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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 ...
[6] Developing a roadmap has three major uses. [ 3 ] It helps reach a consensus about a set of needs and the technologies required to satisfy those needs, it provides a mechanism to help forecast technology developments, and it provides a framework to help plan and coordinate technology developments. [ 7 ]
[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." [ 6 ] Kivimäki "was the technical lead of X-Road implementation project in Finland and was coordinating the joint open source development of the X ...
The XRP Ledger peer-to-peer overlay network is characterized by a small-world network topology, featuring a tightly clustered structure and short paths between nodes. [12] Information systems expert Mary Lacity notes that this platform "uses much less electricity than Bitcoin—about as much electricity as it costs to run an email server".
The actual fork was preceded by Mike Hearn publishing a Bitcoin Improvement Proposal (BIP 64) on June 10, 2014, calling for the addition of "a small P2P protocol extension that performs UTXO lookups given a set of outpoints." [src 1] On December 27, 2014 Hearn released version 0.10 of the forked client XT, with the BIP 64 changes.
MetroHash [6] 64 or 128 bits numeric hash (nhash) [7] variable division/modulo xxHash [8] 32, 64 or 128 bits product/rotation t1ha (Fast Positive Hash) [9] 64 or 128 bits product/rotation/XOR/add 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 ...
IOTA is an open-source distributed ledger and cryptocurrency designed for the Internet of things (IoT). [1] It uses a directed acyclic graph to store transactions on its ledger, motivated by a potentially higher scalability over blockchain based distributed ledgers. [2]
Tezos was first proposed in 2014 and created by husband-and-wife team Arthur and Kathleen Breitman. [4] While working at Morgan Stanley in 2014, Arthur Breitman released two papers that proposed a new type of blockchain under the pseudonym "L. M. Goodman," referencing a journalist at Newsweek who had misidentified the creator of Bitcoin. [5]