A dependent shall at all times furnish the department with proof satisfactory to the director of the nature, amount, and extent of the contribution made by the deceased worker.

Proof of dependency by any beneficiary residing without the United States shall be made before the nearest United States consul or consular agency, under the seal of such consul or consular agent, and the department may cause any payments to which such beneficiary is entitled to be transmitted to the beneficiary through the nearest United States consul or consular agent.