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| AML | Anti -laundering (AML) refers to the activities intended to prevent individuals from transferring value obtained illegally into a legitimate sources of income.
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| Application | An application is software that runs on your computer or cell phone that allows you to perform certain tasks. Mention Dapps? |
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"A blockchain is a peer-to-peer distributed ledger forged by consensus, combined with a system for "smart contracts" and other assistive technologies". hyperledger.org A blockchain is a chain of blocks each containing transaction (transition) data. Each block, except the first block, is linked with the previous block together forming a chain. Once a block has entered the blockchain, it can not be altered resulting in data immutability . | ||||||||
Byzantine Fault Tolerant Consensus Byzantine Fault Tolerance (BFT) is defined as the feature of a distributed network to reach consensus (agreement on the same value) even when some of the nodes in the network fail to respond or respond with incorrect information. An important consideration to be aware of while setting up a blockchain network is the requirements of Byzantine Fault Tolerant (BFT) consensus, compared with the Crash Fault Tolerant (CFT) one. Due to the underlying complexity of BFT consensus algorithms, a best practice is for the community to leverage the latest academically-proven consensus algorithms based on rigorous and peer-reviewed demonstrations of the safety and liveness properties. Such algorithms include the Tendermint, Algorand, Mir-BFT and HotStuff. There is also some on-going work on Golang-based implementation of the BFT-SMART algorithm for Hyperledger Fabric. These are important reference points for blockchain architects and developers interested in adopting BFT consensus in the future. At Oracle ,we are actively exploring the available options to ensure they meet the rigorous proof requirements as well as deliver operational characteristics, including performance and resilience required in enterprise applications. |
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Certificate Authority
The Certificate Authority (CA) provides a number of certificate services to users of a blockchain. More specifically, these services relate to user enrollment, transactions invoked on the blockchain, and TLS -secured connections between users or components of the blockchain. This guide builds on either the fabric developer’s setup or the prerequisites articulated in the fabric network setup guide. |
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| Chain | A block contains an ordered set of transactions. It is cryptographically linked to the preceding block, and in turn it is linked to be subsequent blocks. The first block in such a chain of blocks is called the genesis block. Blocks are created by the ordering service, and then validated and committed by peers. |
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| Chaincode | Chaincode - Smart contracts in Hyperledger Fabric. A smart contract defines the executable logic that generates new facts that are added to the ledger. A chaincode is typically used by administrators to group related smart contracts for deployment, but can also be used for low level system programming of Fabric,. that manages access and modifications to a set of key-value pairs in the World State via Transaction. In Hyperledger Fabric, smart contracts are packaged as chaincode. Chaincode is installed on peers and then defined and used on one or more channels. A chaincode definition is used by organizations to agree on the parameters of a chaincode before it can be used on a channel. Each channel member that wants to use the chaincode to endorse transactions or query the ledger needs to approve a chaincode definition for their organization. Once enough channel members have approved a chaincode definition to meet the Lifecycle Endorsement policy (which is set to a majority of organizations in the channel by default), the chaincode definition can be committed to the channel. After the definition is committed, the first invoke of the chaincode (or, if requested, the execution of the Init function) will start the chaincode on the channel. |
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| Consensus | A broader term overarching the entire transactional flow, which serves to generate an agreement on the order and to confirm the correctness of the set of transactions constituting a block.
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ERC20 Standards Token is the Ethereum token system ,which is used for Ethereum smart contracts platform. Developed in 2015, ERC-20 defines a common list of rules to function within the Ethereum ecosystem. The Ethereum community created these standards with six mandatory and three optional rules. Mandatory
Optional
Other ERC Token standards for Ref.
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| Ethereum 2.0 (Eth2) is the next phase in the evolution and improvement of the public Ethereum network. With a shift from a Proof of Work to Proof of Stake consensus algorithm, Ethereum 2.0 will result in improved scalability, security, and usability for the network. |
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The Genesis Block is the first block or block zero in any blockchain-based system, It is the prototype of all other blocks in the blockchain network. Based on this which additional blocks are added to form a chain of blocks, hence we call them blockchain. In theory, there is no real need for a Genesis Block. However, it is necessary to have a starting point that everyone can trust. The hash of genesis block is added to all new transactions in a new block. This combination is used to create its unique hash. This process is repeated until all the new blocks are added to a blockchain. Without Genesis Block, it would be really difficult for the participant to trust a blockchain and to know how and when it started. Note : Every block in a blockchain stores a reference to the previous block. In the case of Genesis Block, there is no previous block for reference. Technically it means that the Genesis Block has it’s “previous hash” value set to 0. Which means that no data was processed before the Genesis Block.All other blocks will have sequential numbers starting by 1, and will have a “previous hash” set to the hash of the previous block. |
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| Ledger | a ledger holds facts about the current and historical state of a set of business objects |
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Proof of Stake (PoS) is a class of consensus algorithm that selects and rewards validators as a function of a validator’s economic stake in the network. Unlike PoW, the probability of creating a block in a PoS network is not a result of hash power from burning energy, but rather the result of economic value-at-loss. Proof of Stake will be the consensus mechanism that Ethereum 2.0 uses to maintain the network. Unlike Proof of Work networks, Proof of Stake networks can achieve finality. (consensys) |
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Proof of Work (PoW) is a class of consensus algorithm that rewards miners who expend computational energy to solve mathematical problems to propose new blocks. With PoW, the probability of mining a block and thus receiving block rewards is a function of how much computational energy (known as hash power) a miner expends. Popular blockchains such as Bitcoin, Ethereum (1.0), and Litecoin are all Proof of Work blockchains. ( consensys) |
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What is Stablecoins and how many and how they work?The way Stablecoins achieves by collateralizing other real-world assets and pairing the value to them. As such, the value of stablecoins should never exceed the collateral in reserve, and therefore can (in most cases) be exchanged to the assets they’re pegged to at any time. It's important to know that staple coins or non-mined ones and non pre-mined Instead, their total supply is always changing and reacting to the movements in the market. In order to control inflation, coins are burned when exchanged to the pegged asset. Likewise, when an asset is collateralized, newly created stablecoins enter the market. Several different types of stablecoins currently exist. Even though the underlying principle is the same, the main difference is how a particular stablecoin maintains its value. 1, FIAT- backed Stable Coins , ex : USD $$2, Commodity backed Stable coins , ex : GOLD3, Cryptocurrency-backed stable coins, ex: bitcoin/eththerium4, Seigniorage/Algo backed Stable coins , ex, : no proven example.Ref : https://blog.knowledgesociety.tech/what-is-stablecoins-and-how-do-they-work/ |
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September 21,2020
Ethereum: Decentralized open-source blockchain that features smart contract functionalities.
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https://nvlpubs.nist.gov/nistpubs/ir/2020/NIST.IR.8301-draft.pdf
Terminology
A project is an active entity that has project member(s) and produces project result(s). Its member(s) use project sites to coordinate and disseminate result(s). A project does not need to be a formal legal entity. Key terms relating to project are:
- Project members are the group of one or more people or companies who work together to attempt to produce project results. Some FLOSS projects may have different kinds of members, with different roles, but that's outside our scope.
- Project results are what the project members work together to produce as their end goal. Normally this is software, but project results may include other things as well. Criteria that refer to "software produced by the project" are referring to project results.
- Project sites are the sites dedicated to supporting the development and dissemination of project results, and include the project website, repository, and download sites where applicable (see sites_https).
- The project website, aka project homepage, is the main page on the world wide web (WWW) that a new user would typically visit to see information about the project; it may be the same as the project's repository site (this is often true on GitHub).
- The project repository manages and stores the project results and revision history of the project results. This is also referred to as the project source repository, because we only require managing and storing of the editable versions, not of automatically generated results (in many cases generated results are not stored in a repository).
blockchain; cryptoasset; cryptocurrency; data portability; decentralized governance; digital asset;
106 digital token; distributed ledger; fintech; off-chain scaling; self-hosting; smart contract; state
107 channel; tokenization; transaction confidentiality; verifiable data; wallet; zero-knowledge proof.
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