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Author Topic: == Bitcoin challenge transaction: ~1000 BTC total bounty to solvers! ==UPDATED==  (Read 60777 times)
This is a self-moderated topic. If you do not want to be moderated by the person who started this topic, create a new topic. (11 posts by 1+ user deleted.)
Cazemiro
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April 22, 2025, 12:20:58 PM
 #1141

This puzzle is very complex!!
With the solution of 68, we create new hopes...
Congratulations to everyone involved.
VashaUdacha777
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April 22, 2025, 02:26:16 PM
 #1142

Thank you! It was very interesting to solve the puzzles.
DrShams
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May 01, 2025, 11:13:30 AM
 #1143

In Case You Missed It
Puzzle #69 Found on 30-4-2025
0x0000000000000000000000000000000000000000000000101d83275fb2bc7e0c
otterosch
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May 11, 2025, 11:15:18 AM
 #1144

In Case You Missed It
Puzzle #69 Found on 30-4-2025
0x0000000000000000000000000000000000000000000000101d83275fb2bc7e0c


I just save a link to Blockchain explorer and the wallet, so you see very quick when a puzzle is solved (-> funds = 0 Cheesy)
fecell
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May 28, 2025, 11:23:53 AM
 #1145

In Case You Missed It
Puzzle #69 Found on 30-4-2025
0x0000000000000000000000000000000000000000000000101d83275fb2bc7e0c
I just save a link to Blockchain explorer and the wallet, so you see very quick when a puzzle is solved (-> funds = 0 Cheesy)
Blockchain explorer didnt show private key.
https://privatekeyfinder.io/bitcoin-puzzle/
this link show all puzzle's addresses too.
mahmood1356
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August 22, 2025, 12:10:34 AM
 #1146

unfortunately, there is a possibility of missing the desired value.

That said all no? The possibility of missing the target value with bigger keys is great.
many test was. real steps to find was different.
22-bit at this test is:
1011011110010000001111 777854
but anyway its better vs range(2**21, 2**22-1)
Lets say this is a private key, 3857991093436143 and you only know it starts with 3, that's all. Now that you have no other knowledge about the key other than what it starts with, can you give us a %100 working method to reduce the size of that key and still finding it successfully?

If you can do that, congratulations because you just partially broke elliptic curve.

Can I express my opinion on this?

I have examined this in most of the solved puzzles and I think it can be used to filter ranges. Multiply the decimal equivalent address of the target address's checksum by the number 3 and repeat this multiplication until the calculated number reaches the range of the desired puzzle. With a high probability, we can eliminate the range before that number from the search because most of the puzzles had their keys near the number obtained with this calculation or were located after that number. Perhaps it will help filter ranges.
satscollector
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August 22, 2025, 12:12:38 PM
 #1147

Mempool sniping. What is the latest?

Puzzles 66 and 69 suffered mempool sniping by multiple entities. Any new sound techniques yet to avoid it? I already read about the private submission to well-known miners.
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