On January 23, 2026, Aligned released the mainnet alpha of its Proof Aggregation Service.1 The service batches zero-knowledge proofs into a single recursive proof verified on Ethereum, distributing verification cost across the batch.
Mechanics
Proofs from individual users are grouped into chunks and recursively combined into a final aggregated proof. Verification on Ethereum costs approximately 300,000 gas per aggregated proof, with the cost amortized across the batch. Proof commitments are stored as blob data for an 18-day retention window. The initial release supports SP1; additional proof systems are planned.1
Ethrex integration
The Proof Aggregation Service is integrated with Ethrex, Lambda’s Rust execution and ZK-rollup client, enabling based ZK-rollup deployments to settle aggregated proofs through the AlignedProofAggregationService contract.1 The service complements the Proof Verification Layer that has been live on Ethereum mainnet since December 2024.
Pricing
Access is metered through a prepaid subscription: clients deposit ETH and receive a daily proof quota.1