Blockchains

A 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 (viz. 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

thumb|262px|Monthly Ether price in US Dollar|USD Ethereum is a decentralized blockchain with smart contract functionality. Ether (abbreviation: ETH) is the native cryptocurrency of the platform. Among cryptocurrencies, ether is second only to bitcoin in market capitalization. It is open-source software.

unique digital asset recorded on a blockchain that cannot be replicated or exchanged on a like-for-like basis

decentralized, open-source blockchain network that can execute peer-to-peer transactions and serve as a platform for deploying smart contracts

Odysee is an American decentralized video hosting platform, built on the LBRY blockchain. It positions itself as an alternative to mainstream services like YouTube, but with a focus on freedom of speech and decentralization.

Web3 is an idea for a new iteration of the World Wide Web which incorporates concepts such as decentralization, blockchain technologies, tokenomics, and privacy-enhancing technologies. The term is sometimes confused with the Semantic Web, as both have sometimes been referred to as "Web 3.0". 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 "web 3.0" as applied to blockchain technology was coined in 2014 by Ethereum co-founder Gavin Wood, and the idea gained

blockchain platform

cryptocurrency-based funding process

store of digital data spread across multiple sites and synchronized via a consensus algorithm

computer network organization model

change in consensus rules of a blockchain; if contentious, can result in multiple permanent alternative chains

open-source blockchain computing platform

Scalable layer-1 blockchain developed by Telegram, now maintained by the open-source TON Core; designed for high-throughput smart contracts, decentralized applications, and seamless integration with Telegram

Tech company

EOS.IO is a blockchain protocol based on the cryptocurrency EOS. The smart contract platform claims to eliminate transaction fees and also conduct millions of transactions per second. It was developed by the private company Block.one and launched in 2017. The platform was later released as open-source software.

type of computer application

cryptocurrency and cross-blockchain interface that enables cross-blockchain transfers of any type of data or asset, not just tokens

Tezos is an open-source blockchain that can execute peer-to-peer transactions and serve as a platform for deploying smart contracts. The native cryptocurrency for the Tezos blockchain is the tez (ISO 4217: XTZ; sign: ''''''). The Tezos network achieves consensus using proof-of-stake. Tezos uses an on-chain governance model that enables the protocol to be amended when upgrade proposals receive a favorable vote from the community. Its testnet was launched in June 2018, and its mainnet went live in September 2018.

video game that provides digital items using NFT technology

blockchain and cryptocurrency

blockchain and cryptocurrency

LBRY (pronounced "library") is a blockchain-based file-sharing and payment network that is primarily used for social networks and video platforms.

EU regulation on the regulation of crypto assets

Parent company of the SBI group (Japanese financial conglomerate)

Urbit is a decentralized personal server platform based on functional programming in a peer-to-peer network.

government regulation

open-source decentralized computing platform

off-blockchain source of input data for smart contracts

REDIRECT Blockchain#Testnet

L3COS (Level 3 Consensus Operating System) is an algorithm for digitising processes based on Blockchain, which has a three-level structure and is distributed as Platform as a Service for state bodies and businesses. The algorithm is based on the blockchain, in which any decision made at any of the levels will become part of the common chain. The technology involves a three-level framework that provides national governments, businesses, and private individuals with the tools to create a digital economy that does not allow fraudulent activity, financial or otherwise.

is an algorithm used with blockchains that delivers comparatively fast transactions through a consensus mechanism based on identity as a stake

blockchain protocol and payment platform