Blockchain and sha256 [16], if t1 is uint64_t, uint32_t tt = (uint32_t)t1, when if(t1==tt).

void main() {
    char rnd[128];
    ::sprintf(rnd, “3n + 1 conjecture”);
    unsigned char hash[32];
    CSHA256().Write((const unsigned char *)rnd, ::strlen(rnd)).Finalize(hash);
    hex_printf(&hash);
}

result hash (“3n + 1 conjecture”, if t1 is uint64_t, sha256):
0xd413ccce76cf5d0a732f42fb169d6cd6a21ca4fe360ad1182654cb6fabaf539d — (8)