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it does not use a blockchain.
it does not require the use of bitcoin or any other "digital asset".
though if you mean, you cannot revoke publication of a signed event, this is true.
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:) what i meant is that it uses cryptographic signing keys.
sorry i was sleepy.
i far prefer the internet model of security through obscurity.
ssl and all that was a mistake, imho.
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positive: it does something useful
negative: it's forever blockchain, and is used for bad, or for the feds somehow.