Apostille is a form of authentication of documents for international use under the terms of the Hague Convention of 1961. An apostille certifies the authenticity of the signature, seal, or stamp on a document and makes it officially recognized in countries that are parties to the Hague Convention.

The process of Apostille services in Kolkata involves the following steps:

1. Notarization: The certificate must be notarized by a notary public.

2. Attestation by the Appropriate Authority: The notarized certificate must then be attested by the appropriate authority, such as the Ministry of Foreign Affairs (MOFA), the Chamber of Commerce, or the Home Department, depending on the type of certificate.

3. Apostille by the Designated Authority: The attested certificate is then sent to the designated authority, such as the MOFA, for apostille.

It's important to note that the specific requirements and process of obtaining an apostille may vary depending on the country of issuance and the country where the certificate will be used, so it's always a good idea to check the latest information from the appropriate authorities.