Word #60 00000111011
alter — BIP39 word #60
"alter" is word #60 of the 2048 words in the official BIP39 English wordlist, between also and always.
In a seed phrase it stands for the 11-bit value
00000111011,
decimal index 59.
/ˈɔːltə/ · verb: to change something, usually slightly
Russian: изменить
Binary Representation
Five 1-bits and six 0-bits; 462 of the 2048 indexes have exactly five 1-bits.
One wrong bit turns it into (leftmost bit first):
Position
#60 of 2048
Hex Index
0x03B
4-Letter Prefix
alte
About "alter" in BIP39
- "alter" has 5 letters, but the first three, "alt", already identify it, because "al" also begins 14 other words, among them alarm, album, alcohol and alert. Three letters are enough for only 604 of the 2048 words.
- "alte" is unique only within the English list: it also begins altesse in the French list, alteza in the Spanish list, alterno in the Italian list and alterar in the Portuguese list, so a four-letter backup should say which list it uses.
- "alter" appears in one of the 24 official English test vectors of BIP39: vector #22 (word 3 of 12). Every official vector passes the checksum checker, and How BIP39 works shows how the entropy turns into such words.
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Word #60 in the Other 9 BIP39 Wordlists
Similar Words — Check Carefully During Recovery
Swap two neighbouring letters and "alter" becomes later, another valid word that is easy to miss when copying a phrase.