Assets proved that they can be asset than a currency.

This week three luxury apartments located in Budva, Montenegro sold for 420 BTC (3.2Mn USD) according to Notary Office and the firm Astra Montenegro Investment Association (AMIA). Furthermore, the AMIA has been successfully promoting the use of digital currencies in Budva and has convinced the neighboring Dukley hotel, Beach Lounge, and Marina to accept BTC.
Cryptocurrency has been declared as the Assets in many countries.As one of the asset behaviour is observed that 3 luxury apartments where sold for 420BTC.Maybe Cryptocurrency should be declared as Assets as because in the early December it adopted main stream but due to the adoption the transfer fees reached $25 per transaction.So if someone wants to buy something of $2 with Bitcoin then they have to pay $25 fees for their transaction.These does not make any sense that they can be currencies.
Russian court has declared cryptocurrency as an asset.
So what do you think about cryptocurrency?
Is it currency or an asset?