On Wed, Jul 20, 2022 at 12:23:40AM +0200, Ruben Somsen via bitcoin-dev wrote: > The goal is to burn multiple amounts (10, 20, 30, 40) in a single OP_RETURN > (100) and specifically indicating how much of the total is intended for > what use case. A merkle sum tree achieves this. > > (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
From a practical point of view, note that the merkle-sum-tree is only useful in cases where you're burning significantly less than a transaction fee. For the 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. -- https://petertodd.org 'peter'[:-1]@petertodd.org
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