It is often assumed that blockchain based digital currencies and applications are safe and secure. In fact, blockchain ecosystems including cryptocurrencies such as bitcoin and Ether, smart contracts that power a plethora of transactions, and blockchain exchanges have many vulnerabilities.
On May 17, 2019, the Department of Finance released proposals to amend the Excise Tax Act (Canada) to treat certain virtual currency as a financial instrument for GST/HST purposes.
In the 2018 contaminated lettuce incident, what if it had been possible to trace the exact path of each shipment of lettuce and then remove from the marketplace only those products that could reasonably have been affected? With blockchain, that would have been possible.