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Discussion on: More on Taproot

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cftpra

Hi, thanks for your article, I have a doubt on this:

**_To create a P2TR (Pay-to-Taproot) address for a single public key, you need to:

Check that the y-coordinate of your public key is even, if not, negate the public key. Taproot requires that the y coordinate of the public key is even.
_**

What is the meaning of that? I used a x-only value where y-coordinate was odd and it seem to work, can you explain that better?