0.01BTC Monster puzzle - SOLVED

[MrFreeDragon]

After creating visual private key generator https://btckeygen.com I received some donations, and decided to transfer 0.01BTC from them to new created puzzle address.

The purpose is to teach more people what is the private key, and of course to have some fun.
The 0.01BTC prize transaction: https://www.blockchain.com/btc/tx/509e6b40be125e0ab1e4f4a1b4a591a37eb2b352a082ff84d5cebd1928395f52

The puzzle address: 1JAsB7Nx5zyYW3MZWKJq5UmhFHJ6RWagQY

Here is the border pattern used in private key generation:


You should "draw" a monster within the orange space.

Some hints:
1) Green cell is "1" bit, white cell is "0" bit. Orange is unknown space, you should fill it by green or white.
2) I did not invent the monster image by myself, however also not sure if the exact copy exist somewhere.
3) Do not change the green border of the provided pattern - it is part of the private key.
4) The monster is located within orange square (so, only 12*12=144 unknown bits to find)
5) The monster does not touch green borders

To solve this puzzle you do not need any special programming skills or technical knowledge. The only thing you need is to import the found private key to your wallet and make the transfer to your own wallet.
So, can you please share this topic in various social media (twitter, facebook, etc).

EDIT: Added the "SOLVED" word to the Subject as the puzzle was solved today by akkort

[1714611493]

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[1714611493]

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[1714611493]

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[1714611493]

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[1714611493]

1714611493

[MrFreeDragon]

The signed message to prove the address ownership:

-----BEGIN BITCOIN SIGNED MESSAGE-----
This is 0.01BTC Monster puzzle. Use https://btckeygen.com to draw monster and find the private key to this address.
-----BEGIN SIGNATURE-----
1JAsB7Nx5zyYW3MZWKJq5UmhFHJ6RWagQY
IKPDsNVPrA+L5qQBjVUaPwfkr2ukhaeUlbgppbYDua/yCX8Tvb8kp6BzMepxp9ql6jpME/z/xLhh+A9cMXS7nlc=
-----END BITCOIN SIGNED MESSAGE-----

[rudiyanzxc]

there are a lot of monsters out there, can you give me another clue about what the monster is? I'll be really grateful 

[NeuroticFish]

I did some attempts, none of them was good. It was fun though.
This is one of my results 




PS. You could give clues if the monster is symmetrical or not and also if it has more green or more white.

[Babylen]

Thanks for the puzzle, this is pretty fun. I feel like a hint as to the facial expression of the monster (if applicable that is) would also be nice. As it is guessing the monster, drawing it correctly, and guessing the facial expression is such a big search space.

Although I guess you're probably curious how long it will take people to guess it with the minimum info provided, I can appreciate that.

[LoyceV]

This is fun indeed, here's my first try:


I'm afraid there are far too many possibilities to test though, and drawing monsters isn't something I can brute-force at more than one per minute

[sgaragagghu]

Just to make it easier this is the initial border

ffffc3c38001800180018001c003c003c003c0038001800180018001c3c3ffff

Wanted to try to bruteforce but 2^144 still seems pretty high, isn't it?

[dkbit98]

Interesting idea for puzzle
Here is my first try just for fun.
I think it is a bit more scary than LoyceV monster  



I wonder how many potential combinations there are to solve it?

[LoyceV]

I wonder how many potential combinations there are to solve it?

Assuming symmetry, and assuming not touching the green boarders by a "diagonal" pixel: 288230376151711744 combinations.

[verita1]

Thanks for the idea. Today I had a special Sunday with this Monster puzzle
 

[MrFreeDragon]

Thank you for your interest!

Although the puzzle prize is 0.01BTC I want to attract more newbies to try it. First of all they could understand that the private key is just a number, and can examine the bitcoin address generation process.
Playing with the tool also could be funny for some people.

I also believe that some "clever bruter" could be written, however considering the amount of prize it is pointless for the majority of programmers.

I decreased the search space from 256bit down to 144bit (orange space). The uknown space even less as the monster does not touch (horizontally, vertically or diagonally) the green border.

Not so long ago I discussed with two independent bitcoin miners that the private key is just a number. They argued that it was wrong, and that bitcoin wallets were secured with 2-factor authentication connected to their cell phones, so knowing the private key number was no enough 
If you have somebody in your environment you want better understand the bitcoin private key - share this puzzle challenge with them. Let them try, learn and play.

As for the clue - I will give one more the next Sunday.

[AB de Royse777]

Interesting game. I have activated my notification for it. I remember your other thread where we had discussions about your project and happy seeing it to come this far.
 

As for the clue - I will give one more the next Sunday.

Will be looking forward to it.

[Asuspawer09]

Nice puzzle but I guess it's going to be difficult for a lot of users to win the prize  but its fun.



I'm not sure if its a monster because its looks like a monkey  .

As for the clue - I will give one more the next Sunday.

Yeah, more clue please  let's make it more fun.

[BrewMaster]

I also believe that some "clever bruter" could be written, however considering the amount of prize it is pointless for the majority of programmers.

nah, 144 bits is still too huge to write any kind of brute force for it. even if it is reduced to a small size with your fifth hint or some other "clever" moves like having multiple points side by side for different parts of the "face".

[Cnut237]

I had a couple of goes at trying to create a very pixelated Donald Trump, but gave up and did this one instead:

[mrxtraf]

After creating visual private key generator https://btckeygen.com I received some donations, and decided to transfer 0.01BTC from them to new created puzzle address.

The purpose is to teach more people what is the private key, and of course to have some fun.
The 0.01BTC prize transaction: https://www.blockchain.com/btc/tx/509e6b40be125e0ab1e4f4a1b4a591a37eb2b352a082ff84d5cebd1928395f52

The puzzle address: 1JAsB7Nx5zyYW3MZWKJq5UmhFHJ6RWagQY

Here is the border pattern used in private key generation:


You should "draw" a monster within the orange space.

Some hints:
1) Green cell is "1" bit, white cell is "0" bit. Orange is unknown space, you should fill it by green or white.
2) I did not invent the monster image by myself, however also not sure if the exact copy exist somewhere.
3) Do not change the green border of the provided pattern - it is part of the private key.
4) The monster is located within orange square (so, only 12*12=144 unknown bits to find)
5) The monster does not touch green borders

To solve this puzzle you do not need any special programming skills or technical knowledge. The only thing you need is to import the found private key to your wallet and make the transfer to your own wallet.
So, can you please share this topic in various social media (twitter, facebook, etc).

In connection with the fifth paragraph, two questions arose.
1. Is the monster green or white?
2. If the monster is white, then can points 7,8,9,10 (3, 14) be set to white.
3. If the monster is green, the question is analogous to paragraph two.
4. Do points 3-3, 3-7, 3-11, 3-14, 6-3 fall under rule number 5?

[MrFreeDragon]

-snip-
In connection with the fifth paragraph, two questions arose.
1. Is the monster green or white?
2. If the monster is white, then can points 7,8,9,10 (3, 14) be set to white.
3. If the monster is green, the question is analogous to paragraph two.
4. Do points 3-3, 3-7, 3-11, 3-14, 6-3 fall under rule number 5?

The border exist and it is green... Monster also exists within the orange unknown space - so the monster's part is green as well.
Blank cells (white) are 0 bits, or "emptiness"

I though that the 5th clue was easy to understand, however here is the adjusted orange space (the same unknown space adjusted by the clue that "the monster does not touch green borders":

[mrxtraf]

I had a couple of goes at trying to create a very pixelated Donald Trump, but gave up and did this one instead:

2MrFreeDragon
This is white monster or green or broken?

- so the monster's part is green as well.

or monster parts?
monster's part - one part (full face)
monster parts - more parts (eyes, mouth and etc)

I though that the 5th clue was easy to understand, however here is the adjusted orange space (the same unknown space adjusted by the clue that "the monster does not touch green borders":

4) The monster is located within orange square (so, only 12*12=144 unknown bits to find)

But this is not 12 to 12. And less.  

[MrFreeDragon]

Interesting game. I have activated my notification for it. I remember your other thread where we had discussions about your project and happy seeing it to come this far.
-snip-

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.
Actually this puzzle represents a practical security challenge with much easier conditions - instead of 256 unknown bits only 116 bits should be found.

I also believe that some "clever bruter" could be written, however considering the amount of prize it is pointless for the majority of programmers.

nah, 144 bits is still too huge to write any kind of brute force for it. even if it is reduced to a small size with your fifth hint or some other "clever" moves like having multiple points side by side for different parts of the "face".

To be honest I also have no ideas how to write such a "bruter". It is not brain wallet there we calculate key from the phrase (and can use vocabularies as the source). It is like "visual brain wallet" which is easy to observe for a human but difficult to code for a machine. Machine should be intellectual to undertand visual patterns - it is not easy, but possible. I intentionally did not select "2-axis" symmetric figure (like sun, star or snow crystal) because the figure could be brute forced just for 2^(116/4)=2^29 combinations in that case.

[MrFreeDragon]

-snip-

2MrFreeDragon
This is white monster or green or broken?
-snip-

These are 5 green separate pieces.

4) The monster is located within orange square (so, only 12*12=144 unknown bits to find)

But this is not 12 to 12. And less.  

Yes, not 144 if you took into consideration the 5th clue:

-snip-
I decreased the search space from 256bit down to 144bit (orange space). The unknown space even less as the monster does not touch (horizontally, vertically or diagonally) the green border.
-snip-