Help Bitcoin Public Key Why can’t I convert the taproot public key through the private key? #1601

1. 
   Xxxxxx-dot commented at 12:52 pm on September 3, 2024: none

   #include <stdio.h> #include <stdlib.h> #include <secp256k1.h> #include <secp256k1_extrakeys.h>

   int main() {

   secp256k1_context *ctx = secp256k1_context_create(SECP256K1_CONTEXT_SIGN | SECP256K1_CONTEXT_VERIFY);
   
   
   unsigned char privkey[32] = {
       0x7d, 0x48, 0x1e, 0x43, 0x55, 0xd5, 0x1c, 0x82,
       0x4e, 0x8d, 0x02, 0xe6, 0x17, 0xd0, 0xe1, 0x88,
       0xba, 0x97, 0x68, 0x5e, 0x55, 0xf8, 0x65, 0x57,
       0xd1, 0xd8, 0x3d, 0x64, 0xd1, 0xc8, 0x95, 0x4b
   };
   
   
   if (!secp256k1_ec_seckey_verify(ctx, privkey)) {
       printf("Invalid private key\n");
       secp256k1_context_destroy(ctx);
       return 1;
   }
   
   
   secp256k1_pubkey pubkey;
   
   
   if (!secp256k1_ec_pubkey_create(ctx, &pubkey, privkey)) {
       printf("Failed to create public key\n");
       secp256k1_context_destroy(ctx);
       return 1;
   }
   
   
   secp256k1_xonly_pubkey xonly_pubkey;
   if (!secp256k1_xonly_pubkey_from_pubkey(ctx, &xonly_pubkey, NULL, &pubkey)) {
       printf("Failed to convert to x-only public key\n");
       secp256k1_context_destroy(ctx);
       return 1;
   }
   
   unsigned char output[32];
   if (!secp256k1_xonly_pubkey_serialize(ctx, output, &xonly_pubkey)) {
       printf("Failed to serialize x-only public key\n");
       secp256k1_context_destroy(ctx);
       return 1;
   }
   
   
   printf("Taproot public key (x-only): ");
   for (size_t i = 0; i < 32; i++) {
       printf("%02x", output[i]);
   }
   printf("\n");
   
   
   secp256k1_context_destroy(ctx);
   
   return 0;
   

   }

   I need t2pr public key

   I need an example, can anyone help me?

2. 
   Xxxxxx-dot commented at 12:53 pm on September 3, 2024: none

   Such a conversion is wrong taproot public key
3. bitcoin-core locked this on Sep 3, 2024
4. ?
   converted_to_discussion real-or-random

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