I addressed it in my first paragraph but, to repeat, a smart contract is a self-provable receipt.
In addition, I don't see how you read my statement and came away with the idea that I support vigilante justice or anarcho-capitalism. My questions were pointed towards addressing the unstated assumptions inherent to your question and the other questions in your post that I didn't quote. Namely, that a centralized authority or agreement of centralized authorities is a requirement to render any transaction/contract/agreement valid. That's an assumption I find to be unproven and easily contested.
In addition, I don't see how you read my statement and came away with the idea that I support vigilante justice or anarcho-capitalism. My questions were pointed towards addressing the unstated assumptions inherent to your question and the other questions in your post that I didn't quote. Namely, that a centralized authority or agreement of centralized authorities is a requirement to render any transaction/contract/agreement valid. That's an assumption I find to be unproven and easily contested.