The short answer is that you should speak to a specialist crypto accountant / tax professional. The reason is that some areas of crypto are still slightly grey. You will want someone who knows your situation well and has the right knowledge to back up any tax questions to make the call.
In my experience, Yieldnodes do exactly what they say and their user experience and communication is excellent.
The model is ‘revenue’, however for ease of comparison, the average monthly return is around 11%. Yield nodes generates income and primarily by ‘masternoding’ – blockchain validation and crypto computations and storage. You do not need to know anything about masternodes to participate and earn passive income.
If you decide to deposit 1,000 Euro, Yieldnodes will tell you how much Bitcoin to send. ie 1,000 Euro worth of Bitcoin at current exchange rate.
Take note that all yield / return figures are given AFTER the 15% is deducted. That is, the percentage returns you see are the percentages returned to participants (for example, the average 11%). Nothing is concealed.
With many other high-yield passive income options, however, you cannot withdraw investments (you only earn returns), therefore this is a significant advantage for Yieldnodes. Note that each compound is likewise considered a 'deposit' and is therefore subject to the 6-month lockup. There is a 48-hour emergency withdrawal option that incurs a 25% penalty.
Improved FAQ section an a surprise gift of 25 EURO for every member – Happy Christmas! Decenomy and Yield Nodes merch store launched: https://decenomy.myshopify.com, 100% of which go into the masternoding pool.