This article was first published on Ardor Ignis Blockchains - Scalable, Proven Blockchain-as-a-Service
The main difference between an Ardor child chain and a Lisk sidechain lies in the transaction validation process. A Lisk sidechain must have its own set of nodes to secure it, while on Ardor every node validates child chain transactions and is secured by the Ardor parent chain.
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Ardor Ignis Blockchains - Scalable, Proven Blockchain-as-a-Service