Private Blockchain

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Private lockchain allow only selected entry of verified participants, like those for a private business, one can opt for a private blockchain implementation. A participant can join such a private network only through an authentic and verified invitation, and a validation is necessary either by the network operator(s) or by a clearly defined set protocol implemented by the network.1) “Public, Private, Permissioned Blockchains Compared”, Shobhit Seth, Investopedia, 10 April 2018, https://www.investopedia.com/news/public-private-permissioned-blockchains-compared/