Transfer volume

Overview

Transfer volume measures the total value of assets moved across chains using a bridge project. Since users pay a fee to transfer funds, this metric tends to correlate with the project’s ability to generate fees & revenue from cross-chain activity.

Data sources

• Smart contract events capturing cross-chain transfer activities
• End-of-day price feeds for USD conversion
• Asset metadata for decimal normalization

Common calculation approaches

Deposit and lock-based bridge tracking

For cross-chain bridges, transfer volume is calculated by aggregating deposit and withdrawal events from bridge contracts. For instance, FundsDeposited events are tracked from Across spoke pool contracts, while TransferSent events are captured from Hop Protocol contracts. These transaction values are normalized using asset metadata and converted to USD using end-of-day price feeds.

Mint, burn, and messaging-based tracking

For asset issuers and interoperability networks, transfer volume is calculated by tracking token burn and message-initiated transfer events. For example, DepositForBurn events are monitored from Circle's TokenMessenger contracts, and CCIPSendRequested events are extracted from Chainlink EVM2EVMOnRamp contracts. These raw amounts are normalized by decimal precision and converted to USD.

Note: The calculation approaches and protocol examples above are representative patterns. Individual protocol implementations may vary.