Outsourcing social security confirms whether I have paid social security at my place of residence.

Inquire about personal social security payment information through the local social security bureau or insurance company. If you work through an outsourcing company, then the social security payment is handled by the outsourcing company. You can contact the personnel department or financial department of the outsourcing company to ask whether they have paid social security at their place of residence, and obtain relevant social security payment records and supporting documents.