Blockchain originally block chain is a growing list of records, called blocks, which are linked using cryptography.Each block contains a cryptographic hash of the previous block,a timestamp, and transaction data (generally represented as a merkle treeroot hash).
By design, a blockchain is resistant to modification of the data. It is "an open, distributed ledger that can record transactions between two parties efficiently and in a verifiable and permanent way". For use as a distributed ledger, a blockchain is typically managed by a peer-to-peer network collectively adhering to a protocol for inter-node communication and validating new blocks. Once recorded, the data in any given block cannot be altered retroactively without alteration of all subsequent blocks, which requires consensus of the network majority. Although blockchain records are not unalterable, blockchains may be considered secure by design and exemplify a distributed computing system with high Byzantine fault tolerance. Decentralized consensus has therefore been claimed with a blockchain.
Blockchain was invented by a person using the name Satoshi Nakamoto in 2008 to serve as the public transaction ledger of the cryptocurrency bitcoin. The identity of Satoshi Nakamoto is unknown. The invention of the blockchain for bitcoin made it the first digital currency to solve the double-spending problem without the need of a trusted authority or central server. The bitcoin design has inspired other applications, and blockchains which are readable by the public are widely used by cryptocurrencies. Blockchain is considered a type of payment rail.Private blockchains have been proposed for business use. Sources such as the Computerworld called the marketing of such blockchains without a proper security model "snake oil".
Resources:
1.Blockchain and privacy: Can a form of distributed ledger solve the problem of privacy?
2.New Trending Innovation: Blockchain Explained In Simple Way!
3. What Is Bitcoin And Bitcoin Mining? How Does It Work?
4. Academics Propose a ‘Blockchain University,’ Where Faculty (and Algorithms) Rule
5. Peer-to-peer applications – what are they?
Keyboards: cryptography, blockchain, distributed ledger ,cryptocurrencies ,bitcoin
Comments
Post a Comment