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Cardano stack exchange

olga.hryniuk@iohk.io
A community-driven resource providing questions and answers for users and developers of Cardano.
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Certification

olga.hryniuk@iohk.io
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.
1 up votes and 0 down votes. Total score

Cold wallet

olga.hryniuk@iohk.io
An offline wallet used for storing cryptocurrencies. Because cold wallets are not connected to the internet, stored assets incur less risks of tampering. This is also known as cold storage.
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Concurrency

olga.hryniuk@iohk.io
The amount of work that can be done by different actors without blocking each other. Cardano’s EUTXO model allows transactions to be processed in parallel, which ultimately improves the throughput of the system while keeping the performance of individual operations the same.
2 up votes and 0 down votes. Total score

Consensus

olga.hryniuk@iohk.io
A way for a blockchain to agree between all its participants that a transaction is valid. An agreement must be made on which blocks to produce, which chain to adopt, and to determine a single state for the network. The consensus protocol for Cardano is Ouroboros – the first consensus protocol proven to be secure through academic peer review.
1 up votes and 0 down votes. Total score

Controlled stake

olga.hryniuk@iohk.io
The total amount of stake that a stake pool controls. It combines the stake that is owned by the pool operator with any stake that has been delegated to the pool by other ada holders. It can be measured as a total ada amount (e.g., 3 million ada), or as a percentage of the total supply of ada within the network (e.g., 5%).
0 up votes and 0 down votes. Total score

Cost per epoch

olga.hryniuk@iohk.io
A fixed fee, in ada, which the stake pool operator takes from the pool rewards every epoch to cover the costs of running a stake pool. The cost per epoch is subtracted from the total ada rewarded to a pool, before the operator takes their profit margin. Whatever remains is shared proportionally among the delegators.
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Cryptocurrency

olga.hryniuk@iohk.io
An asset on the blockchain that serves as a medium of exchange for goods or services. At its launch, Cardano became the leading proof-of-stake cryptocurrency and one of the top 10 by market capitalization in January 2018. In 2022, it is one of only four coins still in that top 10.
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DApp

olga.hryniuk@iohk.io
A digital (decentralized) application that runs on the blockchain. Just like a mobile app runs on your iOS or Android device, a Cardano DApp runs on the Cardano blockchain. There are various categories of DApps, such as DeFi products, NFT markets, wallets, exchanges, games, and more.
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DApp Store

olga.hryniuk@iohk.io
A website where users will be able to download both certified and uncertified applications that run on the Cardano blockchain. See also Certification.
2 up votes and 0 down votes. Total score

DEX

olga.hryniuk@iohk.io
Decentralized exchange. A type of crypto exchange with no intermediary, where users can securely trade their assets directly with other users.
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Daedalus

olga.hryniuk@iohk.io
A secure wallet for the ada cryptocurrency that manages balances and enables sending and receiving payments. Daedalus is a full node wallet, which means that it downloads a full copy of the Cardano blockchain and independently validates every transaction in its history.
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Datum

olga.hryniuk@iohk.io
A piece of information that can be associated with a UTXO and is used to carry the script state such as its owner or the timing details of when the UTXO can be spent.
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DeFi: decentralized finance

olga.hryniuk@iohk.io
A blockchain-based form of finance that removes the need for intermediaries such as banks, and uses smart contracts to settle deals between parties.
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Decentralization

olga.hryniuk@iohk.io
The property of a system that provides independence from a central governing authority. Cardano is supported by more than 3,000 stake pool operators across the globe who help validate network activities. Peer-to-peer connections and fair governance using Project Catalyst and Voltaire all contribute to Cardano’s decentralization mission.
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Decentralized identifier (DID)

olga.hryniuk@iohk.io
A unique identifier that is not issued or controlled by a central authority. The controller of the DID (in the case of a person, the object of the DID) can prove ownership without requiring permission from any other party.
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Decentralized identity

olga.hryniuk@iohk.io
A system in which users retain control over their identity using a blockchain wallet. This technology ensures data is stored securely and protects privacy rights. Users choose when and with whom they share their identity and credentials, which the requester verifies on the blockchain.
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Delegation

olga.hryniuk@iohk.io
The process whereby ada owners can assign their funds using their wallets to a stake pool. This helps maintain a computer server to run a node on the Cardano network. In exchange, delegators receive a share of the pool’s total rewards. Delegating your ada is totally safe because no ada leaves the user’s wallet.
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Determinism

olga.hryniuk@iohk.io
The predictability of costs for a blockchain transaction. Cardano uses deterministic pricing, which means you know how much a transaction will cost before you make it. Protocol parameters, rather than network traffic, govern pricing on Cardano, so prices remain stable and low. No fees are charged for failed transactions, which differentiates Cardano from ind...
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Djed

olga.hryniuk@iohk.io
Djed is a Cardano stablecoin announced in 2021 and issued by COTI – a crypto payments platform provider.
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