What documents are required to open Blockchain Account

What is a 2fa? Why is it important for Blockchain account? Users with less information always have doubts related to such things. Well 2fa is a two-factor authentication requires to secure your account from unwanted access. To get the detail information about it, you can call on the Blockchain exchange phone number +1 833 228 1682 and get connected with the experts and discuss your matter. The experts will give skilled assistance so that users get everything clearly and completely.
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