Builders take a holistic view of the block by evaluating all flow and running multiple scheduling algorithms to find the best blocks.
GBX: open market for Solana blockspace
Gravity connects validators to block builders that compete to produce the highest-value blocks, raising validator rewards. For traders, that means one competitive market with a consistent, value-based ordering rule instead of fragmented validator schedulers.
Why Gravity
Higher validator rewardsBuilders compete to produce the most valuable block.
More predictable executionOne value-based rule gives traders consistent execution.
Resilient by designMultiple independent builders with native scheduler fallback.
The Market
how a leader slot works
Connect
A lightweight sidecar connects the validator to GBX.
Compete
Builders compete to produce the highest-value block.
Execute
GBX picks the winning block. The validator verifies and executes it.
why builders exist
Better blocks through competition.
Sequencing is a complex, latency-sensitive packing problem. Builders weigh compute limits and transaction dependencies all within a short decision window. Solving it well takes dedicated infrastructure.
Simulation and sequencing move off the validator's critical path. Builders simulate against the block as it is built so validators receive blocks that are known to execute.
Traders meet a consistent, value-based market across participating validators, making transaction ordering clearer and more predictable.
Sequencing lives outside the protocol, so new algorithms and execution guarantees ship without waiting on a validator-client release.
Astralane