Collators process transactions and receive payments from Acala Foundation.

Karura is a smart contract platform for decentralized applications (a blockchain). Karura was founded by Bett Chen, Bryan Chen, Ruitao Su & Fuyao Jiang and launched in 2021.

KAR holders own and govern the protocol. They currently take all of the total transaction fees paid by users (revenue).

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Karura

# Karura Supply-side fees Methodology

## 1. Overview

Supply-side fees represent the portion of total protocol fees that are distributed to supply-side participants (such as liquidity providers, validators, or stakers) as rewards for their contributions to the protocol. For Karura, this metric is consistently zero, indicating that the protocol operates on a model where all collected fees are retained by the protocol rather than being shared with supply-side participants. This calculation determines daily supply-side fee revenue in USD for Karura blockchain operations.

## 2. Data sources

The calculation relies on these underlying data sources:
- **Karura blockchain fee data**: Daily fee collection records from Karura blockchain, captured through Token Terminal's internal scraping infrastructure
- **End-of-day price feeds**: CoinGecko price data for KAR token to enable USD conversion of native fee amounts  
- **Token metadata**: KAR token specifications including 12-decimal precision and CoinGecko identifier mapping
- **Chain availability data**: Operational status data for Karura blockchain to filter results to active periods

## 3. Step-by-step calculation

### Component A: Raw fee data extraction
- **Purpose**: Extracts and normalizes daily fee collection amounts from Karura blockchain
- **Logic**: Daily fee totals are retrieved from Karura blockchain scraper data, capturing the `balance_amount_total` field which represents total fees collected. These raw amounts are converted from native KAR units to decimal format by dividing by 10^12 to account for KAR token's 12-decimal precision. Each record is tagged with chain identifier 'karura', token symbol 'KAR', and CoinGecko identifier 'karura' for downstream processing
- **Key fields**: `balance_amount_total` (raw fee amount), `daily_timestamp` (collection date), `chain` (karura), `token_symbol` (KAR)

### Component B: USD conversion and categorization  
- **Purpose**: Converts native KAR fee amounts to USD and applies business categorization
- **Logic**: Native KAR fee amounts are converted to USD using end-of-day CoinGecko price feeds for the 'karura' token identifier. Each fee record is categorized with business_line as 'Blockchain', market_sector_id as 'blockchains_l1', and business_segment_id as 'blockchain' to properly classify the revenue within Token Terminal's taxonomy
- **Key fields**: `fees` (USD-converted amount), `market_sector_id`, `business_segment_id`, `coingecko_id`

### Component C: Supply-side allocation logic
- **Purpose**: Determines the portion of total fees allocated to supply-side participants
- **Logic**: For Karura specifically, all supply-side fees are hardcoded to 0. This reflects Karura's fee structure where collected fees are retained entirely by the protocol rather than being distributed to liquidity providers, validators, or other supply-side participants. The base total fees are calculated and converted to USD, but the supply-side portion is explicitly set to zero
- **Key fields**: `fees_supply_side` (always 0), `timestamp`, `chain_id`

### Final aggregation
- **Combining components**: The supply-side fee allocation (zero) is combined with metadata from the fee extraction and USD conversion components to create complete daily records
- **Currency conversion**: All amounts are expressed in USD using end-of-day CoinGecko prices for the KAR token, with no additional currency transformations needed since supply-side amounts are zero
- **Time aggregation**: Data is aggregated at daily boundaries using the `daily_timestamp` from the source fee collection data, with `timestamp_grain` set to 'day'
- **Final calculation**: The final supply-side fees value is consistently 0 USD for all days, reflecting Karura's protocol design where fees are not shared with supply-side participants. Records are validated through finalization macros that ensure proper schema adherence, fill any missing dates with zero values, and apply chain availability filtering to include only periods when Karura blockchain was operational

*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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