> For the complete documentation index, see [llms.txt](https://manuais.soluti.com.br/faq-icp-brasil-or-migracao-cadeia-v12-8/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://manuais.soluti.com.br/faq-icp-brasil-or-migracao-cadeia-v12-8/introducao-entendimento-da-cadeia-v12/mudancas-com-a-cadeia-v12.md).

# Mudanças com a Cadeia V12

A nova cadeia **V12** traz algumas mudanças importantes nas políticas de certificação.

Entre elas:

* Não haverá mais emissão de **certificados de assinatura para Pessoa Jurídica** na nova cadeia.
* O produto **CNPJ A3 com validade de 3 anos será descontinuado** até 01/03/2029.
* Passará a existir o **Selo Eletrônico**, um novo tipo de certificado digital voltado para pessoas jurídicas.


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