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Segregated Witness (SegWit) is well-along the way to being implemented and deployed as a soft-fork.

Facts:

  • SegWit eliminates most forms of transaction malleability.
  • Discounts input scripts in comparison to other block content.
  • Adds a new function/constraint to the Coinbase transaction by requiring it to contain the root of the SegWit data.
  • Provide a capacity increase upon adoption.
  • Makes future changes to Bitcoin Script easier.

Questions:

  • What other methods could achieve the above benefits?
  • Why was Segregated Witness chosen instead?
  • Is there an alternative that is less complex to introduce when regarding the complete picture, i.e. technical, economical, and social aspects?

Intent: The above is a criticism that is frequently stated in parts of the Bitcoin community, and I hope to provide an anchor for a visible collection of expertise on the matter.

  • Yes, I'm aware that this is fairly broad. Yes, this is subjective, but I hope that it falls into the good subjective category. – Murch Apr 24 '16 at 12:00

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