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Cardano / Tether USD
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Cardano is an open-source, smart-contract platform that aims to provide multiple features through layered design. Its modularization will eventually allow for network delegation, sidechains, and light client data structures. Cardano uses a version of Proof-of-Stake (PoS) called Ouroboros to secure the network and manage the block production process. The network features a native token called ADA that gives stakers a claim on new issuance in proportion to their holdings and allows users to pay for transactions. The Cardano blockchain has two layers: a settlement layer and a computation layer. The Cardano Settlement Layer (CSL) serves to settle transactions made by peers in the network with ADA, Cardano's native currency. The Cardano Computation Layer (CCL) is optimized to support smart contracts and decentralized applications. Cardano developers chose a layered protocol to increase the network's capacity for protocol changes and soft fork implementations. Cardano is developed in Haskell and Cardano smart contracts are created in Plutus, another programming language that allows for building stricter contracts.