A scalable, sufficiently decentralized, chain that supported private transactions by default (privacy coins) would be a game changer.
I think like the internet, which started off HTTP and is moving HTTPS everywhere, crypto can and should move in the same direction over time. Same with messaging, end to end encryption started out fringe and is now the expected default.
You wouldnt put your credit card in a website without the lock icon for HTTPS, but we do this every time we swipe our card. Our transaction data ends up in 100 databases, waiting to be breached. Everyone having financial privacy would be a better/freer world.
Encrypted by default is a bit harder to scale but I think possible. Some are working on it https://decrypt.co/7568/radically-new-zcash-blockchain?utm_source=coinbase&utm_medium=Feed …
Right now we're in the Cambrian explosion of ideas phase for crypto, where there are 10+ great teams building next generation chains. Hopefully at some point the industry starts to consolidate a bit on one or two of these chains so we can really scale out the global solution.
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