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Nice write up! Are there security or privacy implications of using P2PK or is it just less efficient and more costly, or something else?

I'm not aware of any security considerations, but the standard bitcoin advice still applies: avoid pubkey reuse, make a new one every time

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I believe P2PK is vulnerable to Shor's algorithm since the public key is exposed on the blockchain

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I don't think that is a vulnerability in any meaningful sense

From what I understand, classical computers cannot execute Shor's algorithm within the lifetime of the universe

And quantum computers, if they are not a scam, are supposedly decades away from being able to run it

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fair point, just wanted to mention it 👀

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