uint256 CBlockHeader::GetArgon2idPoWHash() const
{
    uint256 hash;
    uint256 hash2;
    CDataStream ss(SER_NETWORK, PROTOCOL_VERSION);
    ss << *this;
   
    // Hashing the data using SHA-512 (two rounds)
    std::vector<unsigned char> salt_sha512(CSHA512::OUTPUT_SIZE);
    CSHA512().Write((unsigned char*)&ss[0], ss.size()).Finalize(salt_sha512.data());
    CSHA512().Write(salt_sha512.data(), salt_sha512.size()).Finalize(salt_sha512.data());
   
    // Preparing data for hashing
    const void* pwd = &ss[0];
    size_t pwdlen = ss.size();
    const void* salt = salt_sha512.data();
    size_t saltlen = salt_sha512.size();
   
    // Calling the argon2id_hash_raw function for the first round
    int rc = argon2id_hash_raw(2, 8000, 16, pwd, pwdlen, salt, saltlen, &hash, 32);
    if (rc != ARGON2_OK) {
        printf("Error: Failed to compute Argon2id hash\n");
        exit(1);
    }
   
    // Hashing the result of the first round using SHA-512 (two rounds)
    std::vector<unsigned char> salt_sha512_round2(CSHA512::OUTPUT_SIZE);
    CSHA512().Write((unsigned char*)&hash, 32).Finalize(salt_sha512_round2.data());
    CSHA512().Write(salt_sha512_round2.data(), salt_sha512_round2.size()).Finalize(salt_sha512_round2.data());
   
    // Calling the argon2id_hash_raw function for the second round
    rc = argon2id_hash_raw(2, 16000, 16, &hash, 32, salt_sha512_round2.data(), salt_sha512_round2.size(), &hash2, 32);
    if (rc != ARGON2_OK) {
        printf("Error: Failed to compute Argon2id hash for the second round\n");
        exit(1);
    }
   
    return hash2;
}