I’ve been to a couple of Blockchain talks, The first was at Tech Wednesday; the most recent at JS Brum. @DaveDev and I discussed our serious concerns about the energy requirements of Blockchain. On LinkedIn, Dave MacDonald, ‘Deep Learning researcher, neural network architecture, founder of Toronto AI’ said:
“Blockchain is obsolete - the Tangle (directed acyclic graph) is the future. No miners (i.e. eco-friendly), it scales automatically (unlike blockchain’s fixed scaling limits), and no transaction fees.” It comes from the IOT domain. Dave MacDonald knows TensorFlow.
If you were thinking of putting time into learning about Blockchains, I think you might like to check the Tangle out too https://iota.org/IOTA_Whitepaper.pdf
I haven’t read it all but it appears to be targeting @sil’s concern that the cost of making a micro-payment transaction must not be as high as the transaction itself.