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Date: Tue, 19 Jul 2022 19:13:41 -0400
From: Peter Todd <pete@petertodd.org>
To: Ruben Somsen <rsomsen@gmail.com>,
 Bitcoin Protocol Discussion <bitcoin-dev@lists.linuxfoundation.org>
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In-Reply-To: <CAPv7Tja_E5e=3J_XSxchFoFbz0jiXqn5b4FnjBYb8d44QKAB+g@mail.gmail.com>
Subject: Re: [bitcoin-dev] How to do Proof of Micro-Burn?
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On Wed, Jul 20, 2022 at 12:23:40AM +0200, Ruben Somsen via bitcoin-dev wrot=
e:
> The goal is to burn multiple amounts (10, 20, 30, 40) in a single OP_RETU=
RN
> (100) and specifically indicating how much of the total is intended for
> what use case. A merkle sum tree achieves this.
>=20
> (1a)  100      (1b)  ABCD       (2a)  100     (2b)  ABCD
>     /    \          /    \          /    \         /    \
>   30      70      AB      CD      30      70     AB      CD
>  /  \    /  \    /  \    /  \    /  \           /  \
> 10  20  30  40   A  B    C  D   10  20          A  B

=46rom a practical point of view, note that the merkle-sum-tree is only use=
ful in
cases where you're burning significantly less than a transaction fee. For t=
he
forseeable future, that's <~$50, probably less.

Trusting a well-known third-party with $50 really isn't a big problem. So I
think adding more clever cryptography to avoid trusting the third party to
complete the burn isn't really necessary.

--=20
https://petertodd.org 'peter'[:-1]@petertodd.org

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