what's Titan Builder?

Titan Builder is a specialized block builder in the Ethereum ecosystem, designed to optimize transaction ordering and execution for validators using MEV-Boost. It operates as part of the proposer-builder separation (PBS) paradigm, where builders like Titan construct high-value blocks by incorporating bundles of transactions, including private ones, to maximize extractable value while adhering to Ethereum's consensus rules. The platform supports advanced features such as bundle submission via JSON-RPC endpoints, MEV sharing mechanisms to distribute rewards back to users and proposers, and tools for blob transactions in post-Dencun upgrades. Key technical aspects include authentication via API keys, support for end-of-block bundles to fill remaining space efficiently, and integration with searcher networks for competitive block construction. Titan Builder emphasizes transparency and fairness, with public documentation on its block building algorithm and builder keys to prevent impersonation attacks. It serves validators and searchers by providing reliable, geo-routed RPC endpoints across regions, ensuring low-latency access to its building services in the decentralized finance infrastructure.

Titan Builder exceeded 51% market share as an Ethereum block builder.