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

Kroma Network is an L2 smart contract platform for decentralized applications on Ethereum. Kroma Network was founded by Lightscale, a subsidiary of Wemic, and launched in 2023.

The Kroma Network team and the founding entity, Lightscale, own and govern the protocol.

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Kroma Network

# Kroma Network Bridge deposits Methodology

## 1. Overview

The Kroma bridge deposits metric measures the total USD value of assets held in Kroma's official bridge contract addresses on Ethereum. This metric represents the amount of user funds that have been deposited into the bridge but not yet withdrawn, serving as an indicator of capital locked in the Kroma L2 ecosystem. The calculation tracks token balances across specific bridge addresses over time and converts them to USD values using end-of-day pricing data.

## 2. Data sources

- **Ethereum blockchain transaction data**: Transaction records showing token transfers to and from bridge addresses
- **Ethereum event logs**: Parsed token `Transfer` events and contract interaction logs for bridge addresses
- **Token balance snapshots**: Historical balance data for tokens held at specific Ethereum addresses
- **End-of-day token price feeds**: USD pricing data for token valuation and currency conversion
- **Token metadata**: Token contract information including decimal precision and symbol data
- **Chain availability configuration**: Data availability periods and quality filters for Ethereum chain data

## 3. Step-by-step calculation

### Component A: Portfolio balance calculation
- **Purpose**: Calculates the token balances held by Kroma's bridge addresses over time
- **Logic**: The calculation identifies two specific Ethereum addresses (`0x827962404d7104202c5aaa6b929115c8211d9596` and `0x31f648572b67e60ec6eb8e197e1848cc5f5558de`) that serve as Kroma's bridge contracts. For each address, the system tracks all token balances by processing Ethereum transaction data and event logs to determine token holdings at different points in time. The balance calculation accounts for all `Transfer` events affecting these addresses, both inbound deposits and outbound withdrawals.
- **Key fields**: The calculation produces `timestamp` for time tracking, `chain` identifier for Ethereum, `token_address` for each token held, and `balance` representing the token amount after decimal normalization.

### Component B: Balance aggregation and categorization
- **Purpose**: Aggregates individual token balances into total bridge deposits and adds business metadata
- **Logic**: All token balances for the bridge addresses are summed together for each timestamp to create a single total balance value. The aggregated data is then categorized with business-relevant metadata including market sector classification as `blockchains_l2` and business segment as `blockchain`. The `product_id` field is left null since this represents overall bridge activity rather than a specific product.
- **Key fields**: Results include `timestamp_grain` for time aggregation level, `chain_id` for blockchain identification, business classification fields, and `bridge_deposits` as the summed balance value.

### Final aggregation
- **Combining components**: The portfolio balances are aggregated by summing all token balances across the specified bridge addresses for each timestamp
- **Currency conversion**: Token balances are converted to USD using end-of-day price feeds, with proper decimal adjustment based on each token's decimal precision from metadata
- **Time aggregation**: Data is organized by timestamp with configurable time grains, and a forward-fill strategy is applied to handle missing data points by carrying forward the last known value
- **Final calculation**: The final metric represents the total USD value of all tokens held in Kroma's bridge addresses at each point in time, filtered by chain data availability periods to ensure data quality and completeness

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

Value of assets held in a project's bridge contracts.

Kroma Network

Bridge deposits

Bridge deposits

Competitive landscape

Chain breakdown