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Segregated Witness, or SegWit,

Segregated Witness, BIP141, was intended to increase bitcoin blockchain speed by to mitigating a blockchain size limitation. SegWit was to prevent nonintentional bitcoin transaction malleability, transmit optional data transmission, and bypass some protocol restrictions including block.

SegWit splits the transaction into two segments, removing the unlocking signature (“witness” data) from the original portion and appending it as a separate structure at the end.

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