And yet all transactions in a block share the same timestamp, which by definition means they did happen simultaneously.
You cannot just say it's simultaneous and say "by definition". It's not. Nothing in the universe is simultaneous with other reference frames.
This is a mathematical and logical fallacy. See General Relativity and the Lorentz transform for a mathematical proof of this FACT.
If your definition violates the nature of reality and violates mathematical proof...then you can justify anything. Because once you introduce a contradiction or logic error, then you can construct any proof to "proof" anything.
Bitcoin exists within itself.
No. It doesn't. This is patently false and ignorant of 100 years of physics experiments and mathematics.
Bitcoin (or any system) exists in the minds of the agents interacting with the system -- necessarily so. There is no such thing as "self contained system with no external influence". Absurdity and complete non-sense. See the basic literature on modern physics for a thorough treatment of the subject.
Transaction A coming before transaction B in the real world is immaterial.
It is NOT immaterial that your reply to my comment came after I made my post. If it's immaterial, then why didn't you post your reply to my comment before my comment appeared?
It's NOT immaterial to the IRS and other audit agencies of what order of transactions were performed in.
You're now joking with me right?
The only thing that matters is their representation within the blockchain.
Yet for some reason you felt it necessary to a) represent it with neurons in your brain and b) represent it in conversation on this forum.
If that's the only thing that matters is the representation in the blockchain -- then why are you showing us that you obviously think it also matters to NOT just represent it in the blockchain?
You have now recorded the representation in at least 3 systems: a) This forum, b) your brain system, c) my brain system.
You can't make a statement and then do the exact opposite with your actions. Your message is contradictory and therefore cannot be used to form a coherent understanding.
If they are in the same block they happened at once,
You are just restating that "transactions in blocks happened simultaneously". It is obvious they did not and cannot. There is the Planck limit in the base case to contend with. And even if they did, it's still non-sensical from a REALITY and PHYSICAL understanding. See GR.
It's that simple. You can't look at the real world for meaning, you can only look at the block chain.
Your actions are contradicting your message. Here you are saying you can only look at the blockchain for meaning, yet here you are looking "into the real world" (ie: this forum and interacting with us) to talk about it.
And BTW the "real world" is all of it. You do not get to decide and group things into nice piles "real" versus "not real". Care to share with us an example of a "not real" thing?
But let me answer this directly as well (assuming your contradiction wasn't fatal to the argument...which it is).
It's that simple. You can't look at the real world for meaning, you can only look at the block chain.
- The blockchain itself is the time ordered sequence of spacetime events. The 'timestamp' is just a convenience parameter. Someone could have written "cute bunnies1234" into that timestamp field and the entire blockchain and time keeping system would continue to function perfectly by merely using the chronological ordering as the 'clock'