04.05.2022.
In general, blockchains can be permissionless, permissioned or both. This classification is based on the blockchain’s access policies and rights management. To join a permissionless blockchain, you do not need permission. In other words, permissionless blockchains enable anybody to join the blockchain anonymously and do not limit the privileges of the nodes on the network. A permissioned blockchain, on the other hand, requires permission from a central authority to join.
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