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Assuming SHA256 isn't broken, this isn't possible in Bitcoin, as the only way to find data that hashes to the same thing is when the data is the same. Since every Bitcoin block contains a hash of its parent, and thus indirectly commits to its entire ancestry, blocks with distinct history will always have distinct contents. This is probably the case for many ...


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It seems to be best practice for an exchange to run a node itself for a coin traded there. But, is there an alternative? Alternative is to rely on someone else as mentioned by sipa which isn't best practice although few exchanges do it and face consequences for it. Example: https://www.reddit.com/r/Bitcoin/comments/hpg9j3/...


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