Bitcointalk username: WillItChang
Link to the content: https://steemit.com/hdac/@willitchang/hdac-designing-iot-contract-on-the-blockchain https://medium.com/@Willitchang/hdac-designing-iot-contract-on-the-blockchain-fc5ab11e1f1b
Telegram username: Willitchang
Bitcoin address: 1uPxtF1LJpC7hmZBE2DuFAU2fRta3mZXs


Bitcointalk username: WillItChang
Link to the content: https://steemit.com/blockchain/@willitchang/how-to-secure-the-internet-of-things https://medium.com/@Willitchang/how-to-secure-the-internet-of-things-ae8233d29ec6
Telegram username: Willitchang
Bitcoin address: 1uPxtF1LJpC7hmZBE2DuFAU2fRta3mZXs