Does anyone have experience of using Bitmark, either as a customer or as manufacturer? It seems to be a public ledger for individual units of a product for hand

Does anyone have experience of using Bitmark, either as a customer or as manufacturer? It seems to be a public ledger for individual units of a product for handling warranty and returns. Andrew Huang, who is involved, describes the system and some of the scams they are trying to mitigate: https://www.bunniestudios.com/blog/?p=4981 https://www.bunniestudios.com/blog/?p=4981 I'm curious about people's experience in practice. I would think this unlikely to help but Huang is smart and has lot of relevant experience. Bitmark's javascript laden and (to me) slightly off putting site is at: https://bitmark.com/ https://bitmark.com/