Definition ∞ A sequencing marketplace is a decentralized mechanism where various entities bid or compete to order and submit transactions for processing on a blockchain, particularly for rollup solutions. This market-driven approach aims to decentralize the sequencing role, mitigating centralization risks and enhancing censorship resistance. It introduces economic incentives for transaction ordering.
Context ∞ The concept of a sequencing marketplace is a prominent topic in the context of decentralized sequencing for rollups. Discussions revolve around its design, the economic incentives for participants, and its potential to reduce maximum extractable value (MEV) and improve the fairness of transaction ordering in layer-2 networks.