Quote from: franky1 on April 03, 2016, 03:30:57 AM

Quote from: knightdk on April 03, 2016, 03:00:38 AM

Uh. No. OP_0 is currently treated as a counter, but basically as a NOP now. After segwit is released, it is treated as script versioning. The OP_0 isn't the part that matters, but rather the fact that the stack is not zero or empty and thus is true. That is what makes it anyonecanspend because if the scriptsig is empty then the stack will always evaluate to true.

i love how you try to remain disagreeing, but when you try to explain it you are actually explaining that the op_0 is like i said NOT anyone can spend. and so its not exactly like an anyone can spend transaction at all.. like i said. and that the use of the example of anyone can spend is only as an analogy comparison and not a technical duplicate..

Fine, semantics, whatever. When I refer to an anyonecanspend output, I will be referring to a output that can be spent without knowledge of the private key for the address.

Quote from: franky1 on April 03, 2016, 03:30:57 AM

so back to my point. if a malicious pool adds segwit transaction the OLD clients will look passed it. meaning that the pool could grab any input from anyone and make a transaction that has a destination of a privkey the pool owns..

NOOO! The anyonecanspend output does not affect the input. What part of that do you not understand? If I take any UTXO and put that as my input, I HAVE TO SPEND FROM IT AS THE OUTPUT DICTATES. THE INPUT SCRIPT COMBINED WITH THE OUTPUT SCRIPT HAVE TO RESULT IN A NON-ZERO NON-EMPTY STACK!! The outputs of the SPENDING transaction can be anyonecanspend but THAT DOESN"T AFFECT HOW THE INPUTS OF THE TRANSACTION ARE VALIDATED!