To apply for a Digital Signature Certificate (DSC) online, select a licensed Certifying Authority and choose the required Class 3 DSC based on your usage. Fill out the online application form, upload identity and address proofs, complete Aadhaar eKYC or video verification, make payment, and download the DSC for secure, legally valid digital transactions. https://edigitalsignature.org/blog/apply-for-digital-signature-certificate-online