Cardano vs Stacks

Cardano uses the Ouroboros Proof‑of‑Stake protocol and an Extended‑UTxO ledger that enables deterministic smart contracts in Plutus and Aiken. Its ‘Basho’ scaling era introduced Hydra Head sidechains capable of 1000 TPS per head, and Mithril light‑client proofs for mobile wallets. Over 1 500 stake pools secure the network and participate in on‑chain treasury governance.

Stacks is a Bitcoin Layer‑2 secured by Proof‑of‑Transfer where miners commit BTC to mint STX and anchor blocks to Bitcoin every 10–15 minutes. Clarity smart contracts enable DeFi with Bitcoin finality, and the sBTC proposal aims to bring a two‑way peg for native BTC on chain. The Nakamoto upgrade scheduled for 2025 will reduce block times to five seconds and add probabilistic Bitcoin finality.