Alchemy has contributed to Priority Blockspace for Humans (PBH) testing and refinement, adding support to its Rundler ERC-4337 bundler and conducting extensive game-day scenarios

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Rigorously battle-tested in an incentivized testnet by researchers and developers, including those from Flashbots and Alchemy, PBH is fully open-source and integrated into the World Chain Block Builder and Rollup Boost, a modular sidecar for OP Stack chains that enables custom transaction ordering. Both PBH and Rollup Boost have been independently audited by Nethermind.

This launch would not have been possible without incredible collaboration. In addition to Flashbots, Alchemy played a critical role in the testing, refinement, and rollout of PBH to mainnet as well as added PBH support to Rundler, their ERC-4337 bundler implementation written in Rust.