Electrum has removed the RBF option starting with version 4.4 . All transactions have now RBF enabled by default. You can check it here https://github.com/spesmilo/electrum/issues/8490

You can use Blue wallet to control the RBF option : https://bluewallet.io/

Agree 

May the force BTC with you 

Digaran, you're like a toddler when it comes to ECC. Without the proper knowledge about ECC, group fields, etc , you will always be mesmerized by every result you're getting when you perform some arithmetical operations on the curve.


That is so stupid in so many ways. The order is a prime number and you are trying to find a divisor that is different from 1 and the number itself....I'm speechless!


Another stupidity. For example you can multiply 2 scalars over the group field but you cannot do that with 2 points.


It seems that posting whatever crosses your mind, it's your full time job! This wouldn't be a problem if you will present concrete examples from A to Z or if you will have a solid understanding about ECC. The problem is that you're lacking both. There are tons of materials about ECC and how it works - you just have to google it. The more you'll learn, the more you'll realize what a masterpiece the secp256k1 is. "Penetrate N the group order" by using a combination of subtractions and divisions is at least pointless!

These are natural behaviors when you're working on a curve over a finite field. You need to study them more (properties of curves over prime fields, pairings, embedding degree, etc) in order to avoid attributing a magical aura to every result that pops out.

Take a deep breath man and relax ! There is no need to call somebody parasite even if it's clearly a scammer! Don't forget, this is a community, I don't see the point of being toxic in your comments!

Sorry but when you put "brute force" and "coherent logic" in the same sentence , the result will be "incoherent". Brute force is the lack of a algorithm that has a logic; if there is one, then the logic part comes in. For #66 there is no other way of cracking it apart from brute force ! Any reduction technique that you think it will work, it won't,  because all we have is the output of RIPEMD160(SHA256(Public Key)). Unless you broke SHA256 and RIPEMD160 all together and somehow managed to recreate the 256 bits input from a 160 bits output, then this is pointless.  As you could see from other posts, people have tried already all sorts of techniques : statistical analysis regarding keys distribution in a certain range, "magic" relationships between wallet keys (with or without the knowledge of Pub Key), etc.

Try to read more about address generation process. One you've done, move on to the signature generation part where you can read about other interesting potential vulnerabilities like nonce reuse , nonce share , lattices and so on ! You will see how interesting the secp256k1 curve really is !

Start with this : https://www.oreilly.com/library/view/mastering-bitcoin/9781491902639/ch04.html

Cheers!

Did you at least bother to use the search function in this thread to read why there are outs in those transactions?

guys, we don't talk about knowing the first bit, but finding it using an algorithm. It's pointless to spit out a public key when you know the private key that generates it. Take the pub key of puzzle #120 and post the first bit (discard the 0s MSB , of course). If you manage to find that bit you can extend the algo to find out all the other remaining bits.

Sure : follow the same logic / algorithm that you applied when you discovered that the first bit is 1.
Nobody poses such an algorithm as we speak, modular math on prime fields forbids it.

Not to be a smart pants, but the question is silly and the answer will follow the question :  #66 lies somewhere between 0x20000000000000000 and 0x3ffffffffffffffff .



Totally agree with GoldTiger69 and albert0bsd here! One single bit position will break ECC!

Well, the code is working as it should, so why should he change it? It finds the priv key from multiple signatures, when some LSB or MSB of each signature nonce is leaked.