When calculating the general public key, what precept is used to take the even or odd y coordinate for x?
It's not chosen; it's computed. The elliptic curve level multiplication algorithm outputs some extent, which has an X and Y ...
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taproot – Why is it essential to reveal a bit in a script path spend and examine that it matches the parity of the Y coordinate of Q?
As per BIP341 : "First, we outline taproot_tweak_pubkey for 32-byte BIP340 public key arrays. The operate returns a bit indicating ...
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