> these [blockchain issued] tokens are not simply "certificates of ownership"; they can be pre-programmed to behave in a certain way (for example, pay a dividen

> these [blockchain issued] tokens are not simply "certificates of ownership"; they can be pre-programmed to behave in a certain way (for example, pay a dividend each time a predefined event happens) For this to happen the blockchain gotta have a way to sync with events in the physical world. Moreover, all active blockchain nodes should have equal access to this data and get equal result at given time. This mechanism cannot be enforced by blockchain itself, so we are back to the issue of trust.