An entire year has passed since the time you registered on the platform for automatic cloud Bitcoin mining. During your absence, there was an accrual of 1.3426 BTC ($56872.54) USD via cloud mining. In your account, there's 1.3426 BTC, totaling $56899.
As an expert in Spanish immigration law, I am not able to provide advice on Bitcoin, cloud mining or any related tax issues. It would be best to consult with a financial advisor or a lawyer who specializes in digital currency and tax law.