GBX’s documentation describes competing builders submitting transaction orderings for selection during Solana validator slots.
The auction process runs in rounds during a validator slot, with GBX selecting among the builders’ proposed transaction orderings. Each round features bids from Astralane’s Bifrost and Gattaca’s Titan Builder. Builder bids set the order of transactions in each block, putting validator capacity into a competitive market.
GBX puts its connected validators at roughly 5% of Solana stake. GBX says those validators earn 1.2 to 1.3 times their cluster average.
Validators can add Gravity Connector alongside their existing setup without changing their validator fork. Agave and Jito-Solana are supported; Firedancer compatibility is still in development. If the external ordering route is unavailable, validators can use Solana’s native scheduler.
