ZK-rollups are the hottest thing in Ethereum right now, having seemingly appeared out of nowhere in late 2018 to fundamentally reshape the “Eth2” plan to scale via sharding alone.
Zero-knowledge, or validity proof rollups, essentially perform the computations for many thousands of transactions away from Ethereum and then write a tiny cryptographic proof back to the blockchain that verifies those transactions were performed correctly. It’s much faster and cheaper than using…
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