World Chain is designed as a Layer 2 blockchain built on the OP Stack and optimized for verified humans. It leverages World ID, a privacy-preserving proof of personhood, to prioritize real users over bots and Sybil attackers. It integrates with World App and other identity wallets using Safe smart contract infrastructure.

World Chain is an Ethereum Layer 2 chain that enables applications to distinguish between bots and verified humans. It forms a core part of the Worldcoin ecosystem, aiming to power more human-centric onchain activity by prioritizing real people in blockspace allocation and transaction processing.

World Chain is developed by the team behind Worldcoin, which is currently governed by the Worldcoin Foundation. Worldcoin's investors include a16z, Multicoin Capital, 1confirmation, CoinFund, among others.

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# World Chain Bridge deposits Methodology

## 1. Overview

Bridge deposits measures the total USD value of assets held in Worldchain's bridge contracts on Ethereum. This metric tracks the total value locked in bridging infrastructure, representing funds that users have deposited to move assets between Ethereum and Worldchain. The calculation monitors the aggregate balance across all identified bridge contract addresses and converts token holdings to USD values.

## 2. Data sources

- **Ethereum blockchain events**: Parsed `Transfer` events and balance-affecting transactions for bridge contract addresses
- **Token balance data**: Balance snapshots for tokens held in bridge contracts
- **End-of-day token price feeds**: USD conversion rates for all tokens held in bridge contracts
- **Token metadata**: Contract addresses, decimal places, and token identification information
- **Chain availability data**: Data quality and availability metrics for filtering

## 3. Step-by-step calculation

### Component A: Bridge address identification
- **Purpose**: Define the specific Ethereum contract addresses that serve as Worldchain bridge contracts
- **Logic**: Three hardcoded bridge contract addresses are identified: `0x470458C91978D2d929704489Ad730DC3E3001113`, `0xd5ec14a83B7d95BE1E2Ac12523e2dEE12Cbeea6C`, and `0x153a69e4bb6fedbbaaf463cb982416316c84b2db`. These represent the core infrastructure contracts that hold user deposits for cross-chain transfers.
- **Key fields**: `account_addresses` list containing the bridge contract addresses for Ethereum

### Component B: Portfolio balance calculation
- **Purpose**: Calculate the total value held across all tokens in the identified bridge addresses
- **Logic**: The portfolio calculation processes Ethereum transaction data to determine token balances for each bridge address. This includes tracking `Transfer` events, balance changes, and token movements to maintain accurate balance snapshots. All token balances are identified by contract address and aggregated across the bridge contracts.
- **Key fields**: `balance` representing the token amounts, `timestamp` for time boundaries, `chain` identifying Ethereum as the source blockchain

### Component C: Business metadata application
- **Purpose**: Apply business categorization and metadata to the balance data
- **Logic**: Each record is tagged with business-relevant classifications including market sector as `blockchains_l2` (indicating Layer 2 blockchain category), business segment as `blockchain`, and no specific product categorization. The data maintains timestamp granularity for time-series analysis.
- **Key fields**: `market_sector_id` set to 'blockchains_l2', `business_segment_id` set to 'blockchain', `product_id` set to null

### Final aggregation
- **Combining components**: All balance values are summed across the three bridge addresses, grouping by timestamp, timestamp grain, chain, and business metadata to create aggregate bridge deposit values
- **Currency conversion**: Token balances are converted to USD using end-of-day price feeds, with decimal adjustments applied based on token metadata
- **Time aggregation**: Data is aggregated by timestamp boundaries with forward-fill strategy applied for missing data points to ensure continuous time series
- **Final calculation**: The final bridge deposits value represents the sum of all USD-converted token balances held across all three Worldchain bridge contracts on Ethereum, filtered for chain data availability to ensure quality standards

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

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

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Bridge deposits

Bridge deposits

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