Performances
RD Popularity Index
RD Growth Index
Comparison
Follow Updates
Follow Lists
People
About NEBRA
NEBRA is a zero-knowledge proof aggregation protocol for Ethereum whose UPA product merges proofs from different circuits and proof systems into a single recursive SNARK verified on-chain. It targets verification cost: one Groth16 verification costs roughly 250,000 gas, which makes frequent submission impractical for zkRollups, zkVMs and zero-knowledge coprocessors. On-chain contracts register verifying keys, index proofs and settle fees, an off-chain aggregator builds the batch proof, and if it refuses to include a proof the submitter can trigger forced inclusion and collect a penalty.
NEBRA sits between proof generation and on-chain verification; unlike proof markets tied to one rollup, it lets zkEVM, zkDID and zkML proofs share a batch, so scale amortises per-proof cost. Application contracts only query whether a proof identifier is marked valid instead of carrying verification logic themselves.
The key milestones and long-term significance of NEBRA are as follows:
In March 2024, NEBRA Labs was officially established as a research and development organization focused on zero-knowledge proof (ZKP) aggregation technology. Its core product, Universal Proof Aggregation (UPA), aims to address the high cost of on-chain ZK proof verification on Ethereum.
In April 2024, UPA completed its first partner integration and released technical documentation detailing how its aggregation scheme merges multiple ZK proofs into one, significantly reducing on-chain verification overhead.
In May 2024, NEBRA published the UPA Gas Costs analysis report, quantifying the gas optimization achieved through aggregation, providing data support for subsequent large-scale adoption.
In July 2024, NEBRA hosted Proof Day in Brussels, focusing on real-world ZKP use cases and fostering ecosystem development.
In August 2024, UPA went live on the Ethereum mainnet, marking the transition of the aggregation service from testing to production and becoming a significant milestone in ZKP infrastructure.
In October 2024, UPA announced support for RISC Zero and Succinct SP1 proof systems, further expanding its cross-proof-system compatibility and providing a unified aggregation entry point for various ZK applications.
These milestones collectively outline NEBRA's trajectory from research to deployment and from a single proof system to multi-system compatibility. Their long-term significance lies in lowering the barrier to ZK application adoption and driving the scalable adoption of the Ethereum ecosystem.
Ecosystem data updated in September 2026 shows NEBRA's Universal Proof Aggregation live on Ethereum mainnet, World Chain and Base, with partners including Succinct, RISC Zero, Brevis, AltLayer, Galxe and Worldcoin, and its public proof explorer still running.
NEBRA's UPA merges zero-knowledge proofs from different circuits, proof systems and parties into one compact proof for onchain verification, which the team says cuts verification costs by roughly an order of magnitude. On World Chain the integration reduced zero-knowledge compute costs by more than 90%, supporting proof-of-personhood identity flows. From July 2026 the team also published security and audit material for integrators and connected the aggregator to more zkVMs and coprocessors.
Future strategy and roadmap: NEBRA keeps building the aggregator into a shared settlement layer, widening compatibility with zkVMs, machine-learning proofs and decentralized identity, lowering verification overhead when multiple proof systems coexist, and bringing more rollups and identity networks onboard.
Shumo Chu — Founder; former assistant professor at UC Santa Barbara and co-founder of p0x Labs (Aleo), with research focused on zero-knowledge proofs and multi-party computation.
Afra Wang — Chief Growth Officer.