Address whitelisting is a control that restricts withdrawals or transfers to blockchain addresses that have been approved in advance.
Custodians, exchanges, corporate treasury systems, and other institutions can use allowlists to reduce unauthorized withdrawals, operational errors, and transfers to unapproved destinations. Approval can require additional authentication, a waiting period, ownership verification, compliance screening, or multiple authorized signers. The control operates at the wallet, account, or policy layer and leaves the underlying blockchain protocol unchanged.
Whitelisting restricts which destinations a system will authorize. Blockchain addresses outside the allowlist can still exist and remain valid on the underlying network.
Destination controls can reduce operational and fraud risk in high-value stablecoin treasury and custody workflows.
A corporate wallet can require a new supplier address to be approved by two administrators before any stablecoin payment can be sent to it.