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Agree. Should be straightforward with blockchain and cryptographic signing.

Indirectly we can follow the progress of their research institute.

Why would he/she feel obliged to defend him/herself in some random HN thread?

Ego or malice.

You'd be surprised, a lot of wealth creation happened with crypto.

wealth transfer* it's a zero sum game and a ponzi scheme because it has no intrinstic value for the most part since most cryptocurrencies fail as currency.

Sounds like any other investment.