What is Cardano?
Cardano is a proof-of-stake blockchain platform designed to run smart contracts and decentralized applications. Launched in 2017, it stands out for its research-driven approach: its design is grounded in peer-reviewed academic papers and a methodical, phased development process rather than rushing features to market.
Its native token, ADA, powers the network — paying transaction fees, securing the chain through staking, and giving holders a voice in on-chain governance.
Who created it & why
Cardano was launched in 2017 and co-founded by Charles Hoskinson, who was also one of the co-founders of Ethereum. The goal was to build a blockchain platform whose every component is backed by formal, peer-reviewed academic research — aiming for a more rigorous and sustainable foundation than many earlier projects.
That philosophy is why Cardano is known for its measured, phased roadmap: features are studied and validated before they ship, rather than being released quickly.
How Cardano works
Cardano records transactions on a blockchain — a shared public ledger maintained by a distributed network. A few ideas keep it secure and energy-efficient:
Ouroboros proof of stake
Instead of energy-intensive mining, Cardano uses a proof-of-stake protocol called "Ouroboros." Validators are chosen to add new blocks based on the amount of ADA they have staked, which makes the network far more energy-efficient than proof-of-work chains. Holders can take part by staking their ADA.
Smart contracts & ADA
ADA is the native token used for fees, staking and governance. The network also supports smart contracts, enabling DeFi applications and other decentralized apps to be built on top of it.
A capped supply
Conceptually, ADA's issuance is bounded: the maximum supply is capped at 45 billion ADA. This fixed ceiling gives the token a predictable, finite supply over time.
What it's used for
- Transaction fees: ADA pays for activity on the network.
- Staking: holders stake ADA to help secure the chain and can earn rewards for participating.
- Governance: ADA gives holders a say in how the protocol evolves through on-chain voting.
- Smart contracts & apps: powering DeFi and other decentralized applications built on Cardano.
Strengths & trade-offs
Strengths
- Energy-efficient proof-of-stake (Ouroboros)
- Rigorous, research-based and peer-reviewed approach
- Capped supply of 45 billion ADA
- Active community and on-chain governance
Trade-offs
- Slower, methodical development pace
- Smaller app ecosystem than some rivals
- Adoption is still growing
- Price can be highly volatile
Key takeaways
- Cardano is a proof-of-stake platform launched in 2017, co-founded by Charles Hoskinson.
- It's distinctive for its research-driven, peer-reviewed and phased development approach.
- Its Ouroboros protocol is energy-efficient compared with proof-of-work mining.
- ADA is used for fees, staking and governance, and the chain supports smart contracts.
- Supply is capped at 45 billion ADA, but the price can still be volatile.
Frequently asked questions
What is Cardano in simple terms?
It's a proof-of-stake blockchain platform launched in 2017 and built on peer-reviewed academic research. Its native token, ADA, is used for fees, staking and governance, and the network supports smart contracts.
Who created Cardano?
It was co-founded by Charles Hoskinson, who was also one of the co-founders of Ethereum. Cardano is known for its research-driven, methodical and phased approach to development.
What is Ouroboros?
Ouroboros is Cardano's proof-of-stake consensus protocol. Instead of energy-intensive mining, it selects validators based on staked ADA, making the network energy-efficient.
What is ADA used for?
ADA is Cardano's native token, used to pay transaction fees, to stake and help secure the network, and to take part in on-chain governance. The maximum supply is capped at 45 billion ADA.