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by nullc
723 days ago
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Nah, you can't recover an extended public key from signatures. Though lots of users use wallets which use public derivation and hand the extended pubkeys over to third parties. These days I regret coming up with the scheme, I'd intended it to be a privacy boost by making it easier and safer to use multiple addresses -- but in practice it's used in places where individual keys would have been fine, and it hurts privacy more often than not. :( |
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