Binance, the world’s biggest crypto exchange by volume, is seeking to speed up transaction times and reduce fees for its BNB blockchain, becoming one of the largest players yet to embrace a technology known as a zero-knowledge (ZK) rollup.
What Binance effectively announced is a separate blockchain where transactions can be offloaded and processed faster and more cheaply, with the results passed back to BNB. It’s a complicated technology and deploying it in live environments was, until recently, thought to be years out. The fact that Binance is putting its significant weight behind a ZK rollup suggests there might be more advances to the space sooner rather than later. Binance’s decision follows ZK rollups gaining traction in the Ethereum ecosystem.
Binance solutions architect Arnaud Bauer told CoinDesk the upgrade will provide greater security for decentralized application (dapp) transactions and enhance interoperability between chains, which will allow dapps to expand their user bases.
Rollups bundle up transactions, which can be anything from NFT swaps to token trades. They get processed on a layer 2, or companion blockchain, network, which then hands a summary of the results back down to the layer 1 blockchain, in this case, BNB.
There are other kinds of rollups, but developers tend to prefer ZK rollups because they use fancy cryptography to guarantee that the veri they hand back to the layer 1 blockchains hasn’t been tampered with. Computation on layer 2 rollup networks tends to be faster and cheaper than layer 1 chains – making rollups a major boon for user adoption.