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Bitcoin, Ethereum, Litecoin, and a few others count as layer 1 blockchains and belong to the old generation of blockchain technologies, with one succeeding the other. Lightning Network is a layer 2 solution designed to address scalability on the Bitcoin blockchain. ZK Rollups are smart contracts that collate several transactions off-chain, creating a.cryptographic proof. They inherit the security infrastructure of the main network or layer 1, leaving no room for vulnerability. Lightning network relieves the main chain of the time and effort it takes to process each transaction.