Question: ( Last Word ) Blockchain technology has a certification system that is almost perfectly secure against tampering. can be used to keep track of property

(Last Word) Blockchain technology
has a certification system that is almost perfectly secure against tampering.
can be used to keep track of property rights, including ownership of digital currency.
has a consensus mechanism requiring any update to the blockchain has to be agreed upon by a majority of users.
all of the above.

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