Bitcoin puzzle transaction ~32 BTC prize to who solves it

[nomachine]

I will release an optimized version of the program during the day. After that, I will optimize sha256_avx2.cpp and ripemd160_avx2.cpp as well. Then, I will optimize SECP256K1.

This is just the beginning. It will never run as fast as a GPU, but on a 128-core CPU with AVX-512 and Clang, it will come very close. 

[Akito S. M. Hosana]

This is just the beginning.

Can you make a GPU version right away, or is it pointless? I don't have a 128-core CPU—that's science fiction to me.

[nomachine]

This is just the beginning.

Can you make a GPU version right away, or is it pointless? I don't have a 128-core CPU—that's science fiction to me.

Who knows how long this will take, maybe months, depending on my available time. For now, I’ve kept the scalar implementation because the ModSub operation is non-trivial to vectorize, and the primary bottleneck is likely elsewhere (probably in the hash computations). My plan is to modify the Int class to support SIMD operations and then carefully implement modular arithmetic for SECP256K1 using SIMD.

[kTimesG]

I will release an optimized version of the program during the day. After that, I will optimize sha256_avx2.cpp and ripemd160_avx2.cpp as well. Then, I will optimize SECP256K1.

This is just the beginning. It will never run as fast as a GPU, but on a 128-core CPU with AVX-512 and Clang, it will come very close. 

RTX 4090: 7000 MH/s @ 450 W (no overclocking)
"Very close": @ W

[E36cat]

Prefix length : 6 bytes
Private Key   : 00000000000000000000000000000000000000000000000C04673D8F26342B51
Public Key    : 03D85C9727B7190872DF6869ED1D570A4489E3DB67D4E3B5817E1DD34B14CA936C
Found Hash160 : e0b8a2baee1b7496fe8a738563b458763bccbb5e
Target Hash160: e0b8a2baee1b77fc703455f39d51477451fc8cfc
Matched bytes : e0b8a2baee1b

[Akito S. M. Hosana]

RTX 4090

Keep your fantasies for your wallet. An RTX 4090 feels like science fiction to me too. We need a budget-friendly script—something optimized for a more affordable setup. It shouldn't require a 128-core CPU, but it also shouldn't be tailored specifically for an RTX 4090 GPU.

[nomachine]

budget-friendly script—something optimized for a more affordable setup.

And if possible, don’t move from your comfortable chair and have everything served on a plate. I know.

[kTimesG]

RTX 4090

Keep your fantasies for your wallet. An RTX 4090 feels like science fiction to me too. We need a budget-friendly script—something optimized for a more affordable setup. It shouldn't require a 128-core CPU, but it also shouldn't be tailored specifically for an RTX 4090 GPU.

So it costs you less to compute same amount of hashes using more power (like, 6 to 7 times more)?
You're basically saying that electricity is less expensive if it powers a CPU. Or that it's more expensive if it powers a GPU. I wonder what your power provider has to say about that.

You can find the science-fiction movie on vast.ai, if you actually want more bangs for a buck, no need to empty your wallet on buying an expensive device and etc. I don't even own a desktop computer anymore. The wallet will empty anyway once your home's energy bill comes out.

[gians82]

Prefix length : 6 bytes
Private Key   : 00000000000000000000000000000000000000000000000C04673D8F26342B51
Public Key    : 03D85C9727B7190872DF6869ED1D570A4489E3DB67D4E3B5817E1DD34B14CA936C
Found Hash160 : e0b8a2baee1b7496fe8a738563b458763bccbb5e
Target Hash160: e0b8a2baee1b77fc703455f39d51477451fc8cfc
Matched bytes : e0b8a2baee1b

pure coincidence, for me the key is in the E range

[nomachine]

Optimized version is there. Good luck.

https://github.com/NoMachine1/Cyclone

 

[Danielson187]

All of you with your massive GPU farms trying to brute-force the key! May I introduce you to your biggest competitor: the LuckyForcer — an ESP32-based "brute" forcer, crypto price ticker, and clock! It delivers a staggering 42 keys random per second and even features a web interface and Home Assistant integration!

https://i.ibb.co/5XSfLhnc/Lucky-Forcer1.jpg
https://i.ibb.co/N6554Fy2/Lucky-Forcer2.jpg
https://i.ibb.co/Vc8cRW1t/Lucky-Forcer3.jpg

If I’m going to have a little clock on my desk, it better be doing something useful too

[E36cat]

Prefix length : 6 bytes
Private Key   : 00000000000000000000000000000000000000000000000C04673D8F26342B51
Public Key    : 03D85C9727B7190872DF6869ED1D570A4489E3DB67D4E3B5817E1DD34B14CA936C
Found Hash160 : e0b8a2baee1b7496fe8a738563b458763bccbb5e
Target Hash160: e0b8a2baee1b77fc703455f39d51477451fc8cfc
Matched bytes : e0b8a2baee1b

pure coincidence, for me the key is in the E range

Prefix length : 6 bytes
Private Key   : 00000000000000000000000000000000000000000000000D025D44ECC6F72944
Public Key    : 033035F97FE40FD9EFD02DF1D535936F2AE8E3D2C7710A49A5A24DA53BDB5474CC
Found Hash160 : e0b8a2baee1b2c593aad750d6a310372b0bbc2be
Target Hash160: e0b8a2baee1b77fc703455f39d51477451fc8cfc
Matched bytes : e0b8a2baee1b

[Denevron]

Optimized version is there. Good luck.

https://github.com/NoMachine1/Cyclone

 

Can I write you a private message? I wanted to ask something

[mcdouglasx]

You can find the science-fiction movie on vast.ai, if you actually want more bangs for a buck, no need to empty your wallet on buying an expensive device and etc. I don't even own a desktop computer anymore. The wallet will empty anyway once your home's energy bill comes out.

Again with your biased opinions, you always assume too much. There are many countries with abundant resources where electricity hovers around $0.05 per kWh, so generalizing and assuming that everyone here is from a country where electricity is a problem is a huge bias, considering there are people from all over the world here.

[AndrewWeb]

For your listening pleasure: Orphans of the Universe - Pattern-Seeking Animals

I prefer Our Home

[kTimesG]

You can find the science-fiction movie on vast.ai, if you actually want more bangs for a buck, no need to empty your wallet on buying an expensive device and etc. I don't even own a desktop computer anymore. The wallet will empty anyway once your home's energy bill comes out.

Again with your biased opinions, you always assume too much. There are many countries with abundant resources where electricity hovers around $0.05 per kWh, so generalizing and assuming that everyone here is from a country where electricity is a problem is a huge bias, considering there are people from all over the world here.

That's not what I said. The fact that a GPU computes a magnitude of order more hashes/s than an equivalent amount of CPUs, for the same power consumption on both options, is not a personal opinion, or bias as you call it. The price/kWH is irrelevant for this comparison. It's the same reason why no one mines BTC using a GPU anymore, because ASICs are tons more efficient than a GPU, just like a GPU is tons more efficient than a CPU. No one says you can't mine BTC with a CPU, GPU, or even on a napkin if you're fast enough, though good luck with all of those.

[mjojo]

Jan 2016 - Jan 2024     = 200 pages
Jan 2024 - March 2025 = 213 pages
Total 413 pages
Imagine if BTC reach above USD 150K
 

[mcdouglasx]

You can find the science-fiction movie on vast.ai, if you actually want more bangs for a buck, no need to empty your wallet on buying an expensive device and etc. I don't even own a desktop computer anymore. The wallet will empty anyway once your home's energy bill comes out.

Again with your biased opinions, you always assume too much. There are many countries with abundant resources where electricity hovers around $0.05 per kWh, so generalizing and assuming that everyone here is from a country where electricity is a problem is a huge bias, considering there are people from all over the world here.

That's not what I said. The fact that a GPU computes a magnitude of order more hashes/s than an equivalent amount of CPUs, for the same power consumption on both options, is not a personal opinion, or bias as you call it. The price/kWH is irrelevant for this comparison. It's the same reason why no one mines BTC using a GPU anymore, because ASICs are tons more efficient than a GPU, just like a GPU is tons more efficient than a CPU. No one says you can't mine BTC with a CPU, GPU, or even on a napkin if you're fast enough, though good luck with all of those.

I talked about this because I've often seen you bringing up electricity costs as an issue, generalizing.

The wallet will empty anyway once your home's energy bill comes out.

Regarding the other thing, you're absolutely right.

[pbies]

@nomachine

For my local 9950X and 16 threads I am getting ~100 Mkeys/s.

For vast.ai server with AMD EPYC 7642 48-Core 186 threads (up to 192) I am getting 222 Mkeys/s.

Seems like for greater number of threads it is not working properly.

I would expect much more keys/s.

[nomachine]

@nomachine

For my local 9950X and 16 threads I am getting ~100 Mkeys/s.

For vast.ai server with AMD EPYC 7642 48-Core 186 threads (up to 192) I am getting 222 Mkeys/s.

Seems like for greater number of threads it is not working properly.

I would expect much more keys/s.

I am currently using and testing AVX-256, and it is slower than AVX-512 by half. The AVX-256 workload here can cause the CPU to downclock significantly, which might negate the performance gains from vectorization. The CPU is throttling as a result.

You should switch to AVX-512 with EPYC.




Uploaded optimized ripemd160_avx2.cpp (AVX-256) to Git.