Account verification process (business & personal)

What documents do I need to verify my business account?
What documentation is needed for a cryptocurrency-only company without a traditional bank account?
What documents should be provided instead of tax declaration and bank statements for a recently incorporated company?
I am working as a freelancer. Is it possible for me to verify my business account?
How do I verify my personal account?
How long does the merchant verification process take?
Are there any exceptions to providing documents?
Why is it necessary for merchants to provide a tax declaration and bank statement?