I could not find the answer by web search. People usually interested in economic differences. I guess it is a question for those who know how mining algorithms works.
Internet is kind of decentralized. But there is single domain servers grid that tells where to find google.com. In a world of cryptos, how do wallets know where to send your BTC / BTC cash transaction? How to differentiate between forks? Is there some list of agreed gateways like for TOR? If so who administers it?