Gravity Alpha batches users' transactions and submits them to Ethereum, paying a share of the transaction fees to Ethereum validators (expense).

Gravity Alpha is an L2 smart contract platform for decentralized applications on Ethereum. Gravity Alpha was founded by Galxe and launched in 2024.

G tokenholders own and govern the protocol. Galxe's investors include Arbitrum Foundation, Multicoin Capital, Dragonfly Capital, etc.

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Gravity Alpha Mainnet

# Gravity Alpha Mainnet Median transaction fee Methodology

## 1. Overview

The median transaction fee metric measures the middle value of all transaction fees paid on the GravityAlpha L2 blockchain over a daily period, expressed in USD. This metric provides insight into typical transaction costs experienced by users, filtering out extreme values that could skew an average calculation. The methodology involves extracting individual transaction gas fees from blockchain records, calculating daily medians, and converting to USD using end-of-day price feeds.

## 2. Data sources

- **GravityAlpha transaction records**: Raw blockchain transaction data including gas usage metrics, gas prices, transaction hashes, and timestamps from the GravityAlpha L2 network
- **Gas consumption data**: Individual transaction gas usage amounts (`gas_used_amount`) and effective gas prices (`gas_price`) from transaction receipts
- **Token price feeds**: End-of-day USD price feeds for the G token (GravityAlpha's native token) sourced from CoinGecko market data using the 'g-token' identifier
- **Token metadata**: Hardcoded token information including the G token contract address (`0xbb859e225ac8fb6be1c7e38d87b767e95fef0ebd`) and symbol mapping

## 3. Step-by-step calculation

### Component A: Transaction fee calculation
- **Purpose**: Calculate individual transaction fees in native G token units from raw blockchain transaction data
- **Logic**: Extract all GravityAlpha transaction records and calculate gas fees by multiplying `gas_used_amount` by `receipt_effective_gas_price`, then divide by 1e18 to convert from wei units to standard G token units. Each transaction includes metadata like transaction hash, from/to addresses, and block timestamp. The calculation uses safe casting and division functions to handle potential null values or division by zero scenarios.
- **Key fields**: `gas_fee_amount` (calculated fee in G tokens), `block_timestamp` (for daily aggregation), `gas_used_amount`, `gas_price`, `transaction_hash`

### Component B: Daily median aggregation  
- **Purpose**: Calculate the median transaction fee for each day across all transactions
- **Logic**: Group all transaction fees by day using timestamp truncation to daily boundaries. For each day, calculate the median fee using an approximate quantiles function that finds the 50th percentile value across all transaction fees. This approach handles large datasets efficiently while providing an accurate middle value that represents typical user experience better than averages which can be skewed by outliers.
- **Key fields**: `timestamp` (daily boundaries), `transaction_fee_median` (median fee in G tokens)

### Component C: Price data integration
- **Purpose**: Provide daily USD price conversion rates for G tokens
- **Logic**: Extract daily G token price data from CoinGecko using the 'g-token' market identifier. The price data includes daily timestamps that align with the median calculation boundaries and USD price values. Data is filtered to ensure distinct daily records and safe casting is applied to handle data type consistency.
- **Key fields**: `timestamp` (daily price date), `price` (USD price per G token)

### Final aggregation
- **Combining components**: Join daily median transaction fees with corresponding daily G token prices using timestamp matching. This ensures each day's median fee is converted using the appropriate end-of-day exchange rate.
- **Currency conversion**: Multiply the native token median fee by the daily USD price to convert from G tokens to USD. This calculation uses safe multiplication to handle potential null values.
- **Time aggregation**: All calculations maintain daily granularity with timestamp truncation ensuring consistent daily boundaries across transaction aggregation and price matching.
- **Final calculation**: The final metric value represents the median transaction fee in USD for each day, calculated as median_fee_in_G_tokens × daily_USD_price_per_G_token. Additional processing includes applying finalization macros for standardization and chain availability filtering to ensure data quality and consistency with other blockchain metrics.

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

Gravity Alpha MainnetG

Median transaction fee

Median transaction fee

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