The legalisation of the certificate becomes very important if you are availing visa for going abroad. Certificate apostille in Thrissur shall remain available to each of the residents of Thrissur. Certificate Apostille is also a form of Attestation but the format differs. Only the Hague nations are eligible for the apostille attestation. The Hague nations are the nations that signed the Hague Convention happened in the year 1961, where 104 countries participated in the summit.