Bitcoin Forum

Here is an idea.
A p2p app that would be hashing all the time anything that shows on your desktop screen.
It would be hashing everything multimedia that happens on your computer and broadcast it to all others.
A hash of all computers multimedia activity would then be inserted in the bitcoin blockchain.
This could even be a feature of Bitcoin-QT client that would be a great incentive for people to have it always running on the background.
There would be no way of verifying it all but we would have some kind of trust that these hashes introduced in the blockchain represented some kind of quantum state of Reality.

It won't scale at all, but what would be the point anyway?

Maybe one day it would be found interesting in terms of quantum computing.
For instance, if parallel universes exist, each blockchain in each parallel universe would be different.
You could then use a hash of the blockchain, add a fingerprint of yours, and pick the lottery numbers based on it.
You would have much more chances of winning the lottery since you would be playing with different numbers on an infinitude of parallel universes.
Just thinking... But above all because we could one day find it useful to have a quantum state representation of Reality embedded in the blockchain. If this proves to be of any use in a distant future the sooner we start doing then... the better, I guess.

Maybe CPU manufacturers could play their role here...

On a scale of 1-10 how high are you?

If that happened, the size of blockchain would be significant!

The size? What do you mean?

Sacrcasm.. Blockchain rules the universe

I think this guy is attempting to troll us ::) Hero member and doesn't know what is ment by "size" of the blockchain.

I just didn't understand what was meant as inserting a hash of everyones's computers activity periodically doesn't add much at all to the size of the blockchain. Almost zero change to the size.

I placed this idea into /dev/null for later review.

Are we taking privacy seriously over here? What if I happen to log in to my bank account and it's capturing every single details on the screen?

Its just hashes. While this was my first though, its not an issue as long as the hashing function used is not broken. It might be broken some time in the funture but even then the information of the hash is not enough to reverse it to a full picture. E.g. 1024*768*16 bit = 12MiB, while SHA512 would only give you 512 bits of information. There is no chance to reverse the process to a full picture, too much information is lost.

This is also the reason why this is no "quantum state" of anything, but just a very large collection of hashes that serve no purpose other than bloating up the blockchain. This might be used as rainbow table, but I doubt even thats possible.


I have no idea what your idea of "almost zero change to the size" and "periodically" is, but lets assume:
- once a day
- only a screenshot, no other data
- MD2 (128 bit)
- 10,000 paricipants

Thats 128*10,000 = 1250KiB daily of information. You are basically removing littel more than a full bitcoin block each day, for every 10k screenshots with a 128 bit hash.

Assuming that the hash of all hashes was different in parallel universes, you could use it to differentiate between them. That's what I mean by "quantum state".

You would hash all the hashes, so this wouldn't be bloating the blockchain.

If I ran a Matrix Screen saver how would that affect the state of the other parallel universes (or even our own)?

As I said, the hash of the blockchain would be different in each parallel universe, and you could use that hash to pick the lottery numbers. If the lottery numbers drawn were the same in every parallel universe you would be having more chances in winning in one of them because the numbers you would pick would be different in every world.
The catch is that the lottery numbers drawn would probably be also different in different worlds.
But we could have a lottery were the numbers are drawn in advance and kept secret so that they will be the same in all worlds as the extraction would be previous to the numbers pick.

The idea of having a RDG that will produce different results in different worlds seems interesting and may prove useful one day in terms of quantum computing.

OP,

I don't get it.

What would be accomplished with your proposal
of inserting these (for-all-intents-and-purposes) RANDOM
hashes into the blockchain?

Even the best random generators have deterministic limitations.
I reckon this would be a better source of randomness if you were trying to get a different result in as many parallel universes as possible.
My intuition tells me that this might also ultimately prove to be useful in terms of things like quantum computing.

Randomness for what?  Better than what?

Why do you need to put it in the block chain?

What's a "parrallel universe" (beyond a theoretical concept), or are you just trolling?

somewhere in the world Deepak Chopra jizzed in his pants

I'm serious. I think making the blockchain sensitive to any parallel universe bifurcations so that the blockchain is different in as many worlds as possible is interesting.

For instance in any game where the results are drawn in advance and kept hidden and secret for a long time, you would get much more chances of winning in one of the parallel worlds because in each parallel world you would be using a different *lucky numbers* picker - using the blockchain latest hash as a source for that pick - and so in each parallel world you would be playing with different numbers while the results were already drawn in advance and kept hidden and secret..