Sprout:

The seed blockchain demo

Click the chatbot bubble in the lower right of the browser window to launch Sprout. When you answer Sprout’s questions it triggers specific license calls to the transaction log. Note: there is a potential delay of several minutes between calls and when they’re batch-updated. This reduces processing fees and any attempts to game the economy.
 
There are three licenses in our system: per-use, free and monthly. No personal information is ever being written to the blockchain.