I took the index in the words, transformed the selection to binary, additional a few zeros, calculated the sha256 digest, took the initial Element of the hexadecimal to convert it to binary, extra a few zeros to the 8 digits of your binary and received 00000010011 which interprets to 19 https://bookmarkinglive.com/story19798302/new-step-by-step-map-for-bip39-english-words