A little late but, congratulations to the winners of puzzle 69.

@magnastro

with -S parameters bloom filter files are created and used when you re-run the program

BSGS's bloomfilters aren't related to address or specific public keys, Also they are independent of the target range and also is indifferent to compressed or uncompress public keys (both are the same internally)

parameter -l is usless for bsgs.

what you described it isn't kangaroo it i just regular cracking search and it doesn't have the square root of N benefit of birthday paradox.

You need tables full of DP to make it more efficient and to be able to use the square root of N that bring the Kangaroo algorithm by the birthday paradox.

Kangaroo is faster trustme, algorithm is difficult to explain at first glance.

As some other users explain before

Tame kangaroos jumps pseudo-random but deterministic from a know point like Start Base range (0x7......) or any other know value near our target publick key, so each time that a DP point (Distinguished Point with some amount of bits in ZERO in the X coordinate) is found we know its exact value.

In the other hand Wild kangaroos jumps pseudo-random but deterministic from an UN-know point like the target key, so each DP value that we found we only knows its relative value to our target key.

So the bigger dataset for tame or wild DP we have more probabilities that one item in one dataset is found in the another dataset, one that you found a match you automatically can translate all the Unknown DP into its real value this include the TARGET UNKNOWN PUBLIC KEY.

According to the birthday paradox such collision must occur soon of later so you with math/statics can calculate what are those odds for each new found value. Those odds grown exponentially.

Remember in the original birthday paradox in a room with 25 random people the probabilities that two of them have the same day of birthday are near 50%.

CLOSED due to no one is interested

Do you think that I did that test manually?

No, it was done with a script without use of any external wallet, TX was crafted from zero and broadcasted with API

I already did that test and it is still Replaceable, I did 10  CPFP  in a row

A (Original TX)-> B (CPFP )-> C (CPFP )-> D (CPFP )-> E (CPFP )-> ....

and then

A (TX  RFB) -> X

And if the fee is bigger and the miners include it on its block and mine it, then  all the previous CPFP  are Replaced as they never happened in first place.

But again this depends ons miners and luck that your TX is confirmed first (That is outside of your control)

The amount that I point in my previous post it is to solve in matter of seconds, but those challenges usually takes months or even years (all depends of your current hardware speed)

Also just need to point that those are for address, when we talk about public keys  even a CPU can solve those weak public keys in matter of seconds o less than 10 minutes all this comes from the thing that we have algorithms for public keys such as Kangaroo (This topic name) and BSGS (Limited by Memory) both of them with Math shortcuts that help to solve those weak keys with a complexity of square root of N

Well I agree with that that is why I just do that for some other activity together in exchange, like go to have a meal together, at the end when I get out with my friends usually we have fun and we don't matter if today one  of us pay, we know that the other is going to pay.

In any case there is no rush to ask the payback right if you see that they aren't going to make it, then is better not to ask, at the end if you already fulfill the challenge it is still a win for you.


Agree 100% with that last one

Well even if i really like to read, i never did bets on that because it is not something really measurable, i prefer it on physical things. I just mentioned it as an example.

So it is better to name those CEX to see if one of those fees better my needs, every time that I try to convert Fiat money into BTC I usally lost some 5% percent (Comparing the current market price of BTC againts my Fiat rate change), this may vary depending of the amount of BTC that i am buying. And always moving that BTC to another wallet outside of the exchange (Maybe this is my problem) because if I keep that virtual BTC inside the Exchange i didn't lose that amount.

I already try many varitions of this like buying BTC directly in P2P
Buying USDT and the converting to BTC and other like this.

Maybe if you name a CEX and the method used to convert Fiat in to BTC to a self-custody wallet outside of the CEX and just lossing 0.088% on fees comparing the final BTC Amount againts the Fiat amount that you use it should be VERY COOL!


It is private because i am not going to disclose which is your USDT wallet and I expected the same for my BTC wallet.

Well maybe you aren't seen the full picture, In my point of view it is a win-win scenario even if you partner/friend doesn't fulfill the agreement at least you still reach your goal ( lose weight, do some daily exercise, read some books, IDK you name it!), Because the only way to really lose in this scenario is when you fail to your self in achieving your own goals.

Another thing is that you always can have some extra friend as escrow to ensure the fulfill of the bets/aggrement

Have you ever had a friend or co-worker who enjoys making friendly bets to Self improve?

For instance, you could bet on losing X amount of weight this month?

Last year, I made a similar bet to gain some weight (I'm very thin). So in my case my friend was also thin so we make a Bet to reach some Amount of weight before the end of the month. The bet wasn't a big deal it was only to buy a full meal for the other person just in case of not meet the expected weight. For example If my friend don't reach the expected weight and I reach it, then my friend should pay my meal. I that occasion we both reach the the expected weight and none of us need to pay the other person meal.

Do you have some similar story?, please share it, i would like to read it.

This may not be a typical sports or casino topic, but I think self-improvement deserves some attention.

Another question: What do you think would be a fun and effective self-improvement challenge we could all try?

For example, how about a challenge to do 50 push-ups a day for a month? Would you bet on yourself to complete it?

I know this might sound like just another "shitpost", but I want to raise a genuine concern about the noticeable decline in post quality due to campaign quotas, including both low-quality replies and poorly constructed OPs.

Key Issues

Superficial Replies: Many users post replies without fully reading the thread, or even checking if someone else has already provided a similar solution or expressed the same point. This leads to repetitive and shallow contributions that don't add much value to the discussion.

Opinion Overload: While it's valid to share personal opinions, many posts end up as simple "IMO this and that..." statements. Instead of fostering meaningful discussions, it often feels like a spam contest, where the goal is just to hit the post count rather than engage thoughtfully.

Repetitive Topics: For example, this week alone, I've seen three different threads about using VPNs for online casinos. Last week, it was a similar number of threads about unpopular sports betting. These topics seem to cycle through the forum repeatedly, making it hard to find something fresh to contribute to, i know that those topics for a newcomer may be attractive to read, but for those users that already have some time on this sections those post might loks like repetitive shitposting.

The Endless Cycle of "IMO"

One of the my biggest frustrations is seeing top threads that don't aim to reach a conclusion or dive deeper into the topic. Instead, they become endless loops of replies like "I think this..." or "In my opinion that..." with no real effort to advance the conversation. This blocks meaningful talks and fills the forum with junk.

What are your thoughts? How do you balance meeting campaign requirements while contributing meaningfully to the forum? I'd love to hear your perspective

Well i can do up to 0.002BTC monthly


That means that you want an extra percentage? why?

When people change their btc on for usdt or another coin on CEXs they usually lose some between 2% to 10% depending of the CEX fees.

I offer:
- Even trade (You don't lose that percentage)
- I pay for network fees.
- Privacy

I am not going to move from those terms and I can wait until someone is interested.

I wonder why all those Single message accounts don't stop to appear here and there, Saying that they have magical access to some data/formula/method.


This is not a puzzle it is a challenge in words of the creator:


How many times we need to point to that post?

I didn't deleted any of my messages what are you talking about?

Maybe you are confused there is another user who tested Mara it was WanderingPhilospher

I said it as an alternative to MARA. if some day I solve one of those low bits puzzle i am going to use MARA but i am going to documented all the process properly.

I already told you guys the other and only valid solucion is mine your own block or get contact with a miner (an expert one) and reach some agreement to include your TX without reveal it on public mempool.

this may be difficult because most miners stick to already proven methods and they aren to modify their process only for one extra transaction.

The number of address/s should be near 10^15 (Peta-addresses/s) to 10^18 (Exa-addreses/s) to solve such puzzles in seconds. Remember each extra bit increment the difficult twice the previous value.

From what I understand:

Distinguished points (DP) are selected based on certain properties, such as having a specific number of leading or trailing zeros. The choice depends on what's more efficient for comparison. For a target range of length 2^X, you typically select enough zeros to generate one DP on average every 2^X jumps.

This relies on the birthday paradox probabilities. A lower X means more frequent DPs, but it increases disk usage and processing time due to frequent comparisons. Conversely, a higher X reduces DPs, lowering collision chances between wild and tame kangaroos. The goal is to balance DP frequency to maximize collisions without exhausting resources.

To approach this effectively, you need:

A solid understanding of statistics and probability.
Clear objectives and expected outcomes.
Programming skills in logic and algorithms.
CUDA expertise for GPU optimization.

Disclaimer: I'm still learning about the Kangaroo Algorithm, so some details here might be incomplete or wrong (If this happend please don't roast me just point it and i am going to be glad to learn more about it.)

Yes, I am still looking for someone to trade with periodically. My plan is to purchase near on 1 mBTC (0.001 BTC) once per month. Regarding the price, I am looking for a fair, even trade based on the current market rate on the day of the transaction.

I will cover the transaction fees for Bitcoin (limited to 1 input and 2 outputs, with a fee range of 5–10 sats/vByte  this is usually 1 USD) . I will send the payment in USDT, preferably via the Polygon network, immediately after the BTC transaction has been confirmed.

To ensure privacy and minimize traceability, I prefer to keep the transactions private just for us. For trustworthiness, I can provide signed text messages with the instructions using my staked Bitcoin address.