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DNS is already a decentralized database, much more efficient than a blockchain. A blockchain only works for time series data.

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I think the original (down-voted) poster meant that DNS should be decentralized to something more than 13 servers, from which any government can decide to seize a domain. A decentralized DNS system would improve free speech, and it would help with due process when it comes to the involvement of law enforcement.

There are 13 well known logical servers (~1000 physical) but they all synchronize the root zone from ICANN just as anybody can https://www.internic.net/zones/root.zone

If it's authentication of authoritative response data you're looking for then that's what https://en.wikipedia.org/wiki/Domain_Name_System_Security_Ex... is for.

you are exactly right and this is the reason that DNS will eventually move to the blockchain. As with money and bitcoin, the internet isn't truly free until this happens

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