The total amount of fees paid in transactions related to on-chain exchange activity.

• Deposits: Transactions that include an exchange address as the receiver of funds.
• Withdrawals: Transactions that include an exchange address as the sender of funds.
• In-House: Transactions that include addresses of a single exchange as both the sender and receiver of funds.
• Inter-Exchange: Transactions that include addresses of (distinct) exchanges as both the sender and receiver of funds.

If a transaction can be categorized into multiple of these categories (e.g. a transaction that sends funds externally as well as in-house), the fees are split into percentages according to the volume transferred.