Configurable block building for Solana.

Harmonic gives validators control over how their blocks are built, raises the revenue floor across the validator set, and keeps Solana's markets fast and fair.

Why we built it

Solana wins on performance and open, competitive markets. As it scales, block building has grown complex enough to push validators toward a single, often centralized, builder. Harmonic puts the choice back with the operator: pick your builder and your rule, and Harmonic runs the platform underneath. The result is higher validator revenue, broader stake distribution, and a more resilient network.

Backed by Paradigm

Harmonic is backed by Paradigm, and runs the validators of leading exchanges, asset managers, and Solana-native teams.

Run by

JupiterKrakenCoinbaseDeFi Dev CorpTemporalTwinstakestakefishOtterSecChainflowAxiomSolend