twitter

etherscan

website

Blockchains (L2)

Unichain

# Unichain Superchain fees Methodology

## 1. Overview

Unichain Superchain fees represent the portion of transaction fees collected on the Unichain network that are allocated to the Superchain ecosystem. This metric captures the daily USD value of fees distributed to the Superchain through Unichain's fee splitting mechanism. It answers the business question: "How much revenue does the Superchain generate from Unichain's transaction activity?" The calculation extracts fee distribution events from Unichain's smart contracts, isolates the Superchain-allocated portion, and converts it to USD for standardized reporting.

## 2. Data sources

- **Blockchain events**: Parsed Unichain `FeesDistributed` events emitted by the fee splitter smart contract
- **Transaction data**: Unichain blockchain transaction logs containing fee distribution events
- **External data**: End-of-day ETH price feeds for USD conversion
- **Contract data**: Hardcoded WETH contract address (`0x4200000000000000000000000000000000000006`) used as the token identifier

## 3. Step-by-step calculation

### Component A: Fee distribution event extraction
- **Purpose**: Extract and process fee distribution events from Unichain's fee splitter contract
- **Logic**: The calculation starts by querying parsed `FeesDistributed` events from Unichain's fee splitter smart contract. These events are emitted whenever transaction fees are distributed among different parties. Each event contains multiple fee components including `optimismShare` (fees allocated to the Superchain), `l1Fees` (Layer 1 gas costs), and `netShare` (remaining fees). The model filters for distinct events to avoid duplicates and extracts key transaction metadata including block timestamp, block number, transaction hash, and log index. The contract address is captured as the `account_address`, and the token is standardized as WETH using the hardcoded address `0x4200000000000000000000000000000000000006`.
- **Key fields**: `optimismShare` represents the raw fee amount allocated to Superchain in wei, `block_timestamp` provides event timing, `token_address` identifies the fee token as WETH

### Component B: Fee amount processing and conversion
- **Purpose**: Convert raw fee amounts from blockchain format to standardized units and apply USD conversion
- **Logic**: The raw `optimismShare` amount is extracted and converted from wei to ETH by dividing by 10^18, as fees are denominated in ETH but stored in wei format on the blockchain. The converted amount becomes the `superchain_fees` field representing the ETH value of fees allocated to the Superchain. Block timestamps are truncated to day boundaries to enable daily aggregation. Standard metadata is applied including chain identifier ('unichain'), market sector ('blockchains_l2'), and business segment ('blockchain'). The USD conversion is performed using end-of-day ETH price feeds through the `convert_to_usd_and_correct_decimals` macro, which applies current price data to convert ETH amounts to USD values.
- **Key fields**: `superchain_fees` contains the ETH amount after wei conversion, `timestamp` provides daily boundary for aggregation

### Final aggregation
- **Combining components**: The fee extraction and conversion components flow sequentially, with fee distribution events first processed into ETH amounts, then converted to USD values
- **Currency conversion**: USD conversion uses end-of-day ETH price feeds applied to the calculated ETH fee amounts, with the conversion handled by the standard pricing macro
- **Time aggregation**: Daily boundaries are established by truncating block timestamps to day level, ensuring consistent daily reporting periods
- **Final calculation**: The final metric represents the total USD value of transaction fees collected on Unichain that are allocated to the Superchain network, aggregated by day. The calculation applies superchain-specific business logic through the finalization macro, including zero-filling for days with no fee distributions and validation of data completeness. Chain availability filters ensure only valid date ranges are included in the final output.

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

Fees paid by Superchains to the OP Collective.

UnichainUNI

Superchain fees

Superchain fees

Competitive landscape

Chain breakdown