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So can a blockchain can be shutdown by shutting down power supply across the globe? What would happen in such a case? If the world's power supply was suddenly cut off, then everything electronic would stop working. The blockchain would be 'frozen', each node would retain its local copy, but be unable to communicate with other nodes, and miners would be ...


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I maybe wrong but what I think is Blockchain ledger exists as long as there are active nodes in the network. So can a blockchain can be shutdown by shutting down power supply across the globe? What would happen in such a case? If all the existing power supply suddenly and by magic shut down the ledger would be simply frozen but it would not disappear, it ...


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Welcome! I think one important thing to keep in mind is that even under normal circumstances the nodes are not necessarily all "synchronized." In fact overcoming this lack of instantaneous synchronization yet still ensuring eventual agreement on a single history is one of the amazing feats of bitcoin's protocol. In other words, at any given time node A on ...


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Bitcoin is a gossip network and relays transaction or blocks on a best effort basis. Hence you cannot determine the probability of one transaction being seen by the network versus the other. Now in terms of mining the transactions in a block there are a couple of cases that needs to be considered. For assumption sake let us assume that we are considering a ...


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Nodes that participate in the Bitcoin network run a computer program such as this one: https://github.com/bitcoin/bitcoin, which dictates how everything works. To answer your more specific questions: Yes, bitcoin once used UPnP, here are some more details: https://dirkmittler.homeip.net/blog/archives/3340 but in modern versions it does not (thanks for ...


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