Kadena The Kadena token (KDA) is a digital currency that is used to pay for computation on the Kadena public chain. Similar to ETH on EthereumEthereumEthereum is an open source, public, blockchain-based distributed computing platform and operating system featuring smart contract functionality. It supports a modified version of Nakamoto consensus via transaction-based state transitions.en.wikipedia.org, KDA on Kadena is the token in which miners are compensated for mining blocks on the network and is the transaction fee that users pay in order to have their transactions included in a block.