NASDAQ is indeed using Bitcoin's blockchain, via a colored-coins implementation called the Open Assets Protocol [0]. If you have a good reason to use a public,

NASDAQ is indeed using Bitcoin's blockchain, via a colored-coins implementation called the Open Assets Protocol [0]. If you have a good reason to use a public, decentralized, open-access, append-only ledger, then you very probably want to use Bitcoin's blockchain. Roll-your-own blockchains make very little sense, as yours will be much less secure than Bitcoin's without massive investments—investments which would give you still better security if they were directed at Bitcoin's blockchain instead. On the other hand, if you don't want a public, decentralized, open-access, append-only ledger, then you should probably just use Postgres. Like DTC already does. 0. https://github.com/OpenAssets/open-assets-protocol https://github.com/OpenAssets/open-assets-protocol