> On August 16, 2016 at 6:20 AM Luke Dashjr <luke@dashjr.org> wrote:
>
>
> On Tuesday, August 16, 2016 10:10:01 AM Johnson Lau via bitcoin-dev wrote:
> > Specification
> >
> > Every signature passed to OP_CHECKSIG, OP_CHECKSIGVERIFY, OP_CHECKMULTISIG,
> > or OP_CHECKMULTISIGVERIFY, to which ECDSA verification is applied,
>
> Not 20-byte witness v0 programs?

That's an implicit CHECKSIG. Will clarify.

>
> > These operators all perform ECDSA verifications on pubkey/signature pairs,
> > iterating from the top of the stack backwards. For each such verification,
> > if the signature does not pass the IsLowDERSignature check,
>
> "the IsLowDERSignature check" is not well-defined. Probably intend to
> reference the previous paragraph?

IsLowDERSignature is the function in Bitcoin Core. That's a bit complicated as the real checking function is not directly called. I'll clarify.

>
> Luke