They didn’t catch the hacker, and he is still unknown. The hack itself was only recently discovered after 5 years.


You can find details here: https://bitcointalk.org/index.php?topic=5553496.0

Back in December 2020, something went down in Bitcoin history that barely made any noise at the time… but it turns out it was the biggest theft ever recorded, not just in crypto, but in all of finance.

I’m talking about the LuBian mining pool hack.

LuBian was a Chinese mining pool, ranked among the top in the world back then. Huge hashrate, big reserves, and apparently… some really bad security. Their wallet system was using 32-bit private key entropy (basically the equivalent of locking Fort Knox with a bike lock).

On Dec 28–29, 2020, someone brute-forced those weak keys and swept 127,426 BTC into their own wallets. At the time, that stash was worth about $3.5 billion. For context:

Central Bank of Iraq robbery (2003) → $1B

Mt. Gox collapse (2014) → $450M

Ronin hack (2022) → ~$620M


LuBian’s loss was triple the size of any confirmed theft in finance up to that point.

Here’s the crazy part: instead of going public with a scandal, LuBian just quietly shut down in early 2021. They even tried something desperate — sending 1,500+ OP_RETURN messages on the blockchain begging the hacker to return the coins (costing them 1.4 BTC in fees). No luck, of course.

Fast-forward to today, those 127k BTC are worth around $14.5 BILLION. That’s more than any bank robbery, gold heist, or cyber attack in history. The coins haven’t moved (except some consolidation in July 2024), and the address is now one of the top 13 biggest in Bitcoin.

This is wild for a few reasons:

1. It was a single hit, pulled off in hours.


2. The loot is visible on-chain for everyone to see.


3. Nobody’s been caught, and the funds are basically untouchable without triggering worldwide alerts.



This is the ultimate “perfect crime” in crypto, not because it was smart (their security hole was embarrassingly bad), but because the thief is still sitting on the largest untouched fortune in history.

More details here:
https://rekt.news/the-one-that-got-away

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It's just like having the cards in your hands.  The website is responsive so that you can use it on your phone or tablet too.

How to use:

Flip the Black Card: Hit "Q" or click the "Flip the Black Card" button.
Flip the Silver Card: Hit "W" or click the "Flip Silver Card" button.

Moving Cards:
On Desktop: Click and hold the silver card, then move your mouse.
On Mobile/Tablet: Tap and hold the silver card, then drag your finger.

Keyboard Controls:
Arrow keys can Control the silver key movement.

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.

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.

yeah, I'm not confident anymore about the security of Bitcoin and secp256k1, especially when the solvers of these large keys are not willing to share what methods they used to reveal the private keys, the whole purpose of this challenge is to prove the immunity of the math behind bitcoin from any attack, so when someone is able to solve the challenge and not coming out to explain the method, this is basically telling us that someone knows a backdoor.

yeah, I'm not confident anymore about the security of Bitcoin and secp256k1, especially when the solvers of these large keys are not willing to share what methods they used to reveal the private keys, the whole purpose of this challenge is to prove the immunity of the math behind bitcoin from any attack, so when someone is able to solve the challenge and not coming out to explain the method, this is basically telling us that someone knows a backdoor.

this is not the right place to ask for money, this thread is meant for storming and sharing ideas about solving the challenge.

Let's remember that this is not really a "puzzle", there's no pattern or hints, it's crude measuring instrument, of the cracking strength of the community, that's the purpose of this challenge.

I think the puzzle creator should reveal the public keys for all the keys bigger than 120bit

Let's pretend there was funds in the address in your example 1ArWUwF2WfPnDubReohn2vtPodfPpG5Evq ,  still they won't be able to move those funds since they don't know the private key of that address, the steps you provided is not enough to do that.

Mercedes-Maybach GLS will meet your needs for comfortable and smooth driving

this is only gonna lead to the creation of a new kind of cult the only solution to defeating the darkness starts from the will of the individual to change and act kindly to others and to spread love and good in every moment of their life, that's because we live in a world governed by chaos and cant be controlled

this is not financial advice but if you want to invest in NFT project you should look for things like the artist's history the team the roadmap the community and the utility

you summed it up very accurately the internet is a natural evolution for the library but the biggest disadvantage for the internet against the library is the flood of trivial information plus misinformation it's the biggest problem the internet is facing today

it's gonna be an interesting era for Twitter I don't expect drastic changes immediately but I think they will slowly try to make it more a profitable platform that's for sure

في انتظار قيام دولة كبرى بتبني البتكوين كعملة رسمية , دولة كبرى واحدة كفيلة بجعل العديد من الدول ان تعيد النظر حول البيتكوين

I wonder what kinda of person you have to be to try and hack forums accounts