Segregated Witness, or SegWit,
Segregated Witness, BIP141, was intended to increase bitcoinBitcoin is a digital currency (also called crypto-currency) ... More blockchainA blockchain—the technology underlying bitcoin and other c... More 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 blockBlocks hold batches of valid transactions that are hashed an... More.
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.