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Distributed Ledger
A distributed ledger (also called a shared ledger or distributed ledger technology or DLT) is the consensus of replicated, shared, and synchronized digital data that is geographically spread (distributed) across many sites, countries, or institutions. In contrast to a centralized database, a distributed ledger does not require a central administrator, and consequently does not have a single (central) point-of-failure. In general, a distributed ledger requires a peer-to-peer (P2P) computer network and consensus algorithms so that the ledger is reliably replicated across distributed computer nodes (servers, clients, etc.). The most common form of distributed ledger technology is the blockchain (commonly associated with the Bitcoin cryptocurrency), which can either be on a public or private network. Infrastructure for data management is a common barrier to implementing DLT. In some cases, where the distributed digital information functions as an accounting journal rather than an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Government Office For Science
The Government Office for Science is an science advisory group that is part of the British government. The organisation advises the UK Government on policy and decision-making based on science and long-term thinking. It is led by the Government Chief Scientific Adviser (GCSA), Sir Patrick Vallance who reports to the prime minister and Cabinet. The office is based in the Department for Business, Energy and Industrial Strategy where it works with other parts of the Department, including the Science and Research Group, which funds research through Research Councils. Networking The Government Office for Science works collaboratively, using formal and informal networks, including colleagues in other departments and external experts. Together, they create and promote guidance and frameworks describing how departments can use the natural and social sciences, engineering and medicine to provide a sound evidence base for making policy. The guidance and frameworks encourage and support d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Directed Acyclic Graphs
In mathematics, particularly graph theory, and computer science, a directed acyclic graph (DAG) is a directed graph with no directed cycles. That is, it consists of vertices and edges (also called ''arcs''), with each edge directed from one vertex to another, such that following those directions will never form a closed loop. A directed graph is a DAG if and only if it can be topologically ordered, by arranging the vertices as a linear ordering that is consistent with all edge directions. DAGs have numerous scientific and computational applications, ranging from biology (evolution, family trees, epidemiology) to information science (citation networks) to computation (scheduling). Directed acyclic graphs are sometimes instead called acyclic directed graphs or acyclic digraphs. Definitions A graph is formed by vertices and by edges connecting pairs of vertices, where the vertices can be any kind of object that is connected in pairs by edges. In the case of a directed graph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Accounting Journals And Ledgers
Accounting, also known as accountancy, is the measurement, processing, and communication of financial and non financial information about economic entities such as businesses and corporations. Accounting, which has been called the "language of business", measures the results of an organization's economic activities and conveys this information to a variety of stakeholders, including investors, creditors, management, and regulators. Practitioners of accounting are known as accountants. The terms "accounting" and "financial reporting" are often used as synonyms. Accounting can be divided into several fields including financial accounting, management accounting, tax accounting and cost accounting. Financial accounting focuses on the reporting of an organization's financial information, including the preparation of financial statements, to the external users of the information, such as investors, regulators and suppliers; and management accounting focuses on the measurement, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Web3
Web3 (also known as Web 3.0) is an idea for a new iteration of the World Wide Web which incorporates concepts such as decentralization, blockchain technologies, and token-based economics. Some technologists and journalists have contrasted it with Web 2.0, wherein they say data and content are centralized in a small group of companies sometimes referred to as "Big Tech". The term "Web3" was coined in 2014 by Ethereum co-founder Gavin Wood, and the idea gained interest in 2021 from cryptocurrency enthusiasts, large technology companies, and venture capital firms. Commentators associated with the Open Rights Group argue that Web3 will provide increased data security, scalability, and privacy for users and combat the influence of large technology companies. They also raise concerns about the decentralized web component of Web3, citing the potential for low moderation and the proliferation of harmful content. Some have expressed concerns over the centralization of wealth to a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Eventual Consistency
Eventual consistency is a consistency model used in distributed computing to achieve high availability that informally guarantees that, if no new updates are made to a given data item, eventually all accesses to that item will return the last updated value. Eventual consistency, also called optimistic replication, is widely deployed in distributed systems and has origins in early mobile computing projects. A system that has achieved eventual consistency is often said to have converged, or achieved replica convergence. Eventual consistency is a weak guarantee – most stronger models, like linearizability, are trivially eventually consistent. Eventually-consistent services are often classified as providing BASE semantics (basically-available, soft-state, eventual consistency), in contrast to traditional ACID (atomicity, consistency, isolation, durability). In chemistry, a base is the opposite of an acid, which helps in remembering the acronym. According to the same resource, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Cryptoeconomics
Cryptoeconomics is an evolving economic paradigm for a cross-disciplinary approach to the study of digital economies and Decentralized finance (DeFi) applications. Cryptoeconomics integrates concepts and principles from traditional economics, cryptography, computer science, and game theory disciplines. Just as traditional economics provides a theoretical foundation for traditional financial (a.k.a., Centralized Finance or CeFi) services, cryptoeconomics provides a theoretical foundation for DeFi services bought and sold via fiat cryptocurrencies, and executed by smart contracts. Definitions and goals The term ''cryptoeconomics'' was coined by the Ethereum community during its formative years (2014-2015), but was initially inspired by the application of economic incentives in the original Bitcoin protocol in 2008. Although the phrase is typically attributed to Vitalik Buterin, the earliest public documented usage is a 2015 talk by Vlad Zamfir entitled "What is Cryptoeconomics ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Decentralized Finance
Decentralized finance (often stylized as DeFi) offers financial instruments without relying on intermediaries such as brokerages, exchanges, or banks by using smart contracts on a blockchain. DeFi platforms allow people to lend or borrow funds from others, speculate on price movements on assets using derivatives, trade cryptocurrencies, insure against risks, and earn interest in savings-like accounts. DeFi uses a layered architecture and highly composable building blocks. Some applications promote high interest rates but are subject to high risk. History Decentralized exchanges (abbreviated DEXs) are alternative payment ecosystems with new protocols for financial transactions that emerged within the framework of decentralized finance, which is part of blockchain technology and FinTech. CEXs, DEXs and DEX aggregators are all built on the multi-layered DeFi architecture or components, where each layer serves a well-defined purpose. (See Figure: ''Multi-layered Architecture o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Hyperledger
Hyperledger (or the Hyperledger Project) is an umbrella project of open source blockchains and related tools, started in December 2015 by the Linux Foundation, and has received contributions from IBM, Intel and SAP Ariba, to support the collaborative development of blockchain-based distributed ledgers. It was renamed Hyperledger Foundation in October 2021. History and aims In December 2015, the Linux Foundation announced the creation of the Hyperledger Project. The founding members of the project were announced in February 2016 and ten further members and the makeup of the governing board were announced March 29. On May 19, Brian Behlendorf was appointed executive director of the project. The objective of the project is to advance cross-industry collaboration by developing blockchains and distributed ledgers, with a particular focus on improving the performance and reliability of these systems (as compared to comparable cryptocurrency designs) so that they are capable of s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Hashgraph
Hashgraph is a distributed ledger technology that has been described as an alternative to blockchains. The hashgraph technology is currently patented, is used by the public ledger Hedera, and there is a grant to implement the patent as a result of the Apache 2.0's Grant of Patent License (provision #3) so long as the implementation conforms to the terms of the Apache license. The native cryptocurrency of the Hedera Hashgraph system is HBAR. Unlike blockchains, hashgraphs do not bundle data into blocks or use miners to validate transactions. Instead, hashgraphs use a "gossip about gossip" protocol where the individual nodes on the network "gossip" about transactions to create directed acyclic graphs that time-sequence transactions. Each "gossip" message contains one or more transactions plus a timestamp, a digital signature, and cryptographic hashes of two earlier events. This makes Hashgraph form an asynchronous Byzantine Fault-Tolerant (aBFT) consensus algorithm. Hashgraph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Secure Hash Algorithms
The Secure Hash Algorithms are a family of cryptographic hash functions published by the National Institute of Standards and Technology (NIST) as a U.S. Federal Information Processing Standard (FIPS), including: * SHA-0: A retronym applied to the original version of the 160-bit hash function published in 1993 under the name "SHA". It was withdrawn shortly after publication due to an undisclosed "significant flaw" and replaced by the slightly revised version SHA-1. * SHA-1: A 160-bit hash function which resembles the earlier MD5 algorithm. This was designed by the National Security Agency (NSA) to be part of the Digital Signature Algorithm. Cryptographic weaknesses were discovered in SHA-1, and the standard was no longer approved for most cryptographic uses after 2010. * SHA-2: A family of two similar hash functions, with different block sizes, known as ''SHA-256'' and ''SHA-512''. They differ in the word size; SHA-256 uses 32-bit words where SHA-512 uses 64-bit words. There ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Solana (blockchain Platform)
Solana is a public blockchain platform with smart contract functionality. Its native cryptocurrency is SOL. History Solana was proposed in a white paper Anatoly Yakovenko published in November 2017. This paper described a technique called "proof of history". On 16 March, 2020, Solana's first block was created. In June 2021, Solana raised a $314 million funding round led by Andreessen Horowitz. In December 2021, Melania Trump released her first NFT which was reportedly sold for 1 SOL. A Solana representative said that Trump's use of the blockchain was not part of any Solana-led initiative. On 3 August, 2022, it was announced that the Solana ecosystem had been targeted by hackers, affecting 9,231 Solana wallets. Four Solana wallet addresses took approximately $4.1 million in total from victims. All wallets affected were at one point created, imported, or used in the Slope wallet applications on iOS and Android. Security researchers discovered that Slope wallet sent sensitive acc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Cardano (blockchain Platform)
Cardano is a public blockchain platform. It is open-source and decentralized, with consensus achieved using proof of stake. It can facilitate peer-to-peer transactions with its internal cryptocurrency, ADA. Cardano's development began in 2015, led by Ethereum co-founder Charles Hoskinson. The project is overseen and supervized by the Cardano Foundation based in Zug, Switzerland. When launched in 2017, it was the largest cryptocurrency to use a proof-of-stake blockchain, which is seen as a greener alternative to proof-of-work protocols. Background Charles Hoskinson and Jeremy Wood set out their plans for Cardano in 2015, with the platform launching in 2017. Hoskinson had left Ethereum after a dispute with another co-founder, Vitalik Buterin. Hoskinson wanted to accept venture capital and create a company, while Buterin wanted to keep it as a nonprofit organization. After leaving, Hoskinson co-founded IOHK, a blockchain-engineering company, whose primary business is the de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |