What’s the deal with those online tools claiming to be able to collide private keys? Basically, they’re just scams.

Interestingly, some second-hand platforms actually have people selling these things. You can dig up a bunch of information from the buyer lists, and maybe when they’re old, they can turn around and sell health supplements (laughs). That’s just ridiculous.

But from a technical perspective, where is the problem? We need to talk about the SHA-256 hash algorithm.

A little-known fact—if all the computing power in the world were used to crack a SHA-256 hash, the number of possible combinations, 2²⁵⁶, is astronomically large. It would take far longer than the age of the universe to try them all. You can think of it mathematically: this is fundamentally impossible.

So those tools claiming to find collisions or generate specific private keys fundamentally violate the basic principles of modern cryptography. Instead of wasting money on these, it’s better to learn how to properly store your mnemonic phrases and private keys. That’s the real way to go.