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A multiple choice question, with days of the week as potential answers. Multiple choice (MC), [1] objective response or MCQ(for multiple choice question) is a form of an objective assessment in which respondents are asked to select only the correct answer from the choices offered as a list.
A blockchain was created by a person (or group of people) using the name (or pseudonym) Satoshi Nakamoto in 2008 to serve as the public distributed ledger for bitcoin cryptocurrency transactions, based on previous work by Stuart Haber, W. Scott Stornetta, and Dave Bayer. [8] The implementation of the blockchain within bitcoin made it the first ...
A diagram of a bitcoin transfer. The bitcoin protocol is the set of rules that govern the functioning of bitcoin.Its key components and principles are: a peer-to-peer decentralized network with no central oversight; the blockchain technology, a public ledger that records all bitcoin transactions; mining and proof of work, the process to create new bitcoins and verify transactions; and ...
In fact, blockchain technology reduces the costs for conducting of a lottery and is therefore beneficial for the participants. Randomness on blockchain can be implemented by using block hashes or timestamps, oracles, commitment schemes, special smart contracts like RANDAO [ 40 ] [ 41 ] and Quanta, as well as sequences from mixed strategy Nash ...
First and most well-known blockchain of all; BTC is the most valuable token in terms of market share. [1] [2] Litecoin: Oct 8, 2011 Charlie Lee LTC PoW: Yes (scripts) Yes [1] [3] Peercoin: Aug 19, 2012 PPC PoW: Yes (scripts) No [1] [4] Primecoin: Jul 7, 2013 Sunny King XPM PoW: Work is finding long Cunningham chains of prime numbers: MazaCoin ...
The Solana blockchain again went offline on 1 May, with the outage lasting roughly seven hours due to it being taken offline by bots. [25] The blockchain went offline again on 31 May 2022, due to a bug in how the blockchain processes offline transactions. This outage lasted about four and a half hours. [26] [27] [28]
For example, the blockchain data could, in principle and if regulatory structures permit it, replace public documents such as deeds and titles. [2]: 42 [3] In theory, a blockchain approach allows multiple cloud computing users to enter a loosely coupled peer-to-peer smart contract collaboration. [2]: 42 [12]
A key aspect of privacy in blockchains is the use of private and public keys.Blockchain systems use asymmetric cryptography to secure transactions between users. [7] In these systems, each user has a public and private key. [7]