An open-source permissionless blockchain platform built on the Ouroboros proof-of-stake protocol. Cardano was launched in 2017 to address issues with earlier blockchains such as high energy use, limited interoperability, and scalability challenges. Cardano is being developed in five phases: Byron (completed 2019), Shelley (decentralization, 2020), Goguen (sm...
Ada is Cardano’s native currency, which is named after Ada Lovelace, the English mathematician and programmer.
Ada can be used to pay transaction fees on the Cardano network and can also be delegated as stake to a stake pool, helping to secure the Cardano blockchain. Delegating ada allows the user to receive rewards for doing so. All rewards are distributed...
An order book is the method of currency exchange used in traditional markets. In DEXs, an order book method is used to allow users to transfer assets in a decentralized manner. It a list of open buy and sell offers made by users for a specific number of assets. Every buy order needs to be matched with a sell order.
For example, a user makes an offer to sell...
A high level of assurance is key when developing and working with smart contracts and decentralized applications (DApps). Applications in Cardano’s DApp Store will have the option to meet and display up to three levels of certification.
A protocol or platform that allows tokens to be ported from one blockchain to another, where they can be used for payments or to interact with decentralized applications (DApps). Blockchain bridges facilitate chain interoperability and can be either bidirectional or unidirectional. Tokens are locked on their native chain by either sending them to a smart con...
Cardano is a proof-of-stake blockchain and has been estimated to use electricity equivalent to 57 US homes, which can be met by a single wind turbine. The founders of Cardano set out to tackle the unsustainability of proof-of-work blockchains at the outset. In 2021, academics and researchers reckoned that Bitcoin and Ethereum used as much power as a country ...
Every ada holder has a stake in the network that they can delegate to a pool from their wallet. The process is safe because no ada leaves the user’s wallet.
A blockchain that aims to resolve fundamental issues of the first two generations (Bitcoin and Ethereum). Third-generation blockchains focus on improved scalability, interoperability, and self-sustainability. Cardano is a third-generation blockchain.
A computer server running the Cardano node to validate transactions and produce blocks. Each pool holds the combined stake of many ada owners in a single entity, or pool. Rewards earned by the pool are shared between the operator and their stakeholders.
A person or organization that takes responsibility for setting up and keeping the pool running. This usually entails owning or renting a server, holding the key to the pool, and maintaining and monitoring the node.
A cryptocurrency whose value is held constant against one or more other assets. The assets may be a ‘basket’ of currencies, a single currency (eg, the US dollar or the euro), commodities such as gold or silver, stocks, or other cryptocurrencies. Stablecoins include mechanisms that maintain a low deviation from their target price and so are useful to store or...
The primary unit of time used by the Ouroboros algorithm. In current Cardano versions, a slot is exactly one second. Slots that are inhabited by blocks are called active slots. In early 2022, Cardano parameters set one in 20 slots as active, so the average block time is 20 seconds.
A stake pool that has the right to create a block on Cardano within the current slot. The selection process is based on the proportion of ada delegated to each pool.