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From: Luke Dashjr <luke@dashjr.org>
To: bitcoin-dev@lists.linuxfoundation.org,
	Kabuto Samourai <kabuto@samouraiwallet.com>
Date: Thu, 7 Sep 2017 15:02:17 -0400
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Subject: Re: [bitcoin-dev] Proposal: bip32 version bytes for segwit scripts
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On Tuesday 05 September 2017 15:00:04 Kabuto Samourai via bitcoin-dev wrote:
> I think Luke and Thomas may be talking past one another. When exporting a
> root master HD seed, encoding the {x,y,z}{pub,prv} distinctions makes no
> sense, as the root seed should derive all paths for all coins. Wallets may
> need additional code to discover which paths have been used when importing
> a root seed. But when exporting / importing an account-level seed for
> watch-only and receive address generation, changing the serialization
> version bytes is appropriate and (in our view) essential to avoid loss of
> funds.

In that case, I think we should go back to the proposal I started with in 
March...

https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2017-March/013726.html

This handles not only simple HD seeds, but also multisig HD and such.

Luke