Static Addresses
Static deposit addresses are permanent addresses strictly assigned to a specific user by internal_user_id and/or email. All deposits made to a static address trigger webhooks (see Static Address Deposit Webhooks).
Use static addresses when you need a stable deposit address for a specific user — for example, in user-facing wallets or top-up flows. Each address is uniquely identified by internal_user_id (and optionally email), so re-creating with the same identifier returns the existing address rather than generating a new one.