Can publishing a Bitcoin transaction-label backup leak wallet addresses I never posted?

Yes. Label exports can include address and output references, including identifiers that never appeared on a public profile. Combining the file with descriptions may reveal more than the chain alone.

The answer

Yes. Label exports can include address and output references, including identifiers that never appeared on a public profile. Combining the file with descriptions may reveal more than the chain alone.

What to do next

Keep BIP329 exports encrypted and avoid sharing identifiable labels with strangers.

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