0.01BTC Monster puzzle - SOLVED

[LoyceV]

so the monster's part is green as well.

That's good to know, until now most of the monsters posted here are white.
For a green one, I tried Pacman:

Edited from an image I found on Google. So partial credits go to this link, which I can't verify because I block that site via my hosts file.

[Tamarindei]

so the monster's part is green as well.

That's good to know, until now most of the monsters posted here are white.
For a green one, I tried Pacman:
http://loyce.club/other/pacman.gif
Edited from an image I found on Google. So partial credits go to this link, which I can't verify because I block that site via my hosts file.

This is a ghost but should be a winner .

Check your corners. They are not correct base.

[Cnut237]

This is white monster or green or broken?

All monsters are, in a sense, broken. The label can be profoundly damaging from a psychological perspective. I was attempting to capture that in my art.


Either that or I didn't read the instructions properly.

[LoyceV]

Check your corners. They are not correct base.

Thanks, you're right. I was lazy and used this:

Just to make it easier this is the initial border

ffff83c18001800180018001c003c003c003c003800180018001800183c1ffff

The correct code is:

Code:

ffffc3c38001800180018001c003c003c003c0038001800180018001c3c3ffff

I tested it, and it's still wrong I won't update my screenshot for this.

[Tamarindei]

I tested it, and it's still wrong I won't update my screenshot for this.

Yes i think we must wait for additional hints.

@MrFreeDragon: Please add a selection and move selection tool .

[Aveatrex]

Being inspired by Monster, Inc movies here's my attempt: 



Happy puzzling everyone

[sgaragagghu]

Check your corners. They are not correct base.

Thanks, you're right. I was lazy and used this:

Just to make it easier this is the initial border

ffff83c18001800180018001c003c003c003c003800180018001800183c1ffff

The correct code is:

Code:

ffffc3c38001800180018001c003c003c003c0038001800180018001c3c3ffff

I tested it, and it's still wrong I won't update my screenshot for this.

Fixed, sorry 

[MrFreeDragon]

so the monster's part is green as well.

That's good to know, until now most of the monsters posted here are white.
For a green one, I tried Pacman:

Edited from an image I found on Google. So partial credits go to this link, which I can't verify because I block that site via my hosts file.

Besides the corners this picture fits all the clues provided in the initial post and comments about green/white monster part.

[Tamarindei]

Besides the corners this picture fits all the clues provided in the initial post and comments about green/white monster part.

Oh it sounds like LoyceV was close.

[AB de Royse777]

Yes, I also remember. We discussed the security of such visual patterns. In theory it was easy to say that "knowing the pattern type" it would be easy to retrieve the private key.

You have a point here, and I am glad that it's working. This will be interesting to see how many users are trying this and how long it takes to solve this. I surrender after my first try which was no difference than some users tried above LOL

Good luck to all.

[sukbir]

Hi guys, I am unable to post thumbnail due to Newbie. Here's my first attempt in the below link!

https://ibb.co/4SjTCh4

[UWotb_ruh]

As a beginner I love this! I do hope more hints come out though.

Either way, this is really good fun

[MrFreeDragon]

Hi guys, I am unable to post thumbnail due to Newbie. Here's my first attempt in the below link!
https://ibb.co/4SjTCh4

Thank you. Good try.
Keep in mind that you can easily check every generated image for transactions in blockchain - there is a special option for this. If you find the "puzzle monster" you immediately will see the green box with 0.01BTC amount.
For testing purposes you can use private key 1 (all cells white except one cell 16x16 which is green).
All these options are safe, nothing is stored on the server - all calculations are made in your browser (java script is used) - the code is open and also available on github. So you can always download it to your machine and use offline.

sukbir, please also do not send me private messages about this puzzle. I will not answer them. It is better to keep all the puzzle discussions here.

[rudiyanzxc]

I am waiting for the next clue.
there is too many possibilities, I already tried a lot of patterns hahaha
but it's really fun playing this game. also I learn a lot from playing this game.
thank you so much for sharing this!

[akkort]

ffffc3c38001824187e18ff1cdb3dffbdc3bd66b93c9b81da8158001c3c3ffff

[mrxtraf]

ffffc3c38001824187e18ff1cdb3dffbdc3bd66b93c9b81da8158001c3c3ffff

Coll

ccылкa

Congratulation!!!!

[math09183]

Punisher?

[mrxtraf]

Punisher?

akkort is winner.

[AB de Royse777]

Good to see someone found the monster (I guess).
I do not see any monster posted by akkort

Congratulation!!!!

Is this the monster?

If this is the final outcome then I have to say LoyceV was the one who first thought about the pacman monster and this was close.

Congratulations to the winner!

[MrFreeDragon]

ffffc3c38001824187e18ff1cdb3dffbdc3bd66b93c9b81da8158001c3c3ffff

Nice job! Congratulations!

The monster was created based on this picture: https://www.vectorstock.com/royalty-free-vector/retro-pixel-space-monsters-vector-18930301
I just changed the legs (make longer) and add one column to make it symmetric and fit the orange space (as the most monsters had odd columns). So slight changes to the image were done.

I can say that there were some weaknesses (i.e. attack vectors) in this puzzle:
1) The picture was symmetric
2) The public key was revealed (through the posted signature)
3) Border decreased the total bits to find from 256 down to 116

Do the weakness #2 (revealed public key) no need to brute all 116 bits (2^116), and only square root of total length is enough --> 58 bits (2^58). However it is still very much to brute force. Assuming that the monster could be symmetric (116/2 = 58bits unknown bits only), it is enough to make only square root from 2^58 operations --> 2^29. This is possible to find very fast.

akkort, can you please share your method to solve this puzzle. Did you use baby-step-giant-step or Pollard method? Or did you just draw the picture and was lucky with it?
If you use BSGS method or Pollard, did you adjust the public key to fit exact 58 bits length (i.e. subtract the border public point from the puzzle public point) or make a special code for the exact border pattern?

PS. I remember I mentioned no programming skills are required to solve this puzzle. Actually it is truth - to draw a picture we do not need a program. Signing a message I revealed the public key of the address and "opened the door" for possible baby-step-giant-step/pollard attacks.