Solana’s GBX Marketplace Launches With Validators Representing About 5% of Total Stake

Gravity Block Exchange (GBX) has launched on Solana mainnet with validators representing about 5% of the network’s stake, putting a block-ordering auction system into operation.

Builders compete in auctions to determine the sequence of each block, creating a shared market for validator block space. Astralane’s Bifrost and Gattaca’s Titan Builder are taking part in every auction round.

GBX says connected validators account for about 5% of Solana’s total stake and receive rewards 20% to 30% above the cluster average.

Validators can connect through Gravity Connector, a sidecar that does not require a custom validator fork. The integration supports Agave and Jito-Solana, while Firedancer support remains in development. If the external ordering path is unavailable, validators can return to Solana’s native scheduler.