api. all good questions.

1) The IPv6 ends at helium's routing network. So, to and from the bridge can be ipv6 or ipv4. The devices ipv6 addresses live on the helium edge routers themselves. I think on our website it's a graphic that says "platform".

2) You are close. The devices are a custom protocol (no tcp/ip or udp at the device). 802.15.4 frames.

3) replace cloud-db with a distributed system that your programs and helium's programs can subscribe to, and send and receive data to helium devices or groups of device.. You will be able to communicate to the helium network, the same way our fusion application does.