This is regarding income declaration for UK visa application. Basically, with in the last 12 months, almost 90% of my income has arisen from cryptocurrency trading. So when I submitted my bank statement to the UKVI, they refused my visitor Visa application stating they don't believe that my cash flows/income have been incurred as a result of cryptocurrency trading. I am not quite sure what documents I should submit to prove that. I don't think they'll find me printing out receipts on localbitcoins or binance trade history credible. Does anyone have any idea about this?
The issue here is to make them believe that your income is from the crypto trading! You need some documented proof to establish the fact that you have not made such income by selling illegal things.
Every exchange you work with, must have something called "trading history" which can be downloaded from the exchange website itself. It can be a PDF or an Excel file that provides the details of your trades executed within a certain range of dates. Keep such documents handy so that it can be produced when required. It is also needed during your tax filings.
Also keep your last years tax document handy if you haven't hidden any information. That should suffice to counter the questions and arguments of the ignorant immigration officers. Hope this helps!