fee calculation using end-of-day CoinGecko prices matched to the trade date
- **Time aggregation**: Data is aggregated at daily boundaries using timestamp truncation to day level
- **Final calculation**: Supply-side fees equals 0.3% of daily USD trading volume on the Acala DEX, representing fees earned by liquidity providers

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

Portion of fees distributed to service providers or supply-side participants.

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Supply-side fees

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