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His 1982 dissertation "Computer Systems Established, Maintained, and Trusted by Mutually Suspicious Groups" is the first known proposal for a blockchain protocol. [1] Complete with the code to implement the protocol, Chaum's dissertation proposed all but one element of the blockchain later detailed in the Bitcoin whitepaper.
CryptoNote is an application layer protocol designed for use with cryptocurrencies that aims to solve specific problems identified in Bitcoin. [1] [2]The protocol powers several decentralized privacy-oriented cryptocurrencies, including Monero, [3] Zano, [4] MobileCoin and Safex Cash.
A blockchain has been described as a value-exchange protocol. [24] A blockchain can maintain title rights because, when properly set up to detail the exchange agreement, it provides a record that compels offer and acceptance. [citation needed] Logically, a blockchain can be seen as consisting of several layers: [25] infrastructure (hardware)
A hash chain is similar to a blockchain, as they both utilize a cryptographic hash function for creating a link between two nodes. However, a blockchain (as used by Bitcoin and related systems) is generally intended to support distributed agreement around a public ledger (data), and incorporates a set of rules for encapsulation of data and ...
The Lightning Network continues to make news and <i>Bitcoin Magazine’</i>s latest cover story looks at what the future might hold for the innovative technology. Also new this week, BTC Media’s ...
GxHash [10] 32, 64 or 128 bits AES block cipher pHash [11] fixed or variable see Perceptual hashing: dhash [12] 128 bits see Perceptual hashing: SDBM [2] [13] 32 or 64 bits mult/add or shift/add also used in GNU AWK: OSDB hash [14] 64 bits add komihash [15] 64 bits product/split/add/XOR
By April 2018, a number of articles erroneously stated that X-Road is a "blockchain-based technology or it utilizes blockchain internally". [ 12 ] [ 13 ] According to an April 18, 2018 article by Petteri Kivimäki the CTO of the Nordic Institute for Interoperability Solutions (NIIS), [ 14 ] "There is no blockchain technology in the X-Road."
Notes 2009 Bitcoin: BTC, [3] XBT, ₿ Satoshi Nakamoto: SHA-256d [4] [5] C++ [6] PoW [5] [7] The first and most widely used decentralized ledger currency, [8] with the highest market capitalization as of 2018. [9] 2011 Litecoin: LTC, Ł Charlie Lee: Scrypt: C++ [10] PoW: One of the first cryptocurrencies to use scrypt as a hashing algorithm ...