জন্ম নিবন্ধন যাচাই, which refers to birth registration in Bengali, can be done online in Bangladesh through the official website of the Bangladesh government's birth registration system. The website is managed by the Local Government Division, Ministry of Local Government, Rural Development and Cooperatives.

Here are the general steps you can follow:

1. Visit the Official Website: Go to the official website for birth registration in Bangladesh. As of my last knowledge update in January 2024, the website was https://jonmonibondhonjachai.pro/. However, websites can change, so it's advisable to check for the most recent and updated website.
   
2. Create an Account: You may need to create an account on the website. This usually involves providing your personal information.
   
3. Fill in the Registration Form: Once you have an account, you'll need to fill in the birth registration form with accurate details about the individual whose birth is being registered.
   
4. Upload Necessary Documents: You might be required to upload supporting documents such as a birth certificate issued by the hospital, a photocopy of the hospital discharge certificate, and parents' national ID cards.
   
5. Submit the Form: After completing the form and uploading the necessary documents, submit the application.
   
6. Payment (if applicable): Depending on the specific rules and regulations in place, there might be a fee associated with the birth registration process. Ensure you make any required payments.
   
7. Check Application Status: You can check the status of your application online to see if it has been processed and if the birth registration has been successful.