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Cardano claims that it overcomes problems found in other cryptocurrencies, mainly that Bitcoin is too slow and inflexible and that Ethereum is not safe or scalable. [22] Like Bitcoin, Cardano uses a UTXO ledger model, though it is an extended version (EUTXO) [23] [24] to facilitate smart contracts and scripting languages. [25]
Ouroboros BFT was an interim version used in 2020 to enable the switch between the Classic and Praos versions of Cardano using a hard fork combinator [7] that preserved the blockchain history; [8] [non-primary source needed] [9] Ouroboros Praos (2017) [10] provided security against fully-adaptive corruption in the semi-synchronous model. At ...
In BASIC programs, chain loading is the purview of the CHAIN statement (or, in Commodore BASIC, the LOAD statement), which causes the current program to be terminated and the chained-to program to be loaded and invoked (with, on those dialects of BASIC that support it, an optional parameter specifying the line number from which execution is to ...
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For a blockchain transaction to be recognized, it must be appended to the blockchain. In the proof of stake blockchain, the appending entities are named minters or validators (in the proof of work blockchains this task is carried out by the miners); [2] in most protocols, the validators receive a reward for doing so. [3]
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Uses a directed acyclic graph instead of a chain per se: Zcash: Oct 28, 2016 [4] ZEC PoW: Yes uses zero-knowledge proofs for privacy Monero: Apr 18, 2014 XMR PoW: No Yes [1] [4] Bitcoin Gold: BTG PoW: Yes (scripts) No [1] Dogecoin: DOGE PoW: No No [1] Hyperledger Fabric ? Linux Foundation: N/A BFT, PoA: Yes Yes Yes Immediate Account-balance R3 ...