Quote from: Hal9900 on June 25, 2019, 08:36:02 PM

If bots are that powerful why cant they just take every word in Websters dictionary and figure out every possible 24 word combo possible?

The total possible number of words to choose from is actually much smaller than that. The BIP39 wordlist I linked to before contains 2048 words. Some 24 word combination of those 2048 words will give you the seed to every bitcoin wallet that has ever or will ever exist. Why the bots don't do that is simply because of how staggeringly large a number that is.

Each one of those words encodes 11 bits of entropy. 24 words give you 264 bits, but as the last 8 bits are a checksum, your 24 word seed is actually 256 bits of entropy. 2^256 is a very big number:

115,792,089,237,316,195,423,570,985,008,687,907,853,269,984,665,640,564,039,457,584,007,913,129,639,936

More easily written as 10^77. For comparison, there are 10^18 grains of sand on Earth. There are 10^50 atoms on Earth. Even a bot running on a supercomputer 24/7 for your entire life will never find a single match. Here's another way of thinking about it I explained in another thread a few weeks ago:

Quote from: o_e_l_e_o on June 04, 2019, 05:44:16 PM

Let's say we have a trillion planet Earths. On each Earth, there are a trillion people. Each person has a trillion computers. Each computer generates a trillion keys a second. All these computers have been creating a trillion keys per second since the birth of the universe 13.7 billion years ago. 10^12 * 10^12 * 10^12 * 10^12 * 60 * 60 * 24 * 365 * 13.7 * 10^9 = 4.3*10^65. This means thay they would have so far generated approximately 0.0000000004% of all private keys.