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About Cardano
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Frequently Asked Questions
Voltaire is Cardano’s governance phase, activated through the Chang hard fork (2024) and further extended by the Plomin hard fork. It introduced on-chain governance via CIP-1694, allowing ADA holders to vote on protocol parameter changes, treasury withdrawals, and constitutional amendments. The Plomin fork gave full voting power to delegated representatives (DReps) and the Constitutional Committee, completing the transition away from IOG/Emurgo/CF controlling upgrades.
Hydra is Cardano’s isomorphic state channel protocol. “Isomorphic” means the off-chain Hydra head runs the same Plutus smart contract logic as the main chain, enabling arbitrary off-chain computation with the same programmability. Hydra heads are opened between a fixed set of participants, process transactions off-chain at theoretical throughputs of 1M+ TPS per head, then settle final state on-chain. The limitation: it is not a general-purpose rollup; it requires predefined participants and is better suited for specific use cases (payment channels, gaming, auctions) than open user access.
DReps (Delegated Representatives) are on-chain entities to whom ADA holders delegate their voting power. ADA holders can either vote directly or delegate to a DRep whose governance philosophy aligns with theirs. This is liquid democracy: the ability to delegate and undelegate at any time, with delegation following stake. The system also includes the Constitutional Committee (a 7-of-9 multisig-style body) as a constitutional check on governance actions.
Cardano’s development philosophy routes all protocol changes through academic peer review before implementation. IOG (Input Output Global) publishes papers on Ouroboros (PoS consensus), Plutus (smart contract language), and other components in formal academic venues. The tradeoff is slower iteration velocity compared to Ethereum’s EIP process or Solana’s move-fast approach. The thesis: correctness and formal verification reduce the probability of catastrophic bugs. The counterargument: the bottleneck has historically been developer adoption and ecosystem velocity, not security.
The Cardano Constitution is an on-chain document that governs how the network can be changed and what values guide governance decisions. Ratification required a global Constitutional Convention with representatives from across the ecosystem and a 75% supermajority vote. It acts as a meta-governance layer: proposed governance actions must be compatible with the Constitution or they can be vetoed by the Constitutional Committee.