Wiki Tag: Blockchain

Cryptographic Hash

Posted on by Tony

A cryptographic hash function is a hash function that satisfies the properties of pre-image resistance, second pre-image resistance and collision resistance. Here, a hash function is a mathematical algorithm that maps data of an arbitrary size (or “message”) to a bit array of a fixed size (the “hash value”, “hash”, or “message digest”), that is,
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Cryptocurrency

Posted on by David Yang

A cryptocurrency (or for short) is a digital currency secured by cryptography, usually based on . Blockchains ensure the integrity and immutability of the transactional data for the cryptocurrencies. Decentralized blockchain networks are an essential component of many cryptocurrencies. It is nearly impossible to counterfeit or double-spend cryptocurrency. Cryptocurrencies are usually not issued by any
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Bitcoin

Posted on by David Yang

The world’s first  and network without requiring a trusted third party for electronic peer-to-peer BTC transactions. is the on the Bitcoin blockchain network. The BTC cryptocurrency was invented in 2008 by Satoshi Nakamoto which is an unknown person or a group of people. The implementation was released as open-source software and the usage starts in
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Blockchain

Posted on by David Yang

What is blockchain? Blockchain is a specific type of database with special data organization and properties. Blockchains store data in blocks that are then **** together in the chronological order one by one, with the block chained onto the previous block. Data commonly stored in blockchains are transactions for . The transactions are chained together
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