[wpskidd]

There are actually several outfits explicitly dedicated to trading equities (and even mortgages) on blockchain. One of the most advanced is Polymath.io.

The implementation is true blockchain it just isn’t completely decentralized blockchain like bitcoin. Instead, trust authorities would establish client accounts after due diligence and KYC and AML requirements had been met. Then those accounts would leverage blockchain to facilitate transactions on a transparent and indelible ledger.