On Wed, Apr 26, 2017 at 4:01 PM, Luke Dashjr via bitcoin-dev < bitcoin-dev@lists.linuxfoundation.org> wrote:
> There are things scriptSig can do that witness cannot today - specifically > add > additional conditions under the signature. We can always obsolete scriptSig > later, after segwit has provided an alternative way to do this. > I'm not sure what you are referring to here. The data in the scriptSigs are never signed. The scriptSigs are always stripped from the transaction before the sigHash is made.
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