a16z Crypto released the NFT "Proof-of-Merge" commemorating the merger of Ethereum, which users can mint for free before the merger occurs. The NFT is a dynamic NFT that outputs different metadata and illustrations based on the value of "difficulty" and the estimated time of merging, and features ASCII art to present different visual effects in computer language. The life cycle of the NFT has three stages, all of which are based on the reading of the above-mentioned "difficulty" embedded in the EVM. In the first stage, two separate circles are shown while pre-merging. In the second stage, as the merger approaches, the two circles will begin to intersect until they overlap, creating an eclipse-like picture; once the merger occurs, the shape will transform into its final form: the yin-yang symbol.