Jito Reveals Largest-Ever Upgrade to Solana Block Building - Unchained

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Jito, a leading provider of maximal extractable value (MEV) and block-building infrastructure on Solana, has introduced a major upgrade to how the network processes transactions.

“Introducing BAM: The Block Assembly Marketplace that revolutionizes how Solana processes transactions,” wrote Jito on X, sharing details of the upgrade being dubbed the “biggest change in Solana history.”

BAM routes transactions through a network of nodes, rather than a single offchain auction system, to enhance efficiency and transparency while reducing the risks of toxic MEV practices like sandwich attacks.


This story is an excerpt from the Unchained Daily newsletter.

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Transactions will be ordered and transmitted privately through trusted execution environments (TEEs), ensuring security and privacy until execution and providing on-chain attestations for auditability.

Jito earned around $570 million in tips paid to validators and stakers in the first half of 2025, according to Solana researcher Kam Benbrik

“More than 90% of the validator set uses Jito, they have a monopoly and could have simply stopped there, but they didn’t,” he said on X

“Instead they decided to fundamentally change the architecture.”

SOL was on a tear Monday, jumping to an intraday high of $204 before easing to $198 by 6 a.m. ET on Tuesday.

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