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ZK proving costs and time are a major hurdle for scaling data-rich dApps.
@brevis_zk is offering a solution with their coChain (OP Model).
Instead of forcing a ZK proof for every request (pure-ZK), Brevis coChain uses a PoS Consensus to generate results. This bypasses high costs & latency, but it remains trustless.
The PoS proposals are subject to a ZK-proof challenge window. If a validator is challenged and proven wrong, they get slashed on Ethereum.
The OP Model combines crypto-economics and Zero-Knowledge for trust/cost tradeoffs and even enables proofs of non-existence.

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