Having cryptocurrencies does not imply they have to be declared. The obligation arises when they are sold. As with stocks, the fact of having cryptocurrencies does not imply that they are taxable. Obligations come when profit is made out of them usually at the moment of selling.
USD RATE DECEMBER 13, 2021 = $ 3.981,16 COP
USD AVERAGE RATE 2021 = $ 3.743,09 COP