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policy: Add OP_1 <0x4e73> as a standard output type

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These outputs are called anchors, and allow
key-less anchor spends which are vsize-minimized
versus keyed anchors which require larger outputs
when creating and inputs when spending.
This commit is contained in:
Greg Sanders 2023-11-08 14:07:49 -05:00
parent 8754d055c6
commit 455fca86cf
17 changed files with 106 additions and 3 deletions
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17
src/script/script.cpp
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@ -204,6 +204,23 @@ unsigned int CScript::GetSigOpCount(const CScript& scriptSig) const
return subscript.GetSigOpCount(true);
}
bool CScript::IsPayToAnchor() const
{
return (this->size() == 4 &&
(*this)[0] == OP_1 &&
(*this)[1] == 0x02 &&
(*this)[2] == 0x4e &&
(*this)[3] == 0x73);
}
bool CScript::IsPayToAnchor(int version, const std::vector<unsigned char>& program)
{
return version == 1 &&
program.size() == 2 &&
program[0] == 0x4e &&
program[1] == 0x73;
}
bool CScript::IsPayToScriptHash() const
{
// Extra-fast test for pay-to-script-hash CScripts: