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Blockchains (L2)

Term Structure

# Term Structure Bridge deposits Methodology

## 1. Overview

Bridge deposits measures the total USD value of all tokens held in Termstructure's bridging addresses. This metric tracks funds that users have deposited into the protocol's bridge infrastructure, representing capital that is available for cross-chain operations. The calculation aggregates token balances across all identified bridge addresses and converts them to USD using end-of-day pricing data.

## 2. Data sources

- **Ethereum transaction data**: Blockchain transaction records and traces to track fund movements
- **ERC20 transfer events**: Parsed `Transfer` events from Ethereum to identify token inflows and outflows for bridge addresses
- **End-of-day price feeds**: Token price data used for USD conversion at daily intervals
- **Token metadata**: Information about token contracts including decimal places and symbols for proper balance calculations
- **Chain availability data**: Configuration data defining reliable operational periods for blockchain networks

## 3. Step-by-step calculation

### Component A: Portfolio balance tracking
- **Purpose**: Calculate the current token balances held by Termstructure's bridge addresses
- **Logic**: The system identifies the specific Ethereum bridge address `0x09e01425780094a9754b2bd8a3298f73ce837cf9` and tracks all token movements. For each token, it parses all `Transfer` events where this address is either the sender or recipient. Inbound transfers (where the bridge address is the recipient) are counted as positive balance changes, while outbound transfers (where the bridge address is the sender) are counted as negative balance changes. The net balance for each token is calculated by summing all inflows and subtracting all outflows over time.
- **Key fields**: Bridge address (`0x09e01425780094a9754b2bd8a3298f73ce837cf9`), token contract addresses, transfer amounts, and timestamps

### Component B: Balance normalization and USD conversion
- **Purpose**: Convert raw token balances to standardized USD values
- **Logic**: Raw token amounts from blockchain events are converted to human-readable values using each token's decimal specification from token metadata. For example, if a token has 18 decimals, the raw amount is divided by 10^18. These normalized token balances are then converted to USD using end-of-day price feeds, ensuring consistent valuation timing across all tokens.
- **Key fields**: Normalized `balance` amounts, token `decimals`, and USD `price` values

### Component C: Business metadata enrichment
- **Purpose**: Add standardized business classification fields for reporting consistency
- **Logic**: Each balance record is enriched with business-relevant metadata including the source `chain_id` (Ethereum), `market_sector_id` set to 'blockchains_l2' to classify this as Layer 2 blockchain infrastructure, `business_segment_id` set to 'blockchain' for sector categorization, and `product_id` set to null as this represents general bridge infrastructure rather than a specific product.
- **Key fields**: `chain_id`, `market_sector_id`, `business_segment_id`, and `product_id`

### Final aggregation
- **Combining components**: All individual token balances held by the bridge address are summed together to calculate the total `bridge_deposits` value in USD
- **Currency conversion**: USD conversion uses end-of-day price feeds applied to normalized token balances, ensuring consistent valuation timing
- **Time aggregation**: Data is processed at daily intervals with timestamps and timestamp grain fields tracking the measurement period
- **Final calculation**: The final metric represents the total USD value of all tokens held across Termstructure's bridge addresses, processed with a fill-forward strategy to handle any gaps in daily data and filtered to exclude periods outside reliable chain operation windows

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

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

Term Structure

Bridge deposits

Bridge deposits

Competitive landscape

Chain breakdown