bitcoin currency and block technology was invented , if block technology universal in the world , we need a based on block search engine it ? google web-based search technology will be out of date it?
The search engine Google is still the best in the world and there is no reason to believe that it will die in the future as obsolete compared to the capabilities of blockchein technology. If you need to, Google will just go to its use and will continue to work. Just not everywhere, blockchein technology can be applied.