I took the index on the words, converted the variety to binary, additional a few zeros, calculated the sha256 digest, took the very first Element of the hexadecimal to convert it to binary, included 3 zeros towards the 8 digits in the binary and acquired 00000010011 which interprets to 19 https://kingslists.com/story20728504/invalid-bip39-phrase-things-to-know-before-you-buy