== Bitcoin challenge transaction: ~1000 BTC total bounty to solvers! ==UPDATED==

[Dexed]

I see puzzles 65, 70, 75, 80 ... 125 are solved. How come?

It's easier to solve a key if you know the public key, when someone spends from his address, public key associated with that address is revealed, this is what Satoshi did with puzzles every 5 key apart, methods such as kangaroo and BSGS can be used to speed up the search thousands of times faster than brute forcing for unexposed puzzles.

That's why you should never keep your coins on addresses with known public keys.😉 ( not that any time soon they can crack 256 bit keys, so every one is safe for a few decades )

But maybe someday you have to make an outgoing transaction. So after this transaction you need to transfer a rest of your bitcoins to another address without any outgoing transactions to be sure that your public key is not revealed?

[digaran]

I see puzzles 65, 70, 75, 80 ... 125 are solved. How come?

It's easier to solve a key if you know the public key, when someone spends from his address, public key associated with that address is revealed, this is what Satoshi did with puzzles every 5 key apart, methods such as kangaroo and BSGS can be used to speed up the search thousands of times faster than brute forcing for unexposed puzzles.

That's why you should never keep your coins on addresses with known public keys.😉 ( not that any time soon they can crack 256 bit keys, so every one is safe for a few decades )

But maybe someday you have to make an outgoing transaction. So after this transaction you need to transfer a rest of your bitcoins to another address without any outgoing transactions to be sure that your public key is not revealed?

That's the best security precaution, think of public keys as actual keys of safe vaults, and think of hackers/ attackers as keysmith, given enough time and resources they can make a duplicate and open the vault, but if they never see the key, they can't duplicate it.

[Dexed]

I see puzzles 65, 70, 75, 80 ... 125 are solved. How come?

It's easier to solve a key if you know the public key, when someone spends from his address, public key associated with that address is revealed, this is what Satoshi did with puzzles every 5 key apart, methods such as kangaroo and BSGS can be used to speed up the search thousands of times faster than brute forcing for unexposed puzzles.

That's why you should never keep your coins on addresses with known public keys.😉 ( not that any time soon they can crack 256 bit keys, so every one is safe for a few decades )

But maybe someday you have to make an outgoing transaction. So after this transaction you need to transfer a rest of your bitcoins to another address without any outgoing transactions to be sure that your public key is not revealed?

That's the best security precaution, think of public keys as actual keys of safe vaults, and think of hackers/ attackers as keysmith, given enough time and resources they can make a duplicate and open the vault, but if they never see the key, they can't duplicate it.

But how whales work with it? Let's choose this address, for example https://www.blockchain.com/explorer/addresses/btc/bc1qgdjqv0av3q56jvd82tkdjpy7gdp9ut8tlqmgrpmv24sq90ecnvqqjwvw97
It has a lot of bitcoins, and has no outgoing transactions, so no one knows the public key. But how the owner can withdraw some of these bitcoins without revealing his public key? This is Bitfinex verified address, and they need to operate with this money, but this money just frozen on this address, because they cannot make outgoing transaction without revealing public key.

[digaran]

But how whales work with it? Let's choose this address, for example https://www.blockchain.com/explorer/addresses/btc/bc1qgdjqv0av3q56jvd82tkdjpy7gdp9ut8tlqmgrpmv24sq90ecnvqqjwvw97
It has a lot of bitcoins, and has no outgoing transactions, so no one knows the public key. But how the owner can withdraw some of these bitcoins without revealing his public key? This is Bitfinex verified address, and they need to operate with this money, but this money just frozen on this address, because they cannot make outgoing transaction without revealing public key.

The first million bitcoins mined by Satoshi have their public keys revealed, million other coins are sitting in addresses with exposed public keys, but nobody is going to find them any time soon, this puzzle is the proof of that, when we can't even find a key with 32 first characters as 0s easily, how can one finds a key with 64 unknown hex characters?

It's best not to use an address with exposed public key for long term cold storage. That's it,  like when they say lock the doors before going to bed, not neccesarily a bad thing to do, after all there is no central bank to hold and keep bitcoins safe, you alone are responsible to keep them safe, now saying to not reuse addresses is a security advice, ignore it, nothing will happen, there is only a tiny percentage of probability of compromise.

Remember, before Satoshi launches bitcoin, he had asked several mathematicians and cryptography experts to test the security of public keys, they all gave thumbs up for launch.

[MrlostinBTC]

It has been partly fun but most exhausting running a server in my garage in hope to find one of the puzzles to save me from debt, poverty and help out with illness in my family with unpayable medical bills. Sunday wife and kids are out of town and I will turn off the server and myself. Good luck rest of you!

I see you have chosen the path of cowards, there are so many things in life other than this puzzle.
Find something else, believe in God, because he always provides.

Also there is no such a thing as an off switch for us, we never go off, whatever happens we keep existing.

A wife and kids, you are already blessed, you just don't know it.

Wow, Great words here! Yes be thankful for what you have. Not what you want.

Amazing reply digaran!

[Abgedreht88]

Hello, I'm new here and have a question about

bojlahg/VanitySearchPublicKey.

if I search there I find only keys with use cpu
-gpu is displayed but does not find any keys
for example:

VanitySearchPK.exe -t 0 -gpu -sk 2000000000000000000000000000000000 -p 633cbe Find no keys but 5000mk/s            (0keys) 1 minute

VanitySearchPK.exe -t 1 -gpu -sk 2000000000000000000000000000000000 -p 633cbe find keys with 5600mk/s very bad (25keys) 1 minute

VanitySearchPK.exe -t 32 -sk 200000000000000000000000000000000 -p 633cbe find keys good but 1000mk/s                (200keys)1 minute

I believe that the program recognizes the GPU
but the gpu performance does nothing

can any help for this

I can't fix this  but I would be happy if someone who can do it would contact me.

[kalos15btc]

Hello, I'm new here and have a question about

bojlahg/VanitySearchPublicKey.

if I search there I find only keys with use cpu
-gpu is displayed but does not find any keys
for example:

VanitySearchPK.exe -t 0 -gpu -sk 2000000000000000000000000000000000 -p 633cbe Find no keys but 5000mk/s            (0keys) 1 minute

VanitySearchPK.exe -t 1 -gpu -sk 2000000000000000000000000000000000 -p 633cbe find keys with 5600mk/s very bad (25keys) 1 minute

VanitySearchPK.exe -t 32 -sk 200000000000000000000000000000000 -p 633cbe find keys good but 1000mk/s                (200keys)1 minute

I believe that the program recognizes the GPU
but the gpu performance does nothing

can any help for this

I can't fix this  but I would be happy if someone who can do it would contact me.

it does actually, 8 core cpu searching 10 million key per seconde, you are searching with 5000 million key per seconde thats your gpu performence, so dont worry gpu search is working

[Abgedreht88]

no the gpu find nothing only if i search with cpu can i find keys

-t 30  1000mk/s finds key after 10 sek
-gpu 10000mk/s find nothing after 1 hours

i thing the gpu engine is wrong or so
im search on rtx 4060

if i use bitcrack for searching i can search only on gpu and find keys
-gpu -t 0

[kalos15btc]

no the gpu find nothing only if i search with cpu can i find keys

-t 30  1000mk/s finds key after 10 sek
-gpu 10000mk/s find nothing after 1 hours

i thing the gpu engine is wrong or so
im search on rtx 4060

if i use bitcrack for searching i can search only on gpu and find keys
-gpu -t 0

you are using the wrong software if you are looking for the puzzle, thats a vanity search and there is no range search, , try vanbitcracken and put your range to search
https://github.com/WanderingPhilosopher/VanBitCrackenRandom2

[Viko19]

no the gpu find nothing only if i search with cpu can i find keys

-t 30  1000mk/s finds key after 10 sek
-gpu 10000mk/s find nothing after 1 hours

i thing the gpu engine is wrong or so
im search on rtx 4060

if i use bitcrack for searching i can search only on gpu and find keys
-gpu -t 0

you are using the wrong software if you are looking for the puzzle, thats a vanity search and there is no range search, , try vanbitcracken and put your range to search
https://github.com/WanderingPhilosopher/VanBitCrackenRandom2

Hi, need to find private key for bitcoin wallet. Part of this key is 35 characters, I know how to find other characters, is there a program for sorting characters with an indication of mandatory ones.
I would appreciate a tip on the bitcoin part

[digaran]

You can look here for what you seek : https://bitcointalk.org/index.php?topic=5214021.0
And here :
https://bitcointalk.org/index.php?topic=5382190.0

[Abgedreht88]

You can look here for what you seek : https://bitcointalk.org/index.php?topic=5214021.0
And here :
https://bitcointalk.org/index.php?topic=5382190.0

Thanks for the feedback
but no one was able to answer it
I'm looking for puplicKey not privKey
yes it is vanitySearch
but not the normal one
https://github.com/bojlahg/VanitySearchPublicKey

this allows you pupkeySearch
in a specific range

[DrShams]

i wonder about privatekeys website

when i check for any addresss , i get the same addresses from different networks bitcoin gold , bitcoin cash ,,,etc
that has the same private key ?

and i wonder how is that possible without knowing the private key from the beginning ??

lets say for puzzle 66
13zb1hQbWVsc2S7ZTZnP2G4undNNpdh5so

Addresses with the same Private Key :

Bitcoin:
bc1qyr2956nky56hqr8fuzepdccejse4mw994lyftn
 0  0  0
Bitcoin Testnet:
miWYJkVaKXJroYbBB8kkrBHEecy5dxNKJP
 0.15650667  0.15650667  15
tb1qyr2956nky56hqr8fuzepdccejse4mw99lel6sq
 0.07957129  0.07957129  15
Bitcoin Cash:
qqsdgkn2wcjn2uqva8sty9hrrx2rxhdc55qw0jqhdh
 0.69
Bitcoin SV:
13zb1hQbWVsc2S7ZTZnP2G4undNNpdh5so
Bitcoin Gold:
GLqWRpjYVMUu6uQrPWSVT2QohoADou8QwG
 0.66  0.66  2
btg1qyr2956nky56hqr8fuzepdccejse4mw99rkzv7m
Litecoin:
LNDYGuiRbA7fHEoidhmgJH8fzqjeseATsU
 0  0  0
ltc1qyr2956nky56hqr8fuzepdccejse4mw993r7dnr
 0  0  0
Dogecoin:
D88gYxMEoumtZSJAC9mwa2EWfm6g3uocon
 25.60472599  25.60472599  9
Dash:
XdgRqx4VUD6CBNi9KT6bsnkhcxx4pyNnFr
 0  0  0
Zcash:
t1LsC22pjUpfCd5ATPzbWA5Aq3HZTZXJWuS
Clams:
xBJDuaF4nDMe4pDRp3R3TSMh1jfcBnESxx
 0  0  0

[albert0bsd]

and i wonder how is that possible without knowing the private key from the beginning ??

All those address can be derived from the RMD hash of the address, example:

Address 13zb1hQbWVsc2S7ZTZnP2G4undNNpdh5so decoded in to Hexadecimal is:

0020d45a6a762535700ce9e0b216e31994335db8a5ee6612b2

But first byte for btc address is alway 00 and last 4 bytes are te checksum: ee6612b2

So the Real hash160 of the address 20d45a6a762535700ce9e0b216e31994335db8a5

Example with Dogecoin is almost the same, address D88gYxMEoumtZSJAC9mwa2EWfm6g3uocon

Decodes is 1e20d45a6a762535700ce9e0b216e31994335db8a50d861875

1e is the prefix for Doge, the checksum are the last 4 bytes: 0d861875

So the Real hash160 of the address 20d45a6a762535700ce9e0b216e31994335db8a5

So for almost all altcoin you only need the original rmd160 hash check the next image:



I recommend you to read Chapter 4. Keys, Addresses, Wallets

[digaran]

i wonder about privatekeys website

when i check for any addresss , i get the same addresses from different networks bitcoin gold , bitcoin cash ,,,etc
that has the same private key ?

and i wonder how is that possible without knowing the private key from the beginning ??

Never use such websites to search for your address/private keys, they will log and then will take any coin deposited to your address in the future.
Whoever holds the private key for puzzle 66, can spend all those garbage coins as well. You can even fork bitcoin and send millions of useless and worthless coins to that address.

Anyways, as long as a crypto coin is using secp256k1 curve to generate their private keys, all keys can spend from other coins which are using the same curve.

Ps, welcome Dr.😉

[DrShams]

and i wonder how is that possible without knowing the private key from the beginning ??

All those address can be derived from the RMD hash of the address, example:

Address 13zb1hQbWVsc2S7ZTZnP2G4undNNpdh5so decoded in to Hexadecimal is:

0020d45a6a762535700ce9e0b216e31994335db8a5ee6612b2

But first byte for btc address is alway 00 and last 4 bytes are te checksum: ee6612b2

So the Real hash160 of the address 20d45a6a762535700ce9e0b216e31994335db8a5

Example with Dogecoin is almost the same, address D88gYxMEoumtZSJAC9mwa2EWfm6g3uocon

Decodes is 1e20d45a6a762535700ce9e0b216e31994335db8a50d861875

1e is the prefix for Doge, the checksum are the last 4 bytes: 0d861875

So the Real hash160 of the address 20d45a6a762535700ce9e0b216e31994335db8a5

So for almost all altcoin you only need the original rmd160 hash check the next image:

https://www.talkimg.com/images/2023/09/17/6kpfl.png

I recommend you to read Chapter 4. Keys, Addresses, Wallets

Dear albert0bsd You are always the King Of Crypto Knowledge 

[s.john]

I think the puzzle creator should reveal the public keys for all the keys bigger than 120bit except 124, 134, 144, 154, this will make the challenge reflect the true strength of bitcoin security.

[GR Sasa]

I think the puzzle creator should reveal the public keys for all the keys bigger than 120bit except 124, 134, 144, 154, this will make the challenge reflect the true strength of bitcoin security.

No i dont support that.

I don't support that, because if satoshi reveals public key for the lowered bits, the same guy who solved #120 #125, will also solve them and take the money for himself and leave us nothing but a air to eat.

And why except 124, 134, 144, 154?

[digaran]

Oh look, I'm back here again with useless stuff,

Code:

from sympy import mod_inverse

N = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141

def ters(scalar, target):
    k = mod_inverse(2, N)
    scalar_bin = bin(scalar)[2:]
    for i in range(len(scalar_bin)):
        if scalar_bin[i] == '0':
            result = (target * k) % N
        else:
            result = ((target * k) % N + N - 57896044618658097711785492504343953926418782139537452191302581570759080747169 ) % N
        target = result
    return result

target1 = 1361129467683753853853498429727072845824
target2 = 961437616415839130310402076835011931977

print("Target results:")
for x in range(1, 256):
    result1 = ters(x, target1)
    print(f"T1: {result1:x}")
for x in range(1, 256):
    result2 = ters(x, target2)
    print(f"T2: {result2:x}")
for x in range(1, 256):
    result1 = ters(x, target1)
    result2 = ters(x, target2)
    subtraction = (result1  - result2) % N
    print(f"S: {subtraction:x}")

Lets imagine target 2 T2, is puzzle 130, target 1 T1 is obviously a known k, after running the script look at T2 results, then change N+N - "this value needs to be tweaked", and then look at the results, T2 and S results, change the range from 1, 256 to whatever you want, add 1 to target 1 then run, try subtracting what ever you have been subtracting from the real 130 so far, from T2 and put both of them on target 1 and 2, try having the greater key on t1 and smaller on t2 and vice versa, try and test everything you can think of, you can also try several test keys as if they are puzzle 130, try different keys, odd, even, prime, composite.

When you are done, I will give you a script to do this with points, or you could convert it yourself if you know python.😉

[Black_Pawn]

I may be lacking some understanding on this matter—can anyone clarify? Let's hypothetically say someone has the ‘luck’ or the means to resolve these puzzles and acquire the BTC. Is this presumed to be legal, and if so, to what extent? Suppose the fortunate individual or team decides to convert it to fiat. How feasible is this, practically speaking? Is selling the BTC to platforms like Coinbase and then transferring to your bank a viable option? I don't think we can realistically expect that BOA, Wells Fargo, etc will overlook a client suddenly receiving hundreds of thousands, or even millions, of dollars... And there’s the potential of platforms like Coinbase restricting high-value transfers. This might work for smaller amounts, but some of these addresses are worth hundreds of thousands of dollars each.

Returning to the legal bit, how does one justify these funds? Informing the IRS that it was a giveaway from a random forum user is bound to raise eyebrows, right?

I'm not intending to discourage anyone; I'm genuinely curious about how such a substantial BTC to fiat exchange would occur without legal repercussions...