Cardano is one of the biggest cryptocurrencies by market cap. It’s designed to be a flexible, sustainable, and scalable blockchain platform for running smart contracts — which will allow the development of a wide range of decentralized finance apps, new crypto tokens, games, and more.
Cardano’s goal is to be the most environmentally sustainable blockchain platform. It uses a unique proof-of-stake consensus mechanism called Ouroboros, as opposed to the energy-intensive proof-of-work system currently used by Bitcoin and Ethereum.
The Cardano blockchain is also divided into two separate layers: the Cardano Settlement Layer (CSL) and the Cardano Computing Layer (CCL). The CSL contains the ledger of accounts and balances (and is where the transactions are validated by the Ouroboros consensus mechanism). The CCL layer is where all the computations for apps running on the blockchain are executed — via the operations of smart contracts.

On March 1, 2021, the Cardano blockchain introduced the ability to create native tokens. Like Ethereum tokens — which can include things like NFTs or stablecoins like USD Coin — Cardano native assets can be created and distributed on the blockchain and are able to interact with smart contracts. But unlike Ethereum-based tokens, Cardano native tokens aren’t created via smart contract. Instead, they run on the same architecture as the ADA cryptocurrency itself. According to the nonprofit Cardano Foundation, this makes Cardano native assets “first-class citizens” on the blockchain. Their native architecture can theoretically make these tokens more secure and reduce the fees associated with transactions.