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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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