I have asked support and they have confirmed that they do not deem any crypto earnings as legal and valid source of income apart from income made through mining.

You can use one of the following documents to verify your source of funds:

    Salary ( You will need to send us a recent bank statement indicating receipt of your salary or original of your payslip )

    Sales of shared or other investments / liquidation of investment portfolio / bonds ( You will need to send us a bank statement clearly showing receipt of funds and investment company name or interest on bonds received )

    Sale of property ( You will need to send us a copy of the contract of sale and a bank statement showing the proceeds of the sale )

    Inheritance ( You will need to send us a copy of the deceased's will, and a bank statement showing the received funds, along with your current balance )

    Company sale ( You will need to send us a letter detailing company sale signed by a licensed solicitor or regulated accountant on letter-headed paper )

    A Gift from a family member or close relative ( You will need to send us a donor's letter explaining the reason for the gift and the source of their wealth. Also, we will require certified identification documents from donor )

    Winning the Lottery ( You will need to send us a receipt of winnings and documentation e.g. bank statement showing the origin of the funds initially deposited )

    Divorce settlement ( You will need to send us a divorce settlement agreement and bank statement clearly showing receipt of funds )

    Loan ( You will need to send us an executed copy of the loan agreement and a bank statement showing the received funds along with your current balance )

    Mining ( You will need to send us a ledger of the amount of cryptocurrency mined, as well as a wallet address and transaction hash to which the mined cryptocurrency was delivered )