I took the index of your words, transformed the amount to binary, included three zeros, calculated the sha256 digest, took the 1st A part of the hexadecimal to convert it to binary, extra three zeros on the 8 digits in the binary and obtained 00000010011 which translates to 19 in https://www.creativelive.com/student/chris-mccarthy-26?via=accounts-freeform_2