"What else ticks me off about this, is that there is absolutely nothing wrong with issuing stock in your company as tokens on a block chain instead of through brokers on a standard exchange. Just do it legally, for Pete's sake! Go to the SEC, or whoever the appropriate regulatory authority in your jurisdiction is, and get authorization to issue stock! Hire somebody to implement shareholder voting as block chain trans…
I can't imagine blockchains ever satisfying all legal requirements. At some point I expect some court to say "X shares were illegally transferred from person A, give them back". If we don't know where they went, it's impossible on block-chain to give them back, unless we assume the existence of someone who has the rights to make arbitrary changes, at which point there is no point having a blockchain.
Can that be abused? Yes. But all such abuse will be evident in the public record, and then the usual legal system can easily get involved -- which it already did anyway, if you're doing a proper IPO just with stocks tracked on a "block chain".