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by lxgr 927 days ago
This is very hard to get right.

Some Bitcoin SPV clients have tried solving an almost equivalent problem, but the obvious approach does not work for various subtle reasons: https://eprint.iacr.org/2014/763.pdf

1 comments

Oh, it's definitely not easy to get this right properly. I just wanted to point out that things aren't as clear-cut impossible as the comment suggested.