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Polkadot (blockchain Platform)
Polkadot is a decentralized, nominated proof-of-stake blockchain with smart contract functionality. The cryptocurrency native to the blockchain is the DOT. It is designed to allow blockchains to exchange messages and perform transactions with each other without a trusted third-party. This allows for cross-chain transfers of data or assets, between different blockchains, and for decentralized applications (DApps) to be built using the Polkadot Network. History Founding and ICO (2016–2019) Polkadot was created by the Ethereum co-founder Gavin Wood, Robert Habermeier and Peter Czaban. The white paper for Polkadot was published by Wood in 2016. The Polkadot SDK and other core technology components are being developed by Parity Technologies. The project raised over $144.3 million in its Initial coin offering in October 2017. In 2017, Gavin Wood, Aeron Buchanan, Peter Czaban, Reto Trinkler, and Mathias Bucher, established the Web3 Foundation, a non-profit organization based i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gavin Wood
Gavin James Wood is an English computer scientist, a co-founder of Ethereum, and creator of Polkadot and Kusama. Early life Wood was born in Lancaster, England, United Kingdom. He attended the Lancaster Royal Grammar School. He graduated from the University of York with a Master of Engineering (MEng) in Computer Systems and Software Engineering in 2002 and completed his PhD entitled "Content-based visualization to aid common navigation of musical audio" in 2005. Career Before working on Ethereum, Wood was a research scientist at Microsoft. He was one of the founders of the Ethereum blockchain, which he has described as "one computer for the entire planet," with Vitalik Buterin, Charles Hoskinson, Anthony Di Iorio, and Joseph Lubin during 2013–2014. Wood proposed and helped develop Solidity, a programming language for writing smart contracts. He also released the paper defining the Ethereum Virtual Machine, the runtime system for smart contracts in Ethereum, in 2014. He a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Web3 Foundation
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. This is distinct from Tim Berners-Lee's concept of the Semantic Web. Some technologists and journalists have contrasted it with Web 2.0, in which they say user-generated content is controlled by a small group of companies 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. The concepts of web3 were first represented in 2013. Critics have expressed concerns over the centralization of wealth to a small group of investors and individuals, or a loss of privacy due to more expansive data collection. Billionaires like Elon Musk and Jack Dorsey have argued that web3 only serves as a buzzword or marketing term. Background Web 1.0 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cryptocurrencies
A cryptocurrency (colloquially crypto) is a digital currency designed to work through a computer network that is not reliant on any central authority, such as a government or bank, to uphold or maintain it. Individual coin ownership records are stored in a digital ledger or blockchain, which is a computerized database that uses a consensus mechanism to secure E-commerce, transaction records, control the creation of additional coins, and verify the transfer of coin ownership. The two most common consensus mechanisms are proof of work and proof of stake. Despite the name, which has come to describe many of the fungibility, fungible blockchain tokens that have been created, cryptocurrencies are not considered to be Currency, currencies in the traditional sense, and varying legal treatments have been applied to them in various jurisdictions, including classification as Commodity, commodities, Security (finance), securities, and currencies. Cryptocurrencies are generally viewed as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blockchains
The blockchain is a distributed ledger with growing lists of records (''blocks'') that are securely linked together via cryptographic hashes. Each block contains a cryptographic hash of the previous block, a timestamp, and transaction data (generally represented as a Merkle tree, where data nodes are represented by leaves). Since each block contains information about the previous block, they effectively form a ''chain'' (compare linked list data structure), with each additional block linking to the ones before it. Consequently, blockchain transactions are resistant to alteration because, once recorded, the data in any given block cannot be changed retroactively without altering all subsequent blocks and obtaining network consensus to accept these changes. Blockchains are typically managed by a peer-to-peer (P2P) computer network for use as a public distributed ledger, where nodes collectively adhere to a consensus algorithm protocol to add and validate new transaction bloc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Blockchains ...
This is a list of blockchains - decentralized, cryptographic databases - and other distributed ledgers. List See also * Blockchains * List of cryptocurrencies References General refs * https://arxiv.org/pdf/1708.05665.pdf {{DEFAULTSORT:Blockchains Blockchains Blockchains The blockchain is a distributed ledger with growing lists of records (''blocks'') that are securely linked together via cryptographic hashes. Each block contains a cryptographic hash of the previous block, a timestamp, and transaction data (g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Cryptocurrencies
Since the creation of bitcoin in 2009, the number of new cryptocurrencies has expanded rapidly. The UK's Financial Conduct Authority The Financial Conduct Authority (FCA) is a financial regulatory body in the United Kingdom. It operates independently of the UK Government and is financed by charging fees to members of the financial services industry. The FCA regulates financi ... estimated there were over 20,000 different cryptocurrencies by the start of 2023, although many of these were no longer traded and would never grow to a significant size. Active and inactive currencies are listed in this article. Active currencies by date of introduction Inactive currencies See also * List of digital currencies * Cryptojacking Notes References {{Portal bar, Lists, Money, Numismatics ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sybil Attack
A Sybil attack is a type of attack on a computer network service in which an attacker subverts the service's reputation system by creating a large number of pseudonymous identities and uses them to gain a disproportionately large influence. It is named after the subject of the book '' Sybil'', a case study of a woman diagnosed with dissociative identity disorder. The name was suggested in or before 2002 by Brian Zill at Microsoft Research. The term pseudospoofing had previously been coined by L. Detweiler on the Cypherpunks mailing list and used in the literature on peer-to-peer systems for the same class of attacks prior to 2002, but this term did not gain as much influence as "Sybil attack". Description The Sybil attack in computer security is an attack wherein a reputation system is subverted by creating multiple identities. A reputation system's vulnerability to a Sybil attack depends on how cheaply identities can be generated, the degree to which the reputation system accept ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ouroboros (protocol)
Ouroboros is a family of proof-of-stake consensus protocols used in the Cardano and Polkadot blockchains. It can run both permissionless and permissioned blockchains. Ouroboros was published as "the first provable secure PoS consensus protocol". It was postulated by an academic team led by Aggelos Kiayias at the Annual International Cryptology Conference in 2017. Later that year, Ouroboros (Classic) was implemented by IOHK as the basis of the Cardano blockchain platform and various upgrades. Ouroboros versions include: * Ouroboros BFT was an interim version used in 2020 to enable the switch between the Classic and Praos versions of Cardano using a hard fork combinator that preserved the blockchain history; * Ouroboros Praos (2017) provided security against fully-adaptive corruption in the semi-synchronous model. At team at Cornell University discussed Ouroboros Praos and their own provably secure proof-of-stake protocol called Snow White. In 2020, Praos was used to introd ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phragmen's Voting Rules
Phragmén's voting rules are rules for multiwinner voting. They allow voters to vote for individual candidates rather than parties, but still guarantee proportional representation. They were published by Lars Edvard Phragmén in French and Swedish between 1893 and 1899, and translated to English by Svante Janson in 2016. Background In multiwinner approval voting, each voter can vote for one or more candidates, and the goal is to select a fixed number ''k'' of winners (where ''k'' may be, for example, the number of parliament members). The question is how to determine the set of winners? * The simplest method is ''multiple non-transferable vote'', in which the ''k'' candidates with the largest number of approvals are elected. But this method tends to select ''k'' candidates of the largest party, leaving the smaller parties with no representation at all. * In the 19th century, there was much discussion regarding election systems that could guarantee proportional representatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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] |
Software Development Kit
A software development kit (SDK) is a collection of software development tools in one installable package. They facilitate the creation of applications by having a compiler, debugger and sometimes a software framework. They are normally specific to a hardware platform and operating system combination. To create applications with advanced functionalities such as advertisements, push notifications, etc; most application software developers use specific software development kits. Some SDKs are required for developing a platform-specific app. For example, the development of an Android app on the Java platform requires a Java Development Kit. For iOS applications (apps) the iOS SDK is required. For Universal Windows Platform the .NET Framework SDK might be used. There are also SDKs that add additional features and can be installed in apps to provide analytics, data about application activity, and monetization options. Some prominent creators of these types of SDKs include Google, Sm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Several Polkadot Relays
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