Accounts Connected:

criptomasterBest , criptoguruBEST

Proof:

They have the same website. The names are practically the same. It's pretty unlikely that these are not connected. Especially considering the guru account sent 1 merit to the criptomasterBest account.

3 day between registrations, as well.

Miscellaneous:

Archives:
https://archive.is/sPT4Y
https://archive.is/f1eSi

Also sent merit to one another (though 1-merit amounts).

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This is more circumstantial but I would say that unless this is just a freak occurrence of two different people who have a "cripto" prefix and a "best" suffix signing up within 3 days of one another, it's pretty dead-cut.