Generally it’s simpler to work backwards from the reply. To take this method let’s begin with particulars for Bitcoin explorer’s subcommand mnemonic-new. Let’s additionally assume the 256 bit hash is reprsented as hex as 87C1B129FBADD7B6E9ABC0A9EF7695436D767AECE042BEC198A97E949FCBE14C.
% echo -n 87C1B129FBADD7B6E9ABC0A9EF7695436D767AECE042BEC198A97E949FCBE14C | bx mnemonic-new
march assault engine warrior expertise swarm pluck job put together knife pipe man pupil cube obtain analyst salute artwork clear wooden enemy vacationer lunch like
The 24 seed phrase line numbers are taken immediately from https://github.com/bitcoin/bips/blob/grasp/bip-0039/english.txt:
1087 109 596 1979 1772 1756 1334 961 1360 990 1323 1079 1724 492 1437 67 1527 103 339 2026 592 1840 1066 1038
1086 108 595 1978 1771 1755
0x43E 0x06C 0x253 0x7BA 0x6EB 0x6DB
010000111110 000001101100 001001010011 011110111010 011011101011 011011011011
10000111110 00001101100 01001010011 11110111010 11011101011 11011011011
8 7 C 1 B 1 2 9 F B A D D 7 B 6 E
1333 960 1359 989 1322 1078
0x535 0x3C0 0x54F 0x3DD 0x52A 0x436
010100110101 001111000000 010101001111 001111011101 010100101010 010000110110
10100110101 01111000000 10101001111 01111011101 10100101010 10000110110
9 A B C 0 A 9 E F 7 6 9 5 4 3 6
1723 491 1436 66 1526 102
0x6BB 0x1EB 0x59C 0x042 0x5F6 0x066
011010111011 000111101011 010110011100 000001000010 010111110110 000001100110
11010111011 00111101011 10110011100 00001000010 10111110110 00001100110
D 7 6 7 A E C E 0 4 2 B E C 1 9 8
338 2025 591 1839 1065 1037
0x152 0x7E9 0x24F 0x72F 0x429 0x40D
000101010010 011111101001 001001001111 011100101111 010000101001 010000001101
00101010010 11111101001 01001001111 11100101111 10000101001 10000001101
A 9 7 E 9 4 9 F C B E 1 4 C 0 D
Discover all the pieces matches with an extra 0x0D tucked on the top. That is the checksum that’s computed per https://github.com/bitcoin/bips/blob/grasp/bip-0039.mediawiki#generating-the-mnemonic.
The primary 8 bits of a sha256 hash for the instance above drive the checksum 0x0D that’s tucked on to the top.
% bx sha256 87C1B129FBADD7B6E9ABC0A9EF7695436D767AECE042BEC198A97E949FCBE14C
0dc811788c7e02c32b9c4b3586baf58ca27f74330c92d661042b19faa6c7e9f2
Discover all the pieces matches with an extra 0x0D tucked on the top. That is the checksum that’s computed per https://github.com/bitcoin/bips/blob/grasp/bip-0039.mediawiki#generating-the-mnemonic.
The variety of bits to be utilized from the sha256 operation above is a perform of the primary column of this desk. The second column of this desk paperwork the variety of checksum bits that utilized.
The Spanish BIP 39 indexes are an identical to the English index for the equipped 32 bytes of entropy.
% echo 87C1B129FBADD7B6E9ABC0A9EF7695436D767AECE042BEC198A97E949FCBE14C | bx mnemonic-new -l es
manga ánimo elemento vencer sultán soporte oscuro juntar pan látex oreja malla sidra cumplir pilar aldea pupa ancla capitán voraz eje tesoro luz llama
The 24 seed phrase line numbers are taken immediately from https://github.com/bitcoin/bips/blob/grasp/bip-0039/spanish.txt match these above for English above:
1087 109 596 1979 1772 1756 1334 961 1360 990 1323 1079 1724 492 1437 67 1527 103 339 2026 592 1840 1066 1038
The BIP 39 mnemonic-to-seed operation completely IS NOT invertable, and efficient seeds produced will differ wildly amongst BIP 39 language-specific seed phrase lists. Two totally different 512-bit mnemonic-to-seed mechanisms are used under (stretch and bitcoin explorer mnemonic-to-seed) for each English (en) and Spanish (es).
% echo "march assault engine warrior expertise swarm pluck job put together knife pipe man pupil cube obtain analyst salute artwork clear wooden enemy vacationer lunch like" | bx mnemonic-to-seed -l en -p "123"
809839beb19097ccfbe20c62278c9c4801497010f913a133c3d20f563a216a6cf23a5af53c13d778b278069f189aee1bd73452ec7617d935c2631edd93d70284
% stretch -f sha512 -r 2048 "march assault engine warrior expertise swarm pluck job put together knife pipe man pupil cube obtain analyst salute artwork clear wooden enemy vacationer lunch like" mnemonic123 | bx base64-decode | bx base16-encode
809839beb19097ccfbe20c62278c9c4801497010f913a133c3d20f563a216a6cf23a5af53c13d778b278069f189aee1bd73452ec7617d935c2631edd93d70284
% echo "manga ánimo elemento vencer sultán soporte oscuro juntar pan látex oreja malla sidra cumplir pilar aldea pupa ancla capitán voraz eje tesoro luz llama" | bx mnemonic-to-seed -l es -p "123"
4e0159fedf7682323f9a34a8218292faf78277727bf6cc6bb4c7f833d5920318a8dfaad8c91813984ed567fff14e7f59aa4be9890540989de0448d2f86864a4f
% stretch -f sha512 -r 2048 "manga ánimo elemento vencer sultán soporte oscuro juntar pan látex oreja malla sidra cumplir pilar aldea pupa ancla capitán voraz eje tesoro luz llama" mnemonic123 | bx base64-decode | bx base16-encode
4e0159fedf7682323f9a34a8218292faf78277727bf6cc6bb4c7f833d5920318a8dfaad8c91813984ed567fff14e7f59aa4be9890540989de0448d2f86864a4f
Lastly, a top-level hierarchical deterministic prolonged keys may be produced from the 2 512-bit seeds above.
% echo 809839beb19097ccfbe20c62278c9c4801497010f913a133c3d20f563a216a6cf23a5af53c13d778b278069f189aee1bd73452ec7617d935c2631edd93d70284 | bx hd-new
xprv9s21ZrQH143K2yEY3QSoUzx5i1ZL3rMJX4C5XikitLQruPj23MTBLhU1EiZkpQNidPxKhCR548zUpw261gJZ8x6scyQeCE67Tr2v1bAn8cx
% echo 4e0159fedf7682323f9a34a8218292faf78277727bf6cc6bb4c7f833d5920318a8dfaad8c91813984ed567fff14e7f59aa4be9890540989de0448d2f86864a4f | bx hd-new
xprv9s21ZrQH143K4SehajoujF9rWwQezrvezd7trUPBgrN1r7WkDiY3fUobvbTmbigW5vhpJzBtURszkiBRRenUapMtbBaGaWtVHL4ZWPcaZcL
