Art Blocks, a generative art collection, just sold its single largest NFT sale. Artist Tyler Hobbs' Fidenza #313 sold for 1,000 ETH, or little over $3.3 million at the time of acquisition. The artwork was last sold on June 11 for 0.58 ETH (about $1,400) immediately after it was minted. Art Blocks was released in November 2020, but its value has skyrocketed in the last few weeks.