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Utility token

olga.hryniuk@iohk.io
A digital token that holds certain functionality in regard to a concrete project or environment. These tokens can be used as payment units, rewards, or grant access to a specific network.
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Security token

olga.hryniuk@iohk.io
A digital asset that derives its value from an external asset that can be traded. Usually, it represents stocks, bonds, or revenue participation notes. Security tokens are subject to federal law governing regulations.
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Saturation

olga.hryniuk@iohk.io
A term used to indicate that a particular stake pool has more stake delegated to it than is ideal for the network. Saturation is displayed as a percentage. Once a stake pool reaches 100% saturation, it will offer diminishing rewards. The saturation mechanism was designed to prevent centralization by encouraging delegators to delegate to different stake pools...
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Redeemer

olga.hryniuk@iohk.io
A piece of information that can be associated with a UTXO and attached to the input transaction to unlock funds from a script.
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Performance

olga.hryniuk@iohk.io
A measure of the efficiency of a stake pool, given as a percentage, is measured by how many blocks the stake pool has produced (and that are recorded on the main chain) compared to how many it was nominated to produce. For example, if a pool only produces half the number of blocks that were nominated, its performance rating is 50%. This could happen because ...
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Merkle tree

olga.hryniuk@iohk.io
A data structure used in blockchain applications to encode data in a secure and efficient way. The Merkle tree allows a block of transactions to be generated in a single hash, which is used to verify its validity to the original set of transactions. Using hashes is time efficient and does not require the validation of every transaction from the chain history...
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Key pair

olga.hryniuk@iohk.io
A set of two keys: public verification key and private signing key. These keys are used to process and approve transactions within the blockchain.
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Incentive

olga.hryniuk@iohk.io
A way to encourage participants in the system to engage in the network by rewarding them with a return that is proportional to their efforts. Incentives aim to ensure equality and fairness in a distributed network of participants by encouraging consistent, active, and strong participation. Cardano's incentives model uses game theory to calculate the incentiv...
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Faucet

olga.hryniuk@iohk.io
A web-based service that provides free tokens for testnets. Cardano testnets faucet can be found here.
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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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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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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%).
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CFD

olga.hryniuk@iohk.io
Contract for difference. Part of a wider group of trading products known as derivatives, they are a popular method of trading stocks, bonds, and commodities.
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Adrestia

olga.hryniuk@iohk.io
Adrestia is a collection of products that simplify integration with Cardano. It is made of several application programming interfaces (APIs), command-line interfaces (CLIs), and software development kits (SDKs). Alternatively, Adrestia may also refer to the team working on the project itself.
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Address

olga.hryniuk@iohk.io
A data structure used in transaction outputs to convey various pieces of information. All addresses carry a network-discriminant tag to distinguish between different networks (e.g., mainnet or testnet) and a proof of ownership (i.e., a proof of who owns the transaction output). Some addresses also carry delegation choices or script references.
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Cardano Cube

Milan Houter
An online explorer that shows you all the projects and DApps building on the Cardano blockchain. Use the Cardano Cube interactive ecosystem map to get a quick overview of all the projects.
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NFT Calendar

nftsailingnet
An online platform designed to help users discover non-fungible tokens (NFTs), find the new NFTs early, and analyze the most promising projects.
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Quantum computing

Ivan Irakoze
A fast-developing technology that uses the principles of quantum physics to solve issues that are too complicated for conventional computers.
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Jormungandr

Ivan Irakoze
A Rust-coded node implementation with the goal of supporting Ouroboros-based consensus protocols.
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Vasil

Ivan Irakoze
A protocol upgrade to the Cardano blockchain that will be implemented using Cardano’s HFC approach. Its objective is to make the blockchain more robust and scalable, increasing throughput and reducing latency in block transmission. The Vasil hard fork combinator will see the implementation of block diffusion pipelining and adds reference inputs, inline datu...
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