Consensus as a Service
Ardor is a multichain blockchain platform with a unique parent - child chain architecture. The security of the whole network is provided by the parent Ardor chain while the interoperable child chains have all the rich functionality. This elegant design and access to hybrid user permissioning capabilities are the key to the flexibility necessary for a variety of use cases and opens the door towards mainstream adoption of blockchain technology. Not only that - Ardor is created with scalability in mind and solves many existing industry problems such as blockchain bloat, single token dependency and the need for easily customizable-yet-compatible blockchain solutions.
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Ardor uses a 100% proof-of-stake (PoS) consensus algorithm. This protocol allows the platform to be extremely energy efficient and not dependent on expensive hardware. It makes Ardor equally suitable for public and private implementations that easily work on any desktop or mobile device.
Ardor child chains are separate customizable "blockchains" within the Ardor ecosystem. Child chains have their own native tokens and all the built-in features necessary for their specific use case. Enriched functionality, permissioning, or custom parameters can be added if necessary for the child chain operation.
As part of the Ardor ecosystem, all child chains are interconnected and their native tokens can be traded on the built-in fully decentralized coin exchange. In addition, many objects such as assets, account properties, currencies, etc., are "global" for the whole ecosystem and can be accessed from any child chain.
Ardor's architecture allows child chain transactions to be safely removed ("pruned") from the system once they are no longer needed and their hashes are included in the parent chain. Parallel processing of the transactions of different child chains is being researched - to increase the overall network throughput even more.