Inicio › I have eleven of my twelve words

I have eleven of my twelve words

Why it is ~128 and not 2048

A twelve-word phrase is not a list of loose words. It is a number cut into eleven-bit pieces, with a final part that verifies the rest. BIP-39 puts it plainly: “a checksum is generated by taking the first ENT / 32 bits of its SHA256 hash”, and then “these concatenated bits are split into groups of 11 bits, each encoding a number from 0-2047” — BIP-39.

In a twelve-word phrase that checksum is 4 bits. Which means only one word in sixteen produces a valid phrase in the gap. That leaves about 128 candidates, not two thousand.

Each one opens a different, perfectly real wallet. The one you want is the one with your coins in it.

If you also lost the order, that is a different problem

Missing one word and not knowing the order of the rest are problems of completely different size. Twelve words can be arranged in nearly five hundred million ways, and that is no longer a search you finish on your laptop in an evening.

If that is your case, write down everything you are certain of first — which words they are, which ones definitely go at the start or the end. Every certainty cuts the space enormously.

Where you run the search is the only dangerous part

Tools for this exist and are open source. The rule is not which one — it is where: the search runs offline, on a machine you control, with the eleven words you already have.

Do not type your eleven words into a website. Not any of them. Even an honest one means your words have left your machine and you no longer control them. A service asking for them to “help you complete the missing one” is asking for precisely what it needs to empty your wallet.

If you can, do it on a disconnected machine. Eleven words out of twelve is nearly the whole key.

Nobody who offers to recover it is helping you

Asking this in public attracts private messages within hours. The rule has no exceptions: there is no legitimate reason for a stranger to need your words — not to complete them, not to verify them, not to “check whether it is fixable”.

Anyone messaging you offering recovery after you post about this is working your situation, not your problem. With eleven of twelve, handing them over is handing over the wallet.

And when you find it

Move the funds to a new wallet with a new phrase, and write that one down completely before you move anything. The old one has been through a machine running an exhaustive search and now exists in more places than you can track.

This time also write down which wallet created it and in what year. Those two lines cannot spend a satoshi, and they are exactly what was missing for most people who end up asking this question.