Both geographically and in terms of meaning, the Hermitage exhibition The Ethereal Aether is closely linked to the Stock Exchange building created by Jean-François Thomas de Thomon, whose “cloud world” is used to exhibit the most modern digital works. Art in the blockchain is directly related to cryptocurrencies and crypto exchanges. Consequently, the virtual space of the historical Exchange is the perfect platform to talk about NFTs and cryptography in a historical-philosophical context. We found the name of the exhibition in the poetry of Fyodor Tyutchev, which makes it possible to toy with the word “aether” in its different senses: the original Greek, traditional, physical, and modern cryptocurrency.