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Blockchain technologies can be used as a tool of digital transformation in cases where a validated and immutable record of transactions and operations is required. Blockchain technologies are based on distributed networks of servers where all transactions are recorded. These networks can be public, where the recording of transactions is open to all, usually for a fee, or permissioned, where the recording of transactions is done by specific participants. In the case of controlled blockchains, their creation, hosting, and maintenance will be supported by the public entities that will participate in them.

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