What the tax authority is talking about revealing here is not about the total bitcoin you have, but the amount you have sold because since its regarded as property, its the capital gains that is subjected to tax and that would not happen if you didn't sell your property which in this case bitcoin.

From the legal and civic point of view, the onus on disclosure is on the individual show to the tax authority the total of income generated from selling crypto currency that have increased in value over the years. On the decentralization and how bitcoin income should be tax free based on your suggestion is out of it because as a dream gets bigger, some interest and variables that have not be thought of becomes an important fact that needs to be dealt with. This is exactly the point where bitcoin is that compromise needs to be made on the part of enthusiasts to have a problem free environment.

What the tax authority needs to do since they are helpless without individual disclosure is to review the current policy if that is what is leading people away from paying willing couple with the fact that they recognize that government would have to spend more in other to unravel the people behind every wallet address there is fund.