Quote from: pooya87 on August 01, 2023, 05:32:52 AM

Quote from: cfbtcman on July 31, 2023, 08:54:33 PM

~
Hi,

I found this on internet:

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

1º 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 this?
In this example I gave you, Y was odd and it worked perfectly!

Can you help ? !

That does not matter for address generation because your x value does not change when negating a public key meaning P(x,y) = -P(x,y) = P(x,-y) and we only use the x coordinate in the address.
Even y coordinate is something you should check and take some extra steps when signing and verifying ECSDSA signatures.

I have another doubt in the hands, after google and ChatGPt the doubt subsist, is there any hashed Taproot address that protects the public key identity until 1st transaction be done as in Legacy and Segwit addresses or every Taproot address simple or with tweak never protect the public key identity ?