Proof of work
content bounty
Videos:
1)https://youtu.be/Zbprgj9DDQg
2)https://youtu.be/Zbprgj9DDQg
3) https://youtu.be/tBR9GlFE3vY

Articles:
1)https://steemit.com/smartcontainers/@johnybro/smart-containers-a-new-level-in-the-field-of-logistics
2)https://www.linkedin.com/pulse/smart-containers-new-level-field-logistics-ruslan-geliskhanov/

My official pages:
Steemit - https://steemit.com/@johnybro
Youtube - https://www.youtube.com/channel/UCOscRNYMvfHLbQPa078sFfA
Linkedln - https://www.linkedin.com/in/ruslan-geliskhanov-236176125/
I make content only on these 3 pages.