Ardor (ARDR) is a coin running on the NXT blockchain using the Proof of Stake protocol. It is a hardfork of the NXT blockchain and the Ardor genesis snapshot was taken at block height 1636363 on the parent blockchain. The Ardor blockchain offers several improved features such as the existence of multiple blockchains (child chains) on the main chain. The child chain can be created independently and be privately owned. The single security blockchain (ARDR) bundled with several child chains offers three advantages i.e. giving multiple tokens for transactions, reduces the blockchain bloat and interoperable ready to use child chains.

Ardor blockchain is developed by the Jelurida B.V. company lead by Lior Yaffe.. The same company founded the NXT blockchain.

The purpose of Ardor is to provide a platform for large organizations or small and medium industries to shift on blockchain easily using the child chains with ready to use features. Child chains provide robust security of the parent Ardor chain while it is customizable according to individual needs.