Proof of Merge is a fully on-chain, non-transferable, and dynamic NFT that will change throughout The Merge. We detect The Merge on-chain by checking if the DIFFICULTY opcode returns 0 according to EIP3675. During The Merge, the current Ethereum execution layer will merge into the Beacon chain, and Ethereum will transition from Proof of Work to Proof of Stake. Proof of Merge is a collaboration between Michael Blau (x0r) and Mason Hall.