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MimbleWimble
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Mimblewimble is a blockchain protocol created to improve privacy, fungibility, and scalability of blockchains. It was published on July 19, 2016 under the pseudonym "Tom Elvis Jedusor" which is the French name of Voldemort from Harry Potter. The Mimblewimble protocol uses blinding factors of balancing inputs and outputs in a commitment scheme as private keys. Sender and receiver must interact to construct a joint signature to authorize a transfer of funds. Blocks in Mimblewimble have all their constituent transactions aggregated into one giant transaction, erasing the original transaction boundaries. The initial block download further benefits from cut-through, in which all spent outputs cancel against corresponding inputs, erasing most of the blockchain history. A provable security analysis for Mimblewimble is provided by Georg Fuchsbauer et al. The protocol powers several decentralized privacy-oriented cryptocurrencies. |
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