Quote from: NotATether on Today at 11:44:22 PM

You already have 11 words: possible wage deliver gossip first party hair antique salute fuel survey miracle, the 12th word is a combination of 1000110 and a 4 bit checksum. So the last word 10001101011 "miracle" is actually invalid.

Your first 128 bits are 10101000100 11110110001 00111010000 01100100111 01010111011 10100000100 01101000010 00001001111 10111110110 01011101111 11011010101 1000110. This is the 128-bit entropy. It is 0xa89ec4e8327577411a104fbecbbf6ac6 in hex.

Your checksum is first_4_bits(SHA256(entropy)), or for your example:

SHA256(0xa89ec4e8327577411a104fbecbbf6ac6) = 0xfdd211682c17f1af399453a541827c07

We take the first 4 bits of this hex, which is 7 ==> 0111. Then we append this to the entropy to get:

10101000100 11110110001 00111010000 01100100111 01010111011 10100000100 01101000010 00001001111 10111110110 01011101111 11011010101 10001100111

Nah, don't confuse him, i'm pretty sure the checksum is 1011.