Gravity Block Exchange (GBX), a Solana blockspace market, said it had gone live on mainnet. Instead of relying on a single scheduler to order transactions, GBX uses auctions in which block builders compete to determine the ordering of each block. GBX describes its goal as a unified ordering market with a common set of rules for users.
GBX reported that participating validators represented about 5% of total stake and that their rewards were 20%–30% above the cluster average. It said two independent builders participated in each auction: Astralane’s Bifrost and Gattaca’s Titan Builder. These are GBX’s reported mainnet figures, not evidence of broader adoption.
According to its public documentation, validators can connect through the Gravity Connector sidecar without a custom validator fork. GBX currently supports Agave and Jito-Solana; Firedancer support remains in development. If the external ordering path is unavailable, validators can fall back to the native scheduler.
Originally reported by ChainCatcher on November 12, 2026, at 08:26 UTC+8.