Liquidity providers deposit funds into Mummy Finance and receive trading fees from traders (supply-side fees).

Mummy Finance is a non-custodial exchange for spot and perpetual contracts built on Fantom, Optimism, and Arbitrum. Mummy Finance was founded by an anonymous team and was launched in December 2022.

MMY tokenholders own and govern the protocol. They currently take a cut of the total trading fees paid by traders (revenue).

github

twitter

discord

etherscan

website

Derivative exchanges

Mummy Finance

# Mummy Finance Supply-side fees Methodology

## 1. Overview

Supply-side fees represent the portion of trading fees that goes to liquidity providers rather than the protocol itself. For Mummy Finance, this metric calculates 60% of total trading fees (both perpetual and spot), as the protocol retains 40% as revenue. This metric helps track the value accrued to liquidity providers who supply capital to the platform.

## 2. Data sources

The calculation uses the following raw data sources:
- **Blockchain events**: Parsed `Vault_CollectMarginFees_event` and `Vault_CollectSwapFees_event` logs from Mummy Finance's Vault contracts deployed on Arbitrum, Fantom, and Optimism
- **Token metadata**: Token symbols and decimal information for fee tokens
- **External data**: End-of-day price feeds for USD conversion of fee amounts
- **Protocol configuration**: Hardcoded revenue split percentage (40% protocol revenue, 60% to liquidity providers) effective from December 2, 2022

## 3. Step-by-step calculation

### Component A: Perpetual trading fees
- **Purpose**: Captures margin trading fees paid by users during leveraged perpetual trading
- **Logic**: Extracts `Vault_CollectMarginFees_event` logs from Mummy Finance Vault contracts across Arbitrum, Fantom, and Optimism. Each event contains the fee token address and fee amount paid. Events are deduplicated by block timestamp, transaction hash, and log index to ensure accurate counting.
- **Key fields**: `token` (fee token address), `feeTokens` (raw fee amount), account address, and blockchain metadata

### Component B: Spot trading fees  
- **Purpose**: Captures trading fees paid by users during spot trading activities
- **Logic**: Extracts `Vault_CollectSwapFees_event` logs from the same Vault contracts across all three supported chains. Similar to perpetual fees, each event records the fee token and amount collected. Events are processed identically with deduplication.
- **Key fields**: `token` (fee token address), `feeTokens` (raw fee amount), account address, and blockchain metadata

### Component C: Fee aggregation and standardization
- **Purpose**: Combines both fee types and prepares data for USD conversion
- **Logic**: Unions perpetual and spot fee events, then aggregates by daily timestamps using day-level truncation. Joins with token metadata to resolve token addresses to standardized uppercase symbols. Groups fees by timestamp, chain, business line, and token.
- **Key fields**: Daily `timestamp`, `chain`, `token_address`, `token_symbol`, aggregated `fees` amount

### Component D: Revenue split application
- **Purpose**: Determines the portion of fees allocated to liquidity providers versus protocol revenue
- **Logic**: Applies the configured revenue percentage (40% to protocol) to calculate supply-side allocation. Uses the dimension table that tracks when revenue splits changed, with forward-filling to apply rates to all subsequent days. Since December 2, 2022, the split has remained constant at 40% protocol, 60% supply-side.
- **Key fields**: `revenue_percentage` (0.4), calculated `fees_supply_side`

### Final aggregation
- **Combining components**: Total fees from both perpetual and spot trading are multiplied by (1 - revenue percentage) to isolate the supply-side portion
- **Currency conversion**: Fee amounts are converted to USD using end-of-day price feeds, with proper decimal correction applied based on each token's decimal places
- **Time aggregation**: All fees are aggregated at daily boundaries using timestamp truncation to day level
- **Final calculation**: Supply-side fees = total fees × (1 - 0.4) = total fees × 0.6, representing the portion of trading fees allocated to liquidity providers rather than protocol revenue

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

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

Mummy Finance

Supply-side fees

Supply-side fees

Competitive landscape

Chain breakdown