Jito Labs on 21 July unveiled the Block Assembly Marketplace (BAM), a proposed overhaul of Solana’s transaction pipeline that aims to increase privacy, verifiability and developer flexibility on the high-speed blockchain. The architecture introduces a private, encrypted mempool designed to block ‘sandwich’ and other maximal-extractable-value attacks, while allowing applications to set their own sequencing rules for use cases such as central-limit-order books, perpetual futures and dark-pool trading. All blocks produced through BAM would be publicly auditable, according to a project blog post. Solana developers and investors have long sought stronger protection against MEV and greater control over order flow. If adopted by core contributors, BAM could position Solana as a more attractive venue for sophisticated trading protocols and lift network usage after a series of performance upgrades earlier this year.