A Layer 2 blockchain for trading NFTs on the Ethereum blockchain. The goal of Immutable X is to support a huge volume of daily NFT trades using zk-Rollups as the Layer 2 to Layer 1 transfer mechanism. Using zk-Rollups, trades on Immutable X are turned into a proof by having the asset owners sign the trades. The proof is published on Ethereum and verified by a smart contract. See
Layer 2 blockchain and
crypto glossary.