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Safety · What to share

What data is safe to share and what isn’t (table)

To know whether your case has a way out, information is needed — but no secrets are. This table separates the two once and for all, and it works with me or with anyone else.

October 13, 2026 · 4-minute read

The table

DataSafe to share?
One of your addressesYes: it is public
A transaction identifierYes: it is public
A screenshot of the balanceYes
Which app created the walletYes
The year you created itYes
How many words are missing and whereYes
The approximate password lengthYes
The style of your passwordsYes, better spoken than written
The file’s parameters (scrypt, rounds)Yes
A master public key (xpub)With care: it reveals your history
The complete wallet fileNot during an assessment
One or several words of your phraseNo
The complete phraseNever, to anyone
The passwordNever, to anyone
A private keyNever, to anyone

The three rows that need explaining

  • The master public key. It can’t spend, so it isn’t a theft risk. But it reveals every address and your whole history, present and future. That is privacy, not money. Share it with whoever is assessing your case; don’t post it on a forum.
  • The complete file. Without the password it is useless, but there is no reason to hand it over during an assessment: the parameters are enough. There comes a time to work with it, and by then there is a contract.
  • One or several words of the phrase. Even a few reduce a thief’s work. And above all: they are not needed at all for an assessment. If someone asks for «just a few», you know what that is.
The rule that sums up the whole table: share what describes your case, not what opens it. Everything in the top half describes; everything in the bottom half opens.

And one thing about sensitive material

When the time comes to do the real work, some data is genuinely needed. How it is handled matters as much as how it is requested: it isn’t written in emails, isn’t left in chats and isn’t stored anywhere afterwards. What can be spoken is spoken; what isn’t needed isn’t asked for.

If someone asks for anything from the bottom half of the table in a first contact, the conversation ends there. There is no exception, no urgency that justifies it and nobody official enough to skip it.

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