One of the first things you learn regarding cryptocurrencies is that you don’t technically “own” these assets. Unlike traditional currencies, you aren’t literally transferring coins into your wallet.
Instead, purchasing a digital asset means you’re buying a key that represents ownership of such value. You can use that key to tell the blockchain where to move your assets. This brings into question – do these assets actually exist? The “Proof of Keys” movement, which is coming to fruition as of today, is uncertain of the answer.