Subject: Re: [bitcoin-dev] BIP proposal: Inhibiting a covert attack on the Bitcoin POW function

From: Gregory Maxwell <[email-masked]>
Date: Thu, 6 Apr 2017 21:38:31 +0000

On Wed, Apr 5, 2017 at 9:37 PM, Gregory Maxwell <[email-masked]> wrote:
> each block MUST either contain a BIP-141 segwit commitment or a
> correct WTXID commitment with ID 0xaa21a9ef.

It was just pointed out to me that the proposed ID (which I just
selected to be above the segwit one) collides with one chosen in
another non-BIP proposal.  This wasn't intentional, and I'll happily
change the value when I update the document.