Bitcoin puzzle transaction ~32 BTC prize to who solves it

[HABJo12]

I love to

[3dmlib]

I love to

OK.
Address: 1FXsMVXVV52zyLhHzZKg6wGous6KzMW6bM
Private key in 71 puzzle range.
Tomorrow 24 June 2025 between 13.00 and 14.00 UTC time I'll transfer from it, public key will be exposed and you can try to intercept.
Thanks.

[HABJo12]

IF you can please make the range shorter its just playing for searching for such fund on a wide range

[3dmlib]

IF you can please make the range shorter its just playing for searching for such fund on a wide range

RCKangaroo do it on my computer less then a minute. Even puzzle 81 takes about 5 minutes to find private key from public key. Don't need to make range shorter. For next bot competitions I thinking to make range even bigger for more fun but with bigger reward.

[henry1111]

what is the most basic puzzle i can start with?

[HABJo12]

as far as i understand RCKangaroo by itself jump with certain numbers you can finish the all range by one jump but to find the address you are targeting you have to make the jumping mechanism by the well known number so it will get after running some sequence , i don't know much about codding but i am learning most things in here.

[3dmlib]

what is the most basic puzzle i can start with?

You can start with 71, but please be aware that ALL PUZZLES UNTIL ABOUT 86-87 SHOULD BE WITHDRAWN WITHOUT USING PUBLIC BTC MEMPOOL. USE SLIPSTREAM SERVICE OF MARA POOL TO WITHDRAW SUCCESSFULLY.

[zahid888]

what is the most basic puzzle i can start with?

You can start with 71, but please be aware that ALL PUZZLES UNTIL ABOUT 86-87 SHOULD BE WITHDRAWN WITHOUT USING PUBLIC BTC MEMPOOL. USE SLIPSTREAM SERVICE OF MARA POOL TO WITHDRAW SUCCESSFULLY.

And what's the plan for your $100 challenge? Gonna play it with MaraPool's slipstream, or rolling the dice with a regular mempool transaction?

[3dmlib]

what is the most basic puzzle i can start with?

You can start with 71, but please be aware that ALL PUZZLES UNTIL ABOUT 86-87 SHOULD BE WITHDRAWN WITHOUT USING PUBLIC BTC MEMPOOL. USE SLIPSTREAM SERVICE OF MARA POOL TO WITHDRAW SUCCESSFULLY.

And what's the plan for your $100 challenge? Gonna play it with MaraPool's slipstream, or rolling the dice with a regular mempool transaction?

Mempool of course. Or it will be no challenge if use slipstream.

ps: Waiting for 13.00 UTC. Also I'll place first initial tx just after block mined to have more time for fun

[Frequence]

what is the most basic puzzle i can start with?

You can start with 71, but please be aware that ALL PUZZLES UNTIL ABOUT 86-87 SHOULD BE WITHDRAWN WITHOUT USING PUBLIC BTC MEMPOOL. USE SLIPSTREAM SERVICE OF MARA POOL TO WITHDRAW SUCCESSFULLY.

And what's the plan for your $100 challenge? Gonna play it with MaraPool's slipstream, or rolling the dice with a regular mempool transaction?

Mempool of course. Or it will be no challenge if use slipstream.

ps: Waiting for 13.00 UTC. Also I'll place first initial tx just after block mined to have more time for fun

Burned that $100 in fees.
Miners: Thank you, bro.

[3dmlib]

Burned that $100 in fees.
Miners: Thank you, bro.

Thank you all for participation.
Is it possible to limit maximum fee somehow? Any ideas?
Also, where to view all mempool RBF timeline? mempool.space definitely not shows all.

[kTimesG]

Burned that $100 in fees.
Miners: Thank you, bro.

Code:

2025-06-24 13:21:45,019 [INFO ] [p71_3dm] Monitored addr: 1FXsMVXVV52zyLhHzZKg6wGous6KzMW6bM
2025-06-24 13:21:45,019 [INFO ] [p71_3dm] RIPEMD-160: 9f6845cc702a6b162fce0255387c8f7c609d72e6
2025-06-24 13:21:45,019 [INFO ] [p71_3dm] Mon UTXO: a39c45e65f35ff4398d98332fa3f4b6aaabe1316391711441b00556803b89f29 {0}
2025-06-24 13:21:45,019 [INFO ] [p71_3dm] Mon UTXO: abfbbafd607c51d723b321a632967bb12fb23642a03b52ddc76be6166e9f773b {1}
2025-06-24 13:21:45,019 [INFO ] [p71_3dm] maxOutVal: 98363 estTxSz: 339 useful UTXOs: 2
2025-06-24 13:21:56,174 [INFO ] [p71_3dm] [MP] Found unconfirmed TX
2025-06-24 13:21:56,175 [INFO ] [root] Processing TX ID: bb74f418b8b8ea18bb1c81451d7059a79e36a11289de3a765b9e71cd370fa694
2025-06-24 13:21:56,175 [INFO ] [p71_3dm] [MP] TX fee: 14366 sat; 42 sat/vB
2025-06-24 13:21:56,175 [INFO ] [root] [p71_3dm] Solving pubKey: 0216aebfc21a9b8c831a4dba02bdb08067fcd7b96a6f2f6ce2ed5300993ebc3be1
2025-06-24 13:21:59,384 [INFO ] [p71_3dm] Private key: 0x42341f438010c1b651
2025-06-24 13:21:59,385 [INFO ] [p71_3dm] Full-width private key: 000000000000000000000000000000000000000000000042341f438010c1b651
2025-06-24 13:21:59,386 [INFO ] [root] New key: 463f1adbfeb068e1981302eed3adb9ceb387dda6f90145b4cf92f856447db129
2025-06-24 13:21:59,386 [INFO ] [root] New address: 1Gw9sm693wfvMr11g6M1NuqtEnF8FFniyG
2025-06-24 13:21:59,387 [INFO ] [root] Creating TX with out value 83658

etc... fought to the very end.

Thx for the exercise though.

Is it possible to limit maximum fee somehow? Any ideas?
Also, where to view all mempool RBF timeline? mempool.space definitely not shows all.

Did you scroll the RBF timeline on mempool.space? It shows the TX has been replaced 51 times.

Two of those were mine. But looking at the timeline, it seems that the owner of the address 158tuQVCj6DTPxBawCFQcpiVVs5qkmieLY was replacing its own TX many times in a row, which is a hint of a bad coded bot.

[mcdouglasx]

Burned that $100 in fees.
Miners: Thank you, bro.

Thank you all for participation.
Is it possible to limit maximum fee somehow? Any ideas?
Also, where to view all mempool RBF timeline? mempool.space definitely not shows all.

I would suggest you donate those $100 to people who often share code here, like nomachine, for example, instead of incentivizing something that is unethical and that we all know how it will end, which will benefit the miners more than the winner of the reward.

[MrGPBit]

Burned that $100 in fees.
Miners: Thank you, bro.

Code:

2025-06-24 13:21:45,019 [INFO ] [p71_3dm] Monitored addr: 1FXsMVXVV52zyLhHzZKg6wGous6KzMW6bM
2025-06-24 13:21:45,019 [INFO ] [p71_3dm] RIPEMD-160: 9f6845cc702a6b162fce0255387c8f7c609d72e6
2025-06-24 13:21:45,019 [INFO ] [p71_3dm] Mon UTXO: a39c45e65f35ff4398d98332fa3f4b6aaabe1316391711441b00556803b89f29 {0}
2025-06-24 13:21:45,019 [INFO ] [p71_3dm] Mon UTXO: abfbbafd607c51d723b321a632967bb12fb23642a03b52ddc76be6166e9f773b {1}
2025-06-24 13:21:45,019 [INFO ] [p71_3dm] maxOutVal: 98363 estTxSz: 339 useful UTXOs: 2
2025-06-24 13:21:56,174 [INFO ] [p71_3dm] [MP] Found unconfirmed TX
2025-06-24 13:21:56,175 [INFO ] [root] Processing TX ID: bb74f418b8b8ea18bb1c81451d7059a79e36a11289de3a765b9e71cd370fa694
2025-06-24 13:21:56,175 [INFO ] [p71_3dm] [MP] TX fee: 14366 sat; 42 sat/vB
2025-06-24 13:21:56,175 [INFO ] [root] [p71_3dm] Solving pubKey: 0216aebfc21a9b8c831a4dba02bdb08067fcd7b96a6f2f6ce2ed5300993ebc3be1
2025-06-24 13:21:59,384 [INFO ] [p71_3dm] Private key: 0x42341f438010c1b651
2025-06-24 13:21:59,385 [INFO ] [p71_3dm] Full-width private key: 000000000000000000000000000000000000000000000042341f438010c1b651
2025-06-24 13:21:59,386 [INFO ] [root] New key: 463f1adbfeb068e1981302eed3adb9ceb387dda6f90145b4cf92f856447db129
2025-06-24 13:21:59,386 [INFO ] [root] New address: 1Gw9sm693wfvMr11g6M1NuqtEnF8FFniyG
2025-06-24 13:21:59,387 [INFO ] [root] Creating TX with out value 83658

etc... fought to the very end.

Thx for the exercise though.

Is it possible to limit maximum fee somehow? Any ideas?
Also, where to view all mempool RBF timeline? mempool.space definitely not shows all.

Did you scroll the RBF timeline on mempool.space? It shows the TX has been replaced 51 times.

Two of those were mine. But looking at the timeline, it seems that the owner of the address 158tuQVCj6DTPxBawCFQcpiVVs5qkmieLY was replacing its own TX many times in a row, which is a hint of a bad coded bot.

@kTimesG

Can you please share your bot script? Thanks

[jeLACOSTE]

How to safely withdraw BTC from puzzle wallets (71 included)

Hey everyone, since I’ve seen more interest lately around the puzzles and some people getting sniped, I thought I’d post a quick guide on how to do it right. Especially since puzzle 71 is very close to being found and it has over 7 BTC in it.

This method works for any puzzle where the private key is in a low range and you're able to recover it. If you just found the key and you're planning to import it in Electrum and click send... stop right now and read.

Why you shouldn't use the mempool

Once you broadcast a transaction to the public mempool (even with a high fee), the pubKey becomes visible. That means anyone monitoring the network can instantly start brute-forcing the private key and if the range is small (like puzzle 71), they'll find it in seconds. Even if you broadcast first, someone can RBF you with a higher fee and steal it.

It already happened with multiple puzzles. Some bots are running 24/7 and replacing transactions 50+ times until they win.

Correct way to withdraw

1. Generate a secure BTC address

Don’t send funds to an old or reused address. Use a new address from a wallet you control. Sparrow wallet is good, Electrum works too, or hardware wallet. Segwit is fine. Save the seed and verify it works.

2. Craft the transaction offline

Import the puzzle private key into an offline wallet or use command-line tools (bitcoin-tx or Sparrow in offline mode). Build a transaction that sends the funds to your new BTC address.

Set a high fee. I’d recommend something like 30k to 100k sats depending on size. If the TX is 300 vbytes, go with 300 sat/vB or more. Don’t cheap out on this, it’s less than $50 to secure over $700k worth of BTC.

Export the signed raw transaction as HEX. Do not broadcast it yet.

3. Use a miner relay (not public broadcast)

Now go to: https://slipstream.mara.com/

This is a private relay to the Marathon mining pool. Paste your signed TX hex and submit it. That way, your transaction goes directly to the miner and isn’t seen by the public mempool or sniping bots.

Once it’s mined, the BTC will be in your address. At that point, it’s too late for anyone to do anything the UTXO is already spent.

What if I don’t use slipstream?

Then your transaction will show up in the mempool, bots will see it, and if you’re not using RBF defense or an aggressive strategy, they can and will steal it. You’ll see your TX dropped and someone else’s version with a higher fee getting confirmed.

If you’re not 100% sure how to use slipstream or build a raw TX, ask before you risk it.

Puzzle 71 warning

We’re almost there. Someone will solve 71 soon, maybe already has. If you’re the one who gets the key, please don’t lose the funds by broadcasting it naively. Follow the steps above and you’ll be fine.

Happy hunting and stay safe.

[kTimesG]

Especially since puzzle 71 is very close to being found and it has over 7 BTC in it.

What makes you think that? All the clues lead to the exact opposite conclusion.

Even if someone makes a totally fair pool and the entire planet joins it and gets a fair share of the prize, absolutely everyone loses half or more than their investment. With that in mind, how would the puzzle be "close to being found", unless a shitload of people (and I mean a LOT of people, not a couple of thousands) are scanning randomly, and some dude gets lucky by pure chance? It can only happen, with very high chances, only if everyone drops everything and starts dedicating all their time to this.

[nochkin]

Is it possible to limit maximum fee somehow?

The only limit to the maximum fee is the sending amount itself.

[jeLACOSTE]

Especially since puzzle 71 is very close to being found and it has over 7 BTC in it.

What makes you think that? All the clues lead to the exact opposite conclusion.

Even if someone makes a totally fair pool and the entire planet joins it and gets a fair share of the prize, absolutely everyone loses half or more than their investment. With that in mind, how would the puzzle be "close to being found", unless a shitload of people (and I mean a LOT of people, not a couple of thousands) are scanning randomly, and some dude gets lucky by pure chance? It can only happen, with very high chances, only if everyone drops everything and starts dedicating all their time to this.

You can make the range more smaller in some way, scaning all the range or going random is not the best solution here. This is just my opinion, when I will find it I will let you know ahahaha

[kTimesG]

Especially since puzzle 71 is very close to being found and it has over 7 BTC in it.

What makes you think that? All the clues lead to the exact opposite conclusion.

Even if someone makes a totally fair pool and the entire planet joins it and gets a fair share of the prize, absolutely everyone loses half or more than their investment. With that in mind, how would the puzzle be "close to being found", unless a shitload of people (and I mean a LOT of people, not a couple of thousands) are scanning randomly, and some dude gets lucky by pure chance? It can only happen, with very high chances, only if everyone drops everything and starts dedicating all their time to this.

You can make the range more smaller in some way, scaning all the range or going random is not the best solution here. This is just my opinion, when I will find it I will let you know ahahaha

When you have a ton of different people each scanning on their own, without any inter-coordination, it's pretty much "random scanning". Just as if playing the lottery, as you might play the same numbers as others. But the lottery's won only when enough people actually play. Or someone buys all the tickets (like for puzzles 67, 68...).

[HABJo12]

How to safely withdraw BTC from puzzle wallets (71 included)

Hey everyone, since I’ve seen more interest lately around the puzzles and some people getting sniped, I thought I’d post a quick guide on how to do it right. Especially since puzzle 71 is very close to being found and it has over 7 BTC in it.

This method works for any puzzle where the private key is in a low range and you're able to recover it. If you just found the key and you're planning to import it in Electrum and click send... stop right now and read.

Why you shouldn't use the mempool

Once you broadcast a transaction to the public mempool (even with a high fee), the pubKey becomes visible. That means anyone monitoring the network can instantly start brute-forcing the private key and if the range is small (like puzzle 71), they'll find it in seconds. Even if you broadcast first, someone can RBF you with a higher fee and steal it.

It already happened with multiple puzzles. Some bots are running 24/7 and replacing transactions 50+ times until they win.

Correct way to withdraw

1. Generate a secure BTC address

Don’t send funds to an old or reused address. Use a new address from a wallet you control. Sparrow wallet is good, Electrum works too, or hardware wallet. Segwit is fine. Save the seed and verify it works.

2. Craft the transaction offline

Import the puzzle private key into an offline wallet or use command-line tools (bitcoin-tx or Sparrow in offline mode). Build a transaction that sends the funds to your new BTC address.

Set a high fee. I’d recommend something like 30k to 100k sats depending on size. If the TX is 300 vbytes, go with 300 sat/vB or more. Don’t cheap out on this, it’s less than $50 to secure over $700k worth of BTC.

Export the signed raw transaction as HEX. Do not broadcast it yet.

3. Use a miner relay (not public broadcast)

Now go to: https://slipstream.mara.com/

This is a private relay to the Marathon mining pool. Paste your signed TX hex and submit it. That way, your transaction goes directly to the miner and isn’t seen by the public mempool or sniping bots.

Once it’s mined, the BTC will be in your address. At that point, it’s too late for anyone to do anything the UTXO is already spent.

What if I don’t use slipstream?

Then your transaction will show up in the mempool, bots will see it, and if you’re not using RBF defense or an aggressive strategy, they can and will steal it. You’ll see your TX dropped and someone else’s version with a higher fee getting confirmed.

If you’re not 100% sure how to use slipstream or build a raw TX, ask before you risk it.

Puzzle 71 warning

We’re almost there. Someone will solve 71 soon, maybe already has. If you’re the one who gets the key, please don’t lose the funds by broadcasting it naively. Follow the steps above and you’ll be fine.

Happy hunting and stay safe.

              Dear  sir why do the attackers wait for someone to send transaction ? does sending on our wallet can show them what the hex for the address ? does the hex is shown on the mempool ? or what is the reason for using the spilstrem?  I mean if they have such capability why don't they scan by them selfs and take the funds ?